econometrics

Question: Which one of the following is NOT an example of mis-specification of functional form?

Choices:
- Using a linear specification when y scales as a function of the squares of x
- Using a linear specification when a double-logarithmic model would be more appropriate
- Modelling y as a function of x when in fact it scales as a function of 1/x
- Excluding a relevant variable from a linear regression model


econometrics

Question: Under the null hypothesis of a Bera-Jarque test, the distribution has

Choices:
- Zero skewness and zero kurtosis
- Zero skewness and a kurtosis of three
- Skewness of one and zero kurtosis
- Skewness of one and kurtosis of three.


econometrics

Question:
Which of the following statements are true concerning information criteria?

(i) Adjusted R-squared is an information criterion

(ii) If the residual sum of squares falls when an additional term is added, the value of the information criterion will fall

(iii) Akaike's information criterion always leads to model orders that are at least as large as those of Schwarz's information criterion

(iv) Akaike's information criterion is consistent

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question: Negative residual autocorrelation is indicated by which one of the following?

Choices:
- A cyclical pattern in the residuals
- An alternating pattern in the residuals
- A complete randomness in the residuals
- Residuals that are all close to zero


econometrics

Question: Which of the following is correct concerning logit and probit models?

Choices:
- They use a different method of transforming the model so that the probabilities lie between zero and one
- The logit model can result in too many observations falling at exactly zero or exactly one
- For the logit model, the marginal effect of a change in one of the explanatory variables is simply the estimate of the parameter attached to that variable, whereas this is not the case for the probit model
- The probit model is based on a cumulative logistic function


econometrics

Question:
Which of the following statements will be true if the number of replications used in a Monte Carlo study is small?

i) The statistic of interest may be estimated imprecisely

ii) The results may be affected by unrepresentative combinations of random draws

iii) The standard errors on the estimated quantities may be unacceptably large

iv) Variance reduction techniques can be used to reduce the standard errors

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iv) only
- (i), (ii), (iii), and (iv)


econometrics

Question:
Which of the following are plausible approaches to dealing with a model that exhibits heteroscedasticity?

i) Take logarithms of each of the variables

ii) Use suitably modified standard errors

iii) Use a generalised least squares procedure

iv) Add lagged values of the variables to the regression equation.

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question: Which one of the following is NOT a plausible remedy for near multicollinearity?

Choices:
- Use principal components analysis
- Drop one of the collinear variables
- Use a longer run of data
- Take logarithms of each of the variables


econometrics

Question:
Suppose that a hypothesis test is conducted using a 5% significance level. Which of the following statements are correct?

(i) The significance level is equal to the size of the test

(ii) The significance level is equal to the power of the test

(iii) 2.5% of the total distribution will be in each tail rejection region for a 2-sided test

(iv) 5% of the total distribution will be in each tail rejection region for a 2-sided test.

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question: Which one of the following would NOT be a consequence of using non-stationary data in levels form?

Choices:
- The regression $R^2$ may be spuriously high
- Test statistics may not follow standard distributions
- Statistical inferences may be invalid
- Parameter estimates may be biased


econometrics

Question: Suppose that we wished to evaluate the factors that affected the probability that an investor would choose an equity fund rather than a bond fund or a cash investment. Which class of model would be most appropriate?

Choices:
- A logit model
- A multinomial logit
- A tobit model
- An ordered logit model


econometrics

Question: Which one of the following is a disadvantage of the general to specific or "LSE" ("Hendry") approach to building econometric models, relative to the specific to general approach?

Choices:
- Some variables may be excluded at the first stage leading to coefficient biases
- The final model may lack theoretical interpretation
- The final model may be statistically inadequate
- If the initial model is mis-specified, all subsequent steps will be invalid.


econometrics

Question: If an estimator is said to be consistent, it is implied that

Choices:
- On average, the estimated coefficient values will equal the true values
- The OLS estimator is unbiased and no other unbiased estimator has a smaller variance
- The estimates will converge upon the true values as the sample size increases
- The coefficient estimates will be as close to their true values as possible for small and large samples.


econometrics

Question:
The characteristic roots of the MA process

$y_t = -3u_{t-1} + u_{t-2} + u_t$

are

Choices:
- 1 and 2
- 1 and 0.5
- 2 and -0.5
- 1 and -3


econometrics

Question: What are the dimensions of $\hat{u}^t \hat{u}?

Choices:
- T x k
- T x 1
- k x 1
- 1 x 1


econometrics

Question: The residual from a standard regression model is defined as

Choices:
- The difference between the actual value, y, and the mean, y-bar
- The difference between the fitted value, y-hat, and the mean, y-bar
- The difference between the actual value, y, and the fitted value, y-hat
- The square of the difference between the fitted value, y-hat, and the mean, y-bar


econometrics

Question: Which of the following statements is true concerning the population regression function (PRF) and sample regression function (SRF)?

Choices:
- The PRF is the estimated model
- The PRF is used to infer likely values of the SRF
- Whether the model is good can be determined by comparing the SRF and the PRF
- The PRF is a description of the process thought to be generating the data.


econometrics

Question: Which of the following is a disadvantage of the fixed effects approach to estimating a panel model?

Choices:
- The model is likely to be technical to estimate
- The approach may not be valid if the composite error term is correlated with one or more of the explanatory variables
- The number of parameters to estimate may be large, resulting in a loss of degrees of freedom
- The fixed effects approach can only capture cross-sectional heterogeneity and not temporal variation in the dependent variable.


econometrics

Question:
Which of the following are advantages of the use of panel data over pure cross-sectional or pure time-series modelling?

(i) The use of panel data can increase the number of degrees of freedom and therefore the power of tests

(ii) The use of panel data allows the average value of the dependent variable to vary either cross-sectionally or over time or both

(iii) The use of panel data enables the researcher allows the estimated relationship between the independent and dependent variables to vary either cross-sectionally or over time or both

Choices:
- (i) only
- (i) and (ii) only
- (ii) only
- (i), (ii), and (iii)


econometrics

Question:
A white noise process will have

(i) A zero mean

(ii) A constant variance

(iii) Autocovariances that are constant

(iv) Autocovariances that are zero except at lag zero

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question:
If OLS is used in the presence of autocorrelation, which of the following will be likely consequences?

i) Coefficient estimates may be misleading

ii) Hypothesis tests could reach the wrong conclusions

iii) Forecasts made from the model could be biased

iv) Standard errors may inappropriate

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question: Which of the following is a typical characteristic of financial asset return time-series?

Choices:
- Their distributions are thin-tailed
- They are not weakly stationary
- They are highly autocorrelated
- They have no trend


econometrics

Question:
Which of the following are disadvantages of the Dickey-Fuller / Engle-Granger approach to testing for cointegration and modelling cointegrating relationships?

i) Only one cointegrating relationship can be estimated

ii) Particularly for small samples. There is a high chance of the tests suggestingthat variables are not cointegrated when they are

iii) It is not possible to make inferences on the cointegrating regression

iv) The procedure forces the researcher to specify which is the dependent variable and which are the independent variables.

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question: The "within transform" involves

Choices:
- Taking the average values of the variables
- Subtracting the mean of each entity away from each observation on that entity
- Estimating a panel data model using least squares dummy variables
- Using both time dummies and cross-sectional dummies in a fixed effects panel model


econometrics

Question: Consider the estimation of a GARCH-M model. If the data employed were a time-series of daily corporate bond percentage returns, which of the following would you expect the value of the GARCH-in-mean parameter estimate to be?

Choices:
- Less than -1
- Between -1 and 0
- Between 0 and 1
- Bigger than 1


econometrics

Question: Consider again the VAR model of equation 16. Which of the following conditions must hold for it to be said that there is bi-directional feedback?

Choices:
- The b and d coefficients significant and the a and c coefficients insignificant
- The a and c coefficients significant and the b and d coefficients insignificant
- The a and c coefficients significant
- The b and d coefficients significant


econometrics

Question: Which of the following is a DISADVANTAGE of using pure time-series models (relative to structural models)?

Choices:
- They are not theoretically motivated
- They cannot produce forecasts easily
- They cannot be used for very high frequency data
- It is difficult to determine the appropriate explanatory variables for use in pure time-series models


econometrics

Question:
Consider the OLS estimator for the standard error of the slope coefficient. Which of the following statement(s) is (are) true?

(i) The standard error will be positively related to the residual variance

(ii) The standard error will be negatively related to the dispersion of the observations on the explanatory variable about their mean value

(iii) The standard error will be negatively related to the sample size

(iv) The standard error gives a measure of the precision of the coefficient estimate.

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question: If a series, y, follows a random walk, what is the optimal one-step ahead forecast of y?

Choices:
- The current value of y
- Zero
- One
- The average value of y over the in-sample period


econometrics

Question:
Which of the following statements are true concerning the standardised residuals (residuals divided by their respective conditional standard deviations) from an estimated GARCH model?

i) They are assumed to be normally distributed

ii) Their squares will be related to their lagged squared values if the GARCH model is

appropriate

iii) In practice, they are likely to have fat tails

iv) If the GARCH model is adequate, the standardised residuals and the raw residuals

will be identical

Choices:
- (ii) and (iv) only
- (i) and (iii) only
- (i), (ii), and (iii) only
- (i), (ii), (iii), and (iv)


econometrics

Question: Which one of the following is the most appropriate definition of a 99% confidence interval?

Choices:
- 99% of the time in repeated samples, the interval would contain the true value of the parameter
- 99% of the time in repeated samples, the interval would contain the estimated value of the parameter
- 99% of the time in repeated samples, the null hypothesis will be rejected
- 99% of the time in repeated samples, the null hypothesis will not be rejected when it was false


electrical_engineering

Question: Which lamp has the best Colour Rendering Index (CRI)?

Choices:
- LED
- Fluorescent
- Incandescent
- High pressure sodium vapour


electrical_engineering

Question: The number of output pins in 8085 microprocessors are

Choices:
- 27.
- 40.
- 21.
- 19.


electrical_engineering

Question: In 8085 name/names of the 16 bit registers is/are

Choices:
- stack pointer.
- program counter.
- both A and B.
- none of these.


electrical_engineering

Question: A microprocessor is ALU

Choices:
- and control unit on a single chip.
- and memory on a single chip.
- register unit and I/O device on a single chip.
- register unit and control unit on a single chip.


electrical_engineering

Question: ________ is the most detrimental impurity in the magnetic materials

Choices:
- Carbon.
- Sulphur.
- Oxygen.
- Nitrogen.


electrical_engineering

Question: A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is

Choices:
- 40Ï coulombs.
- 80Ï coulombs.
- 10Ï coulombs.
- none of these.


electrical_engineering

Question: If P is the power of a star connected system then what will be power of an equivalent delta connected system?

Choices:
- P
- 3P
- P/3
- None of the above


electrical_engineering

Question: Which of the following is a variable displacement transducer?

Choices:
- tachometer
- potentiometer
- synchros
- none of the above


electrical_engineering

Question: 1 F is theoretically equal to

Choices:
- 1 ohm of resistance
- ratio of 1 V to 1 C
- ratio of 1 C to 1 V
- none of these


electrical_engineering

Question: Which system is also known as automatic control system?

Choices:
- Open loop control system
- Closed loop control system
- Either A or B
- Nether A nor B


electrical_engineering

Question: The normal voltage used in directional heating is

Choices:
- 1.5 KV.
- 15 KV.
- 33 KV.
- 66 KV.


electrical_engineering

Question: A step up chopper has input voltage 110 V and output voltage 150 V. The value of duty cycle is

Choices:
- 0.32.
- 0.67.
- 0.45.
- 0.27.


electrical_engineering

Question: A Lissajous pattern on an oscilloscope has 5 horinzontal tangencies and 2 vertical tangencies. The frequency of horizontal input is 100 Hz. The frequency of the vertical will be

Choices:
- 500 Hz.
- 250 Hz.
- 400 Hz.
- 625 Hz.


electrical_engineering

Question: If a Hexadecimal number needs to convert to binary. For each hexadecimal digit, there will be how many bits

Choices:
- 1
- 2
- 4
- 8


electrical_engineering

Question: Stability of a transmission line can be increased by

Choices:
- shunt capacitor
- series capacitor
- shunt reactor
- both A and B


electrical_engineering

Question: The solid angle subtended by an area of 2400 cm^2 on the surface of a sphere of diameter 1.2 m is

Choices:
- 3 / 2.
- 1 / 3.
- 2 / 3.
- 2 / 5.


electrical_engineering

Question: Which of the following is not a sinusoidal oscillator?

Choices:
- LC oscillator
- RC phase shift oscillator
- Relaxation oscillator
- Crystal oscillator


electrical_engineering

Question: The feedback factor of a Wien bridge oscillator using Op-Amp is

Choices:
- 1/3
- 1/4
- 1/2
- 1


electrical_engineering

Question: Commutator in DC generator is used for

Choices:
- collecting of current
- reduce losses
- increase efficiency
- convert AC armature current in to DC


electrical_engineering

Question: In a lap winding dc machine number of conductors are 100 and number of parallel paths are 10. Find the average pitch

Choices:
- 10
- 100
- 50
- 1


electrical_engineering

Question: The errors mainly caused by human mistakes are

Choices:
- gross error.
- instrumental error.
- observational error.
- systematic error.


electrical_engineering

Question: The ROM programmed during manufacturing process itself is called

Choices:
- MROM
- PROM
- EPROM
- EEPROM


electrical_engineering

Question: FM stands for

Choices:
- frequent modulation.
- frequency modulation.
- frequency moderator.
- frequent moderator.


electrical_engineering

Question: Thin laminations are used in a machine in order to reduce

Choices:
- Eddy current losses
- Hysteresis losses
- Both A and B
- Copper losses


electrical_engineering

Question: Speed control by variation of field flux results in

Choices:
- constant power drive.
- constant torque drive.
- variable power drive.
- none of the above.


electrical_engineering

Question: Four capacitors each of 40 ÂµF are connected in parallel, the equivalent capacitance of the system will be

Choices:
- 160 ÂµF
- 10 ÂµF
- 40 ÂµF
- 5 ÂµF


electrical_engineering

Question: In a dc machine 6 pole wave winding is used. The number of parallel paths are?

Choices:
- 6
- 4
- 2
- 1


electrical_engineering

Question: The output of the system has an effect upon the input quantity, then the system is a

Choices:
- open loop control system.
- closed loop control system.
- either A or B.
- none of the above.


electrical_engineering

Question: Induction heating takes place in

Choices:
- conducting but non-magnetic materials.
- conducting materials which may be either magnetic or non-magentic materials.
- insulating materials.
- conducting and magnetic materials.


electrical_engineering

Question: The number of rings in the Bohr model of any element is determined by what?

Choices:
- Column number on periodic table.
- Atomic mass.
- Row number on periodic table.
- Atomic number.


electrical_engineering

Question: Both the ALU and control section of CPU employ which special purpose storage location?

Choices:
- Buffers
- Decoders
- Accumulators
- Registers


electrical_engineering

Question: In balanced bridge, if the positions of detector and source are interchanged, the bridge will still remain balanced. This can be explained from which theorem

Choices:
- Reciprocity theorem
- Thevinin's theorem
- Norton's theorem
- Compensation theorem


electrical_engineering

Question: Susceptibility is negative for

Choices:
- non magnetic substances.
- diamagnetic substances.
- ferromagnetic substances.
- none of above.


electrical_engineering

Question: Which of the following is the analogous quantity for mass element in force-voltage analogy?

Choices:
- Resistance.
- Inductance.
- Capacitance.
- All of the above.


electrical_engineering

Question: The resistance of a conductor of diameter d and length l is R Î©. If the diameter of the conductor is halved and its length is doubled, the resistance will be

Choices:
- R Î©
- 2R Î©
- 4R Î©
- 8R Î©


electrical_engineering

Question: Which of the following is/are the disadvantages of an open loop control system?

Choices:
- Inaccurate.
- Unreliable.
- both A and B.
- none of the above.


electrical_engineering

Question: By using which of the following elements, mechanical translational systems are obtained?

Choices:
- mass element
- spring element
- dash-pot
- all of the above


electrical_engineering

Question: In Digital Logic Designs, GAL is abbreviated as

Choices:
- General Advance Logic
- General Array Logic
- Generic Advance Logic
- Generic Array Logic


electrical_engineering

Question: What is used to protect the SCR from over current ?

Choices:
- CB and fuse.
- Heat sink.
- Snubber circuit.
- Voltage clamping device.


electrical_engineering

Question: Piezoelectric effect is carried out in

Choices:
- composite filter.
- crystal filter.
- m derived.
- constant k prototype.


electrical_engineering

Question: Electrical analogous quantity for dash-pot in force-current analogy is

Choices:
- resistance.
- conductance.
- inductance.
- capacitance.


electrical_engineering

Question: A D-flip-flop is said to be transparent when

Choices:
- the output is LOW
- the output is HIGH
- the output follows clock
- the output follow input


electrical_engineering

Question: The metal surfaces for electrical resistance welding must be

Choices:
- rough.
- clean.
- moistened
- coloured


electrical_engineering

Question: For intermittent work which of the following furnace is suitable?

Choices:
- Core less furnace.
- Indirect arc furnace.
- Either of above.
- Nither of above.


electrical_engineering

Question: The magnetisation and applied field in ferromagnetic materials are related

Choices:
- sinusoidally.
- non linearly.
- linearly.
- parabolically.


electrical_engineering

Question: A null type instrument as compared to a deflected type instrument has

Choices:
- a lower sensitivity.
- a faster response.
- a higher accuracy.
- all of the above.


electrical_engineering

Question: Materials used in heat sink should have

Choices:
- high thermal conductivity.
- large surface area.
- high melting point.
- All of these.


electrical_engineering

Question: In two wattmeter method of power measurement if the total power is measured by one wattmeter only then power factor of the system is

Choices:
- 0.
- 0.5.
- 1.
- none of above.


electrical_engineering

Question: The moving coil-meters, damping is provided by

Choices:
- the aluminium frame of the coil.
- the coil spring attached to the moving.
- eddy current disk.
- damping vane in the airtight chamber.


electrical_engineering

Question: Colpitts oscillator is also called as

Choices:
- Tank circuit oscillator
- LC oscillator
- Resonant circuit oscillator
- All of the above


electrical_engineering

Question: Temperature variation is a/an

Choices:
- Digital quantity
- Analog quantity
- Either Digital or Analog quantity
- None


electrical_engineering

Question: What are the sets of commands in a program which are not translated into machine instructions during assembly process, called?

Choices:
- Mnemonics
- Directives
- Identifiers
- Operands


electrical_engineering

Question: The supply frequency usually employed for high frequency eddy current heating is

Choices:
- 1 KHz.
- 5 KHz.
- 10 MHz.
- 10 KHz to 400 KHz.


electrical_engineering

Question: Lowest critical frequency is due to zero and it may be present at the origin or nearer to the origin, then the type of network is

Choices:
- LC circuit.
- RC circuit.
- RLC circuit.
- RL Circuit.


electrical_engineering

Question: In the toggle mode a JK flip-flop has

Choices:
- J = 0, K = 0.
- J = 1, K = 1.
- J = 0, K = 1.
- J = 1, K = 0.


electrical_engineering

Question: A latch is ________ sensitive

Choices:
- both level and edge
- edge
- level
- None


electrical_engineering

Question: Purely mechanical instrument cannot be used for dynamic measurements because they have

Choices:
- high inertia.
- higher response time.
- large time constant.
- all of the above.


electrical_engineering

Question: Which of the following is used in SCR to protect from high dV / dt?

Choices:
- Snubber circuit.
- Fuse.
- Equalizing circuit.
- Circuit breaker.


electrical_engineering

Question: If holding current of a thyristor is 2 mA then latching current should be

Choices:
- 0.01 A.
- 0.002 A.
- 0.009 A.
- 0.004 A.


electrical_engineering

Question: Potentiometer method of DC voltage measurement is more accurate than direct measurement using a voltmeter because

Choices:
- It loads the circuit moderately.
- It loads the circuit to maximum extent.
- It uses centre zero galvanometer instead of voltmeter.
- It does not load the circuit at all.


electrical_engineering

Question: A single phase one pulse controlled circuit has a resistance R and counter emf E load 400 sin(314 t) as the source voltage. For a load counter emf of 200 V, the range of firing angle control is

Choices:
- 30Â° to 150Â°.
- 30Â° to 180Â°.
- 60Â° to 120Â°.
- 60Â° to 180Â°.


electrical_engineering

Question: Stack is also known as

Choices:
- FIFO memory
- Flash memory
- LIFO memory
- LILO memory


electrical_engineering

Question: Power dissipation in ideal inductor is

Choices:
- Maximum
- Minimum
- Zero
- A finite value


electrical_engineering

Question: A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exists between the conductor and the ground. The maximum electric stress occurs at

Choices:
- lower surface of the conductor.
- upper surface of the conductor.
- the ground surface.
- midway between the conductor and ground.


electrical_engineering

Question: Poles and zeros are arranged alternatively on negative real axis, then type of network is/are

Choices:
- LC network.
- RC network.
- RL network.
- Both 2 and 3.


electrical_engineering

Question: The main advantage of dielectric heating is that

Choices:
- heating occurs in the material itself.
- heating occurs due to high frequency.
- it can be used for drying the explosives.
- None of the above.


electrical_engineering

Question: Five capacitors each of 5 ÂµF are connected in series, the equivalent capacitance of the system will be

Choices:
- 5 ÂµF
- 25 ÂµF
- 10 ÂµF
- 1 ÂµF


electrical_engineering

Question: Magnetic flux has the unit of

Choices:
- Newton
- Ampere turn
- Weber
- Tesla


electrical_engineering

Question: Deflection method direct measurements are most widely used as these are

Choices:
- least time consuming.
- most simple.
- most simple and least time consuming.
- most accurate.


electrical_engineering

Question: In Ward-Leonard system, the lower limit of the speed imposed by

Choices:
- Field resistance.
- Armature resistance.
- Residual magnetism of the generator.
- None of above.


electrical_engineering

Question: Electrical analogous quantity for spring element (K) in force-voltage analogy is

Choices:
- L
- R
- 1/C
- C


electrical_engineering

Question: Electrons in p-type material of a semi-conductor are called as

Choices:
- either minority carriers or majority carriers
- minority carriers
- majority carriers
- valance carriers


electrical_engineering

Question: Advantages of open loop control system is/are

Choices:
- simple and economical.
- accurate.
- reliable.
- all of the above.


electrical_engineering

Question: Which oscillators are easy to fabricate in a monolithic IC?

Choices:
- Crystal oscillator.
- Hartley oscillator.
- Wien bridge oscillator.
- Relaxation oscillator.


electrical_engineering

Question: The energy stored in the magnetic field in a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current at 10 amp, is

Choices:
- 0.015 joule.
- 0.15 joule.
- 0.015 joule.
- 1.15 joule.


electrical_engineering

Question: A Binary number system has how many digits.

Choices:
- 0
- 1
- 2
- 10


electrical_engineering

Question: According to the Bohr model, an electron gains or losses energy only by

Choices:
- moving faster or slower in an allowed orbit.
- jumping from one allowed orbit to another.
- being completely removed from an atom.
- jumping from one atom to another atom.


electrical_engineering

Question: Inintel 8085A microprocessor ALE signal is made high to

Choices:
- Enable the data bus to be used as low order address bus
- To latch data D0-D7 from data bus
- To disable data bus
- To achieve all the functions listed above


electrical_engineering

Question: A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage

Choices:
- 3.33 %.
- 2.66 %.
- 2 %.
- 1 %.


electrical_engineering

Question: Relative error is same as

Choices:
- ratio of absolute error and true value.
- absolute error.
- true error.
- none of the above.


electrical_engineering

Question: Systematic errors are

Choices:
- environmental errors.
- observational errors.
- instrument errors.
- all of the above.


electrical_engineering

Question: In an intel 8085A, which is the first machine cycle of an instruction?

Choices:
- An op-code fetch cycle
- A memory read cycle
- A memory write cycle
- An I/O read cycle


electrical_engineering

Question: Which of the following is a digital device

Choices:
- Regulator of a fan
- Microphone
- Resistance of a material
- Light switch


electrical_engineering

Question: An SCR has half cycle surge current rating of 3000 A for 50 Hz supply. One cycle surge current will be

Choices:
- 1500 A.
- 6000 A.
- 2121.32 A.
- 4242.64 A.


electrical_engineering

Question: Electric drive is becoming more and more popular because

Choices:
- all of below.
- it provide smooth and easy control.
- it is cheaper in cost.
- it is simple and reliable.


electrical_engineering

Question: Instantaneous power in inductor is proportional to the

Choices:
- product of the instantaneous current and rate of change of current.
- square of instantaneous current.
- square of the rate of change of current.
- temperature of the inductor.


electrical_engineering

Question: Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is

Choices:
- same as that produced by one plate.
- double the field produced by one plate.
- dependent on coordinates of field points.
- zero.


electrical_engineering

Question: If all the elements in a particular network are linear, then the superposition theorem would hold, when the excitation is

Choices:
- DC only
- AC only
- Either AC or DC
- An Impulse


electrical_engineering

Question: A combinational PLD with a fixed AND array and a programmable OR array is called a

Choices:
- PLD
- PROM
- PAL
- PLA


electrical_engineering

Question: Silicon and Germanium are ________ elements.

Choices:
- trivalant
- pentavalant
- hexavalant
- tetravalant


electrical_engineering

Question: The resistance in the circuit of the moving coil of a dynamometer wattmeter should be

Choices:
- Low.
- Very low.
- High.
- Almost zero.


electrical_engineering

Question: The change of cross sectional area of conductor in magnetic field will affect

Choices:
- reluctance of conductor.
- resistance of conductor.
- (A) and (B) both in the same way.
- none of above.


electrical_engineering

Question: The illumination at a point 5 meters below a lamp in 6 lux. The candle power of the lamp is

Choices:
- 30
- 140.
- 150.
- 200.


electrical_engineering

Question: Which of the followings is/are active element?

Choices:
- Voltage source
- Current source
- Both
- None of these.


electrical_engineering

Question: How many bits are required to store one BCD digit ?

Choices:
- 1
- 2
- 3
- 4


electrical_engineering

Question: Feedback circuit in an oscillator can be accomplished by

Choices:
- Resistive coupling between input and output
- Capacitive coupling between input and output
- Inductive coupling between input and output
- Any one or combinations of the above methods


electrical_engineering

Question: Advantages of higher transmission voltage is/are

Choices:
- Power transfer capability of the transmission line is increased
- Transmission line losses are reduced
- Area of cross section and volume of the conductor is reduced
- all of the above


electrical_engineering

Question: Snubber circuit is used with SCR

Choices:
- in series.
- in parallel.
- either series or parallel.
- anti parallel.


electrical_engineering

Question: Which of the following are the passive elements?

Choices:
- Resistor
- Bulb
- Both
- None of these.


electrical_engineering

Question: To obtain a high value of capacitance, the permittivity of dielectric medium should be

Choices:
- low
- zero
- high
- unity


formal_logic

Question: Select the best translation into predicate logic: Ms. Jackson lent me some sugar, but neither Janet nor Latoya did.

Choices:
- Lm â¨ ~(Jl â¨ Ll)
- Lm â¢ ~(Lj â¢ Ll)
- Lm â¢ ~(Lj â¨ Ll)
- Lm â¨ ~(Lj â¢ Ll)


formal_logic

Question: Identify the antecedent of the following conditional proposition: When the university raises tuition, then either the governor approves of it or the board of trustees doesn't prevent it.

Choices:
- The university raises tuition.
- The governor approves of it.
- The board of trustees prevents it.
- The board of trustees doesn't prevent it.


formal_logic

Question:
 Use the following key to translate the given formula of PL to natural, English sentences.
A: Marina reads a Percy Jackson book.
B: Izzy plays Minecraft.
C: Emily stops working.
D: Russell makes dinner.
E: Ashleigh stops by.
~(A â B) â¢ (B â ~E)

Choices:
- It's not the case that Marina's reading a Percy Jackson book entails that Izzy plays Minecraft, but Izzy's playing Minecraft does entail that Ashleigh doesn't stop by.
- If Marina doesn't read a Percy Jackson book, then Izzy plays Minecraft, which entails that Ashleigh doesn't stop by.
- Marina's reading a Percy Jackson book does not entail that Izzy plays Minecraft, but Izzy plays Minecraft provided that Ashleigh doesn't stop by.
- It's not true that Marina reads a Percy Jackson book only when Izzy plays Minecraft, but Izzy plays Minecraft only when Ashleigh stops by.


formal_logic

Question:
 Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
T â¨ U
W Â· T / U

Choices:
- Valid
- Invalid. Counterexample when T and W are true and U is false
- Invalid. Counterexample when T is true and W and U are false
- Invalid. Counterexample when W is true and T and U are false


formal_logic

Question:
 Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?
A â (B â¢ C)
~(B â¢ C)
A â¨ (D â¨ B)

Choices:
- A
- ~A
- B
- ~B


formal_logic

Question: Select the best translation into predicate logic. Earth isn't bigger than Jupiter. (e: Earth; j: Jupiter; Bxy: x is bigger than y)

Choices:
- ~Bje
- Bej
- Bje~
- ~Bej


formal_logic

Question:
 Construct a complete truth table for the following pairs of propositions. Then, using the truth tables, determine whether the statements are logically equivalent or contradictory. If neither, determine whether they are consistent or inconsistent. Justify your answers.
(G â¨ ~H) â G and ~G â¡ (~H Â· G)

Choices:
- Logically equivalent
- Contradictory
- Neither logically equivalent nor contradictory, but consistent
- Inconsistent


formal_logic

Question:
Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
~(M â¡ ~N)
M / N

Choices:
- Valid
- Invalid. Counterexample when M and N are true
- Invalid. Counterexample when M is true and N is false
- Invalid. Counterexample when N is true and M is false


formal_logic

Question:
Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
E â F
G â ~F / ~G â¨ ~E

Choices:
- Valid
- Invalid. Counterexample when E, F, and G are true
- Invalid. Counterexample when E and G are true and F is false
- Invalid. Counterexample when F and G are true and E is false


formal_logic

Question:
 Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
(G â¡ H) Â· ~I
~G â¨ (~H â¨ I) / G

Choices:
- Valid
- Invalid. Counterexample when H and I are true and G is false
- Invalid. Counterexample when H is true and I and G are false
- Invalid. Counterexample when H, I, and G are false


formal_logic

Question: Select the best translation into predicate logic. David teaches Chris. (c: Chris; d: David; Txy: x teaches y)

Choices:
- Tdc
- Tcd
- Tcc
- dTc


formal_logic

Question: Identify the conclusion of the following argument. That the world is my idea is a truth valid for every living creature, though only man can contemplate it. In doing so, he attains philosophical wisdom. No truth is more absolutely certain than that all that exists for knowledge and therefore this world is only object in relation to subject, perception of a perceiver. The world is an idea. (Arthur Schopenhauer, The World as Will and Idea)

Choices:
- The world is an idea.
- That the world is my idea is a truth valid for every living creature, though only man can contemplate it.
- In doing so, he attains philosophical wisdom.
- No truth is more absolutely certain than that all that exists for knowledge and therefore this world is only object in relation to subject, perception of a perceiver.


formal_logic

Question: Select the best translation into predicate logic: Leroy is bad only if DJ Khaled shouts his name.

Choices:
- Sk â¡ Bl
- Bl â¡ Sk
- Bx â Sy
- Bl â Sk


formal_logic

Question: Select the best translation into predicate logic. Holly loves Frances. (f: Frances; h: Holly; Lxy: x loves y)

Choices:
- hLf
- fLh
- Lfh
- Lhf


formal_logic

Question: Select the best translation into predicate logic. Some firefighters rescue victims from danger. (Dx: x is danger; Fx: x is a firefighter; Vx: x is a victim; Rxyz: x rescues y from z)

Choices:
- (âx){Fx â¢ (ây)[Dy â (âz)(Vz â¢ Rxyz)]}
- (âx){Fx â¢ (ây)[Vy â¢ (âz)(Dz â¢ Rxyz)]}
- (âx){Fx â¢ (ây)(âz)[(Vy â¢ Dz) â¢ Rxzy]}
- (âx){Fx â (ây)[Vy . (âz)(Dz â¢ Rxyz)]}


formal_logic

Question:
 Select the best English interpretation of the given arguments in predicate logic.
(âx)(Cx â¢ Ox)
(âx)[(~Cx â ~Bx) â ~Og]	/ ~Og

Choices:
- Some cookies have oatmeal. If something's not being a cookie entails that it doesn't have chocolate chips, then this cookie doesn't have oatmeal. So this cookie doesn't have oatmeal.
- Some cookies have oatmeal. If something is not a cookie and does not have chocolate chips, it doesn't have oatmeal. So this cookie doesn't have oatmeal.
- Some cookies have oatmeal. If something doesn't have oatmeal, then it is not a cookie and it doesn't have chocolate chips. So this cookie doesn't have oatmeal.
- Some cookies have oatmeal. If something's not having chocolate chips entails that it is not a cookie, then it doesn't have oatmeal. So this cookie doesn't have oatmeal.


formal_logic

Question: Select the best translation into predicate logic. All children go to some school. (Cx: x is a child; Sx: x is a school; Gxy: x goes to y)

Choices:
- (âx)(ây)[(Cx â¢ Sy) â¢ Gxy)
- (âx)[Sx â (ây)(Cy â¢ Gxy)]
- (âx)[Cx â (ây)(Sy â¢ Gxy)]
- (âx)[Sx â¢ (ây)(Cy â¢ Gxy)]


formal_logic

Question:
 Use the following key to translate the given formula of PL to natural, English sentences.
A: Marina reads a Percy Jackson book.
B: Izzy plays Minecraft.
C: Emily stops working.
D: Russell makes dinner.
E: Ashleigh stops by.
(~B â¢ E) â D

Choices:
- If it's not the case that both Izzy plays Minecraft and Ashleigh stops by then Russell makes dinner.
- If it's both not the case that Izzy plays Minecraft and Ashleigh stops by then Russell makes dinner.
- Izzy playing Minecraft and Ashleigh stopping by entails that Russell makes dinner.
- Russell's making dinner is a sufficient condition for Izzy not playing Minecraft and Ashleigh stopping by.


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
If Beth rides her bike, she gets to work earlier.

Choices:
- B â W
- W â B
- B â¡ W
- Both A and B


formal_logic

Question: Select the best translation into predicate logic:: Some blue herons migrate.

Choices:
- (âx)[(Hx â¢ Bx) â¢ Mx]
- (âx)[(Hx â¢ Bx) â Mx]
- (âx)[(Hx â¢ Bx) â Mx]
- (âx)[(Hx â¢ Bx) â¢ Mx]


formal_logic

Question:
Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
(O â¡ P) â¨ P / P â¨ ~O

Choices:
- Valid
- Invalid. Counterexample when O and P are true
- Invalid. Counterexample when O is true and P is false
- Invalid. Counterexample when P is true and O is false


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
If either George enrolls or Harry enrolls, then Ira does not enroll.

Choices:
- (G â H) â¨ I
- (G â¨ H) â I
- (G â H) â¨ ~I
- (G â¨ H) â ~I


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
Since the university raised tuition, the president approved of it and the board didn't prevent it.

Choices:
- (P â¢ ~B) â U
- (U â P) â¢ B
- U â (P â¢ ~B)
- U â (P â¨ ~B)


formal_logic

Question: Select the best translation into predicate logic. Alexis is greeted by Ben. (a: Alexis; b: Ben; Gxy: x greets y)

Choices:
- Gab
- ~Gba
- aGb
- Gba


formal_logic

Question:
 Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
J â¡ ~K
J â¨ L
~K / L

Choices:
- Valid
- Invalid. Counterexample when J and K are true and L is false
- Invalid. Counterexample when J is true and K and L are false
- Invalid. Counterexample when K is true and J and L are false


formal_logic

Question: Select the best translation into predicate logic. Leo is taller than Cathy. (c: Cathy; l: Leo; Txy: x is taller than y)

Choices:
- Tlc
- Tcl
- lTc
- cTl


formal_logic

Question: Identify the antecedent of the following conditional proposition: The university raises tuition if both the governor approves of it and the board of trustees recommends it.

Choices:
- The university raises tuition.
- The governor approves of it.
- The board of trustees recommends it.
- The governor approves of it and the board of trustees recommends it.


formal_logic

Question: Select the best translation into predicate logic: If Delilah is in New York City, then Juana is in Bogota or Layla is in San Juan.

Choices:
- Nd â (Bj â¢ Sl)
- Dn â¡ (Bx â¢ Ly)
- Nd â¡ (Bj â¢ Sl)
- Nd â (Bj â¨ Sl)


formal_logic

Question: Select the best translation into predicate logic: No senior graduates without a major.

Choices:
- (âx)(Sx â ~Gx)
- ~(âx)(Sx â Gx)
- (âx)( ~Sx â ~Gx)
- (âx) ~(Sx â ~Gx)


formal_logic

Question: Identify the antecedent of the following conditional proposition: The university raises tuition only if both the governor approves of it and the board of trustees recommends it.

Choices:
- The university raises tuition.
- The governor approves of it.
- The board of trustees recommends it.
- The governor approves of it and the board of trustees recommends it.


formal_logic

Question: S Select the best translation into predicate logic. Some kind people help some endangered species. (Ex: x is endangered; Kx: x is kind; Px: x is a person; Sx: x is a species; Hxy: x helps y)

Choices:
- (âx){(Kx â¢ Px) â¢ (ây)[(Ey â¢ Sy) â¢ Hxy]}
- (âx)(ây){[(Kx â¢ Sx) â¢ (Ey â¢ Py)] â¢ Hxy}
- (âx)(ây){[(Kx â¢ Sx) â¢ (Ey â¢ Py)] â¢ Hyx}
- (âx)(ây){[(Kx â¢ Px) â¢ (Ey â¢ Sy)] â Hxy}


formal_logic

Question: Select the best translation into predicate logic. All birds live in some nest. (Bx: x is a bird; Nx: x is a nest; Lxy: x lives in y)

Choices:
- (âx)(ây)[(Bx â¢ Ny) â Lxy]
- (âx)[Bx â (ây)(Ny â¢ Lxy)]
- (âx)[(ây)(Ny â¢ Bx) â Lxy]
- (âx)(ây)[(Bx â¢ Ny) â Lxy]


formal_logic

Question: Select the best English interpretation of the given proposition, using the following translation key: Ax: x is an apartment Hx: x is a house Lx: x is large Bxy: x is bigger than y (âx){Ax â (ây)[(Hy â¢ Ly) â â¼Bxy]}

Choices:
- All apartments are not bigger than some large house.
- No apartment is bigger than any large house.
- All large houses are not bigger than some apartment.
- No large house is bigger than all apartments.


formal_logic

Question: Select the best translation into predicate logic: Caroline is sweet if, and only if, Janet is engaged to Brad.

Choices:
- Cs â Ej
- Sc â¡ Ej
- sC â¡ eJ
- Sx â¡ Jy


formal_logic

Question: Select the best translation into predicate logic. Marco moves from Italy to Spain. (i: Italy; m: Marco; s: Spain; Mxyz: x moves to y from z)

Choices:
- Msim
- Mmis
- Mims
- Mmsi


formal_logic

Question: Identify the conclusion of the following argument. It is hard not to verify in our peers the same weakened intelligence due to emotions that we observe in our everyday patients. The arrogance of our consciousness, which in general, belongs to the strongest defense mechanisms, blocks the unconscious complexes. Because of this, it is difficult to convince people of the unconscious, and in turn to teach them what their conscious knowledge contradicts. (Sigmund Freud, The Origin and Development of Psychoanalysis)

Choices:
- It is hard not to verify in our peers the same weakened intelligence due to emotions that we observe in our everyday patients.
- The arrogance of our consciousness, which in general, belongs to the strongest defense mechanisms, blocks the unconscious complexes.
- Because of this, it is difficult to convince people of the unconscious, and in turn to teach them what their conscious knowledge contradicts.
- It is difficult to convince people of the unconscious, and in turn to teach them what their conscious knowledge contradicts.


formal_logic

Question: Select the best translation into predicate logic: All first-year students take a swim test.

Choices:
- (âx)(Sx â Fx)
- (âx)(Fx â Sx)
- (âx)(Fx â¨ Sx)
- (âx)(Fx â¡ Sx)


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
Either England's not importing beef is a necessary condition for France's subsidizing agriculture, or China promotes human rights if and only if South Africa doesn't supply diamonds.

Choices:
- (F â ~E) â¨ (C â¡ ~S)
- (~E â F) â¨ (C â ~S)
- ~(F â E) â¨ (~S â C)
- (F â E) â¨ (C â¡ ~S)


formal_logic

Question:
 Use indirect truth tables to determine whether each set of propositions is consistent. If the set is consistent, choose an option with a consistent valuation. (There may be other consistent valuations.)
A â (~B â¨ C)
C â D
A â¨ (B Â· ~D)
A â¡ (B â D)

Choices:
- Inconsistent
- Consistent. Consistent valuation when A and D are true and B and C are false
- Consistent. Consistent valuation when A, B, and D are true and C is false
- Consistent. Consistent valuation when C and D are true and A and B are false


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
Pablo will go to the store if, and only if, his brother drives him and pays for gas.

Choices:
- (P â¡ D) â¡ G
- (D â¢ G) â P
- P â (D â¢ G)
- P â¡ (D â¢ G)


formal_logic

Question:
 Construct a complete truth table for the following pairs of propositions. Then, using the truth tables, determine whether the statements are logically equivalent or contradictory. If neither, determine whether they are consistent or inconsistent. Justify your answers.
I â¡ ~H and ~(~I â¡ H)

Choices:
- Logically equivalent
- Contradictory
- Neither logically equivalent nor contradictory, but consistent
- Inconsistent


formal_logic

Question:
 Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
L â [(M â¨ ~N) â O]
(N â O) â (~P â Q)
R â ~Q / L â (R â P)

Choices:
- Valid
- Invalid. Counterexample when L, M, O, Q, and R are true and N and P are false
- Invalid. Counterexample when L, N, O, Q, and R are true and M and P are false
- Invalid. Counterexample when L, N, and R are true and M, O, P, and Q are false


formal_logic

Question: Select the best translation into predicate logic. Some CEO is wealthier than everyone. (Cx: x is a CEO; Px: x is a person; Wxy: x is wealthier than y)

Choices:
- (âx)[Cx â¢ (ây)(Py â¢ Wxy)]
- (âx)[Cx â (ây)(Py â Wxy)]
- (âx)[Cx â¢ (ây)(Py â Wxy)]
- (âx)[Px â (ây)(Cy â Wxy)]


formal_logic

Question: Select the best translation into predicate logic: Cecilia breaks my heart if, and only if, Maria is either a problem or a girl.

Choices:
- Bc â¡ (Pm â¨ Gm)
- Bc â¡ (Pm â¢ Gm)
- Bc â (Pm â¨ Gm)
- Cb â (Pm â¢ Gm)


formal_logic

Question:
Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
I â¡ ~J
I â¨ J / I

Choices:
- Valid
- Invalid. Counterexample when I and J are true
- Invalid. Counterexample when I is true and J is false
- Invalid. Counterexample when J is true and I is false


formal_logic

Question:
 Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
~S â¨ T
~S Â· U
~T â¨ U / T Â· U

Choices:
- Valid
- Invalid. Counterexample when S, T, and U are true
- Invalid. Counterexample when S and U are true and T is false
- Invalid. Counterexample when U is true and S and T are false


formal_logic

Question:
Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
~C â D
D â C / C

Choices:
- Valid
- Invalid. Counterexample when C and D are true
- Invalid. Counterexample when C is true and D is false
- Invalid. Counterexample when D is true and C is false


formal_logic

Question:
 Use the following key to translate the given formula of PL to natural, English sentences.
A: Marina reads a Percy Jackson book.
B: Izzy plays Minecraft.
C: Emily stops working.
D: Russell makes dinner.
E: Ashleigh stops by.
~C â¨ D

Choices:
- If Emily doesn't stop working then Russell makes dinner.
- Emily stops working unless Russell makes dinner.
- Emily stops working unless Russell doesn't make dinner.
- Emily doesn't stop working unless Russell makes dinner.


formal_logic

Question:
 Construct a complete truth table for the following pairs of propositions. Then, using the truth tables, determine whether the statements are logically equivalent or contradictory. If neither, determine whether they are consistent or inconsistent. Justify your answers.
~(J â¨ K) Â· L and (L â J) Â· K

Choices:
- Logically equivalent
- Contradictory
- Neither logically equivalent nor contradictory, but consistent
- Inconsistent


formal_logic

Question:
 Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
~A Â· ~B
(A â¨ C) â¨ B / C

Choices:
- Valid
- Invalid. Counterexample when A and B are true and C is false
- Invalid. Counterexample when A is true and B and C are false
- Invalid. Counterexample when B is true and A and C are false


formal_logic

Question: Identify the conclusion of the following argument. There are those who use predicate variables; the values of these variables are attributes. Predicates are wanted in all sentences regardless of whether there are attributes to refer to. The dummy predicate 'F' is wanted generally for expository purposes. If we are going to quantify over attributes and refer to them, then clarity is served by using recognizable variables and distinctive names for the purposes, and not mixing these up with the predicates. (Quine, Philosophy of Logic)

Choices:
- There are those who use predicate variables; the values of these variables are attributes.
- Predicates are wanted in all sentences regardless of whether there are attributes to refer to.
- The dummy predicate 'F' is wanted generally for expository purposes.
- If we are going to quantify over attributes and refer to them, then clarity is served by using recognizable variables and distinctive names for the purposes, and not mixing these up with the predicates.


formal_logic

Question: Select the best translation into predicate logic. Some animals are neglected by cruel people. (Ax: x is an animal; Cx: x is cruel; Px: x is a person; Nxy: x neglects y)

Choices:
- (âx)[(Ax â¢ Cx) â¢ (ây)(Py â¢ Nyx)]
- (âx)[(Cx â¢ Px) â¢ (ây)(Ay â¢ Nxy)]
- (âx)[(Ax â¢ Px) â¢ (ây)(Cy â¢ Nxy)]
- (âx)(ây){[(Ax â¢ Cy) â¢ Py] â¢ Nxy)]}


formal_logic

Question: Select the best translation into predicate logic. Kevin is introduced to JosÃ© by Wilma. (j: JosÃ©; k: Kevin; w: Wilma; Ixyz: x introduces y to z)

Choices:
- Iwjk
- Ijkw
- Ikjw
- Iwkj


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
Brittany likes fish and lizards, but not cats.

Choices:
- F â¢ L â¢ ~C
- (F â¢ L) â¢ ~C
- (F â¢ L) â¨ ~C
- C â¢ (F â¢ L)


formal_logic

Question:
 Which of the following propositions is not an immediate (one-step) consequence in PL of the given premises?
I â (J â¡ K)
(J â¡ K) â (L â¨ M)
I â ~L

Choices:
- ~L
- J â¡ K
- I â (L â¨ M)
- ~L â (J â¡ K)


formal_logic

Question:
Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
E â (F â¨ ~G)
F â (~E â¨ ~G) / ~(E â¡ F)

Choices:
- Valid
- Invalid. Counterexample when E, F, and G are true
- Invalid. Counterexample when E and F are true and G is false
- Invalid. Counterexample when E, F, and G are false


formal_logic

Question: Select the best translation into predicate logic: Some students work hard.

Choices:
- (âx)(Wx â¨ Sx)
- (âx)(Sx â¨ Wx)
- (âx)(Sx â¢ Wx)
- (âx)(Sx â Wx)


formal_logic

Question:
 Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?
(N â ~O) â (O â¨ Q)
P â (N â ~O)
N â P

Choices:
- P
- N â ~O
- O â¨ Q
- ~P


formal_logic

Question: Identify the antecedent of the following conditional proposition: The university raises tuition if, and only if, both the governor approves of it and the board of trustees recommends it.

Choices:
- The university raises tuition.
- The governor approves of it.
- The board of trustees recommends it.
- None of the above


formal_logic

Question: Identify the conclusion of the following argument. All of psychology has gotten stuck in moral prejudices and fears. No one has come close to understanding it as the development of the will to power. However, if a person even begins to regard the effects of hatred, envy, covetousness, and the lust to rule as conditions of life and furthermore, as factors essential to the general economy of life, he will begin to get seasick. At this point, he begins to lose himself, and sail over morality. Thus, psychology becomes again the path to fundamental problems. (Friedrich Nietzsche, Beyond Good and Evil)

Choices:
- All of psychology has gotten stuck in moral prejudices and fears.
- No one has come close to understanding it as the development of the will to power.
- If a person even begins to regard the effects of hatred, envy, covetousness, and the lust to rule as conditions of life and furthermore, as factors essential to the general economy of life, he will begin to get seasick.
- Psychology becomes again the path to fundamental problems.


formal_logic

Question:
 Use the following key to translate the given formula of PL to natural, English sentences.
A: Marina reads a Percy Jackson book.
B: Izzy plays Minecraft.
C: Emily stops working.
D: Russell makes dinner.
E: Ashleigh stops by.
(~A â¨ ~B) â C

Choices:
- If neither Marina reads a Percy Jackson book nor Izzy plays Minecraft, then Emily stops working.
- If it's not the case that both Marina reads a Percy Jackson book and Izzy plays Minecraft, then Emily stops working.
- Either Marina not reading a Percy Jackson book or Izzy not playing Minecraft entails that Emily stops working.
- Emily stopping working is a sufficient condition for either Marina not reading a Percy Jackson book or Izzy not playing Minecraft.


formal_logic

Question:
 Use indirect truth tables to determine whether each set of propositions is consistent. If the set is consistent, choose an option with a consistent valuation. (There may be other consistent valuations.)
(E â F) â G
(~E â¨ F) â¡ (H â¨ I)
I â (J â ~H)
~G â ~J

Choices:
- Inconsistent
- Consistent. Consistent valuation when E is true and F, G, H, I, and J are false
- Consistent. Consistent valuation when E and H are true and F, G, I, and J are false
- Consistent. Consistent valuation when E and I are true and F, G, H, and J are false


formal_logic

Question:
Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?
E â ~F
~F â G
~G

Choices:
- E â F
- F â G
- G â E
- ~~F


formal_logic

Question:
 Use the following key to translate the given formula of PL to natural, English sentences.
A: Marina reads a Percy Jackson book.
B: Izzy plays Minecraft.
C: Emily stops working.
D: Russell makes dinner.
E: Ashleigh stops by.
(A â¨ ~E) â¡ (D â¢ ~B)

Choices:
- Either Marina reading a Percy Jackson book or Ashleigh not stopping by is a necessary condition for both Russell making dinner and Izzy not playing Minecraft.
- Either Marina reading a Percy Jackson book or Ashleigh not stopping by is a necessary and sufficient condition for Russell making dinner and Izzy playing Minecraft.
- Marina reads a Percy Jackson book unless Ashleigh stops by if, and only if, both Russell makes dinner and Izzy doesn't play Minecraft.
- Either Marina reads a Percy Jackson book or Ashleigh does not stop by just in case both Russell makes dinner and Izzy doesn't play Minecraft.


formal_logic

Question:
Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
P â (Q â¨ R)
(Q Â· S) â ~P
~(~Q â¨ R) / ~P

Choices:
- Valid
- Invalid. Counterexample when P, Q, R, and S are true
- Invalid. Counterexample when P and Q are true and R and S are false
- Invalid. Counterexample when P, R, and S are true and Q is false


formal_logic

Question:
 Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?
~E â ~F
G â F
H â¨ ~E
H â I
~I

Choices:
- E â F
- F â G
- H â ~E
- ~H


formal_logic

Question: Identify the conclusion of the following argument. Remember to remove any conclusion indicators. It is wrong for society to kill a murderer. This follows for the reason that if a murderer is wrong in killing his victim, then society is also wrong in killing the murderer. And a murderer is wrong in killing his victim.

Choices:
- It is wrong for society to kill a murderer.
- This follows for the reason that if a murderer is wrong in killing his victim, then society is also wrong in killing the murderer.
- If a murderer is wrong in killing his victim, then society is also wrong in killing the murderer.
- And a murderer is wrong in killing his victim.


formal_logic

Question:
 Select the best English interpretation of the given arguments in predicate logic.
Dh â ~Pt
(âx)Px â¨ (âx)Mx
~Mb	/ ~Dh

Choices:
- If my headache is dualist state, then your tickle is a physical state. Either everything is physical or everything is mental. But my broken toe is not a mental state. So my headache is not a dualist state.
- If my headache is dualist state, then your tickle is not a physical state. Either everything is physical or everything is mental. But my broken toe is not a mental state. So my headache is not a dualist state.
- If my headache is dualist state, then your tickle is not a physical state. If everything is physical then everything is mental. But my broken toe is not a mental state. So my headache is not a dualist state.
- If my headache is dualist state, then your tickle is not a physical state. Everything is either physical or mental. But my broken toe is not a mental state. So my headache is not a dualist state.


formal_logic

Question: Select the best English interpretation of the given proposition, using the following translation key: Ax: x is an apartment Hx: x is a house Lx: x is large Bxy: x is bigger than y (âx)[Ax â (ây)(Hy â¢ Bxy)]

Choices:
- Every apartment is bigger than some house.
- Every house is bigger than all apartments.
- Every house is bigger than some apartment.
- Some house is bigger than every apartment.


formal_logic

Question: Select the best translation into predicate logic: Johnny came late.

Choices:
- jL
- Lj
- Cj â¨ Lj
- Lx


formal_logic

Question:
Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
(T Â· ~U) â ~W
~W â X
~Z â W
~(X Â· Z) / T â U

Choices:
- Valid
- Invalid. Counterexample when T, X, and Z are true and U and W are false
- Invalid. Counterexample when T and X are true and U, W, and Z are false
- Invalid. Counterexample when T, W, and Z are true and U and X are false


formal_logic

Question:
Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
H â¡ (I Â· ~J)
K â¡ ~H
~(K â J) / I â¡ J

Choices:
- Valid
- Invalid. Counterexample when I, H, and K are true and J is false
- Invalid. Counterexample when I and H are true and J and K are false
- Invalid. Counterexample when K is true and I, H, and J are false


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
Doctors are helpful unless their patients are rude.

Choices:
- H â¡ R
- H â¢ R
- H â¨ ~R
- H â¨ R


formal_logic

Question:
 Use indirect truth tables to determine whether each set of propositions is consistent. If the set is consistent, choose an option with a consistent valuation. (There may be other consistent valuations.)
D â¡ E
F â¨ D
~E Â· ~F

Choices:
- Inconsistent
- Consistent. Consistent valuation when D, E, and F are true
- Consistent. Consistent valuation when D and E are true and F is false
- Consistent. Consistent valuation when D and F are true and E is false


formal_logic

Question: Select the best translation into predicate logic. JosÃ© introduces Wilma to Kevin. (j: JosÃ©; k: Kevin; w: Wilma; Ixyz: x introduces y to z)

Choices:
- Iwkj
- Ijwk
- Iwjk
- Ijkw


formal_logic

Question: Select the best translation into predicate logic. Marco doesn't move from Spain to Italy. (i: Italy; m: Marco; s: Spain; Mxyz: x moves to y from z)

Choices:
- ~Mmsi
- M~mis
- ~Mmis
- M~msi


formal_logic

Question: Identify the antecedent of the following conditional proposition: If the Bees don't win their first game, then both the Aardvarks and the Chipmunks win their first games.

Choices:
- The Aardvarks win their first game.
- The Bees don't win their first game.
- The Chipmunks win their first game.
- Both the Aardvarks and the Chipmunks win their first games.


formal_logic

Question: Identify the conclusion of the following argument. Utilitarian theory is embarrassed by the possibility of utility monsters. A utility monster gets enormous gains in utility, greater than the utility lost by the sacrifices of others. The sacrifices of even large numbers of other people are outweighed by the gains of the utility monster. The theory seems to require that we all be sacrificed in the monste's maw in order to increase total utility. (Robert Nozick, Anarchy, State, and Utopia)

Choices:
- Utilitarian theory is embarrassed by the possibility of utility monsters.
- A utility monster gets enormous gains in utility.
- A utility monster gets gains in utility greater than the utility lost by the sacrifices of others.
- The sacrifices of even large numbers of other people are outweighed by the gains of the utility monster.


formal_logic

Question:
 Which of the given formulas of PL is the best symbolization of the following sentence?
Either England's importing beef is not a necessary condition for France's subsidizing agriculture, or China promotes human rights if South Africa supplies diamonds.

Choices:
- (~F â E) â¨ (C â¡ ~S)
- (~E â F) â¨ (C â S)
- (~F â E) â¨ (C â¡ S)
- ~(F â E) â¨ (S â C)


formal_logic

Question: Identify the conclusion of the following argument. From a historical point of view, genetics is a young science. The principles that govern inheritance traits were described less than 150 years ago. Furthermore, around the turn of the twentieth century, the laws of inheritance were rediscovered. But even then, the importance of DNA was not really understood until the 1950s.

Choices:
- But even then, the importance of DNA was not really understood until the 1950s.
- The importance of DNA was not really understood until the 1950s.
- From a historical point of view, genetics is a young science.
- The principles that govern inheritance traits were described less than 150 years ago.


formal_logic

Question: Select the best translation into predicate logic: Abdul and Cleopatra are Egyptian.

Choices:
- Ea â¢ Ec
- Ea â¢ c
- Ae â¨ Ce
- Ex â¢ Ey


formal_logic

Question: Identify the antecedent of the following conditional proposition: The restaurant does not have peas, so instead they serve corn and potatoes.

Choices:
- The restaurant has peas.
- The restaurant does not have peas.
- The restaurant serves corn.
- The restaurant serves potatoes.


formal_logic

Question:
 Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
~X â Y
Y â Z
~Z / ~X

Choices:
- Valid
- Invalid. Counterexample when X, Y, and Z are true
- Invalid. Counterexample when Y and Z are true and Z is false
- Invalid. Counterexample when X is true and Y and Z are false


formal_logic

Question: Select the best translation into predicate logic: All robots are artifacts.

Choices:
- (âx)(Ax â¨ Rx)
- (âx)(Ax â¢ Rx)
- (âx)(Rx â Ax)
- (âx)(Rx â¢ Ax)


formal_logic

Question:
 Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
P â Q
Q Â· R / ~P Â· R

Choices:
- Valid
- Invalid. Counterexample when P, R, and Q are true
- Invalid. Counterexample when P and Q are true and R is false
- Invalid. Counterexample when R and Q are true and P is false


formal_logic

Question: Select the best translation into predicate logic: Either Taylor or Eric is a latte boy.

Choices:
- Lt â¨ Le
- Lx â¨ Ly
- tL â¨ eL
- Tl â El


formal_logic

Question:
Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?
(A â¨ B) â (C â¨ D)
A â¨ B
~C

Choices:
- ~A â¨ ~B
- ~~C
- C â¨ D
- (A â¨ B) â D


formal_logic

Question:
Construct a complete truth table for the following argument. Then, using the truth table, determine whether the argument is valid or invalid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
~K â¡ L / (K Â· L) â¨ (K Â· ~L)

Choices:
- Valid
- Invalid. Counterexample when K and L are true
- Invalid. Counterexample when K is true and L is false
- Invalid. Counterexample when L is true and K is false


formal_logic

Question: Select the best translation into predicate logic: Sheena is a punk rocker.

Choices:
- Sx
- xS
- sP
- Ps


formal_logic

Question:
 Construct a complete truth table for the following pairs of propositions. Then, using the truth tables, determine whether the statements are logically equivalent or contradictory. If neither, determine whether they are consistent or inconsistent. Justify your answers.
C â (D â¨ C) and C Â· ~D

Choices:
- Logically equivalent
- Contradictory
- Neither logically equivalent nor contradictory, but consistent
- Inconsistent


formal_logic

Question: Select the best English interpretation of the given proposition, using the following translation key: Ax: x is an apartment Hx: x is a house Lx: x is large Bxy: x is bigger than y (âx)[Hx â¢ (ây)(Ay â Bxy)]

Choices:
- Some houses are smaller than all apartments.
- Every house is bigger than every apartment.
- Some apartment is smaller than every house.
- Some houses are bigger than every apartment.


formal_logic

Question: Identify the antecedent of the following conditional proposition: The Bees win their first game only if either the Aardvarks or the Chipmunks do not win their first games.

Choices:
- The Aardvarks do not win their first game.
- The Bees win their first game.
- The Chipmunks do not win their first game.
- Either the Aardvarks or the Chipmunks do not win their first games.


formal_logic

Question:
Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
(K Â· L) â M
N â ~M
N â¨ K / L â K

Choices:
- Valid
- Invalid. Counterexample when L, M, and N are true and K is false
- Invalid. Counterexample when L and M are true and K and N are false
- Invalid. Counterexample when L and N are true and K and M are false


formal_logic

Question:
 Construct a complete truth table for the following pairs of propositions. Then, using the truth tables, determine whether the statements are logically equivalent or contradictory. If neither, determine whether they are consistent or inconsistent. Justify your answers.
(~M â ~N) â¨ (O â¡ N) and (~M Â· N) Â· [(~O â¨ ~N) Â· (O â¨ N)]

Choices:
- Logically equivalent
- Contradictory
- Neither logically equivalent nor contradictory, but consistent
- Inconsistent


formal_logic

Question: Identify the antecedent of the following conditional proposition: The Bees winning their first game is necessary for either the Aardvarks or the Chipmunks not winning their first game.

Choices:
- The Aardvarks do not win their first game.
- The Bees win their first game.
- The Chipmunks do not win their first game.
- Either the Aardvarks or the Chipmunks do not win their first game.


formal_logic

Question: Identify the conclusion of the following argument. The sense of a term is supposed to determine its reference. But reference can vary without any difference in thought. So, the senses of terms must be able to vary without variation in thought. So, our thoughts do not determine the meanings of our terms; meanings are not in the head. (Hilary Putnam)

Choices:
- The sense of a term is supposed to determine its reference.
- But reference can vary without any difference in thought.
- Reference can vary without any difference in thought.
- Our thoughts do not determine the meanings of our terms; meanings are not in the head.


formal_logic

Question: Select the best translation into predicate logic. All jellybeans are sweeter than all fruit. (Fx: x is a fruit; Jx: x is a jellybean; Sxy: x is sweeter than y)

Choices:
- (âx)[Fx â (ây)(Jy â Sxy)]
- (âx)(ây)[(Fx â¢ Jy) â¢ Sxy]
- (âx)(ây)[Sxy â (Fy â¢ Jx)]
- (âx)[Jx â (ây)(Fy â Sxy)]


formal_logic

Question: Select the best translation into predicate logic: Some folks are lucky.

Choices:
- (âx)(Fx â¢ Lx)
- Fl
- Lf
- (âx)(Fx â¢ Lx)


formal_logic

Question:
Use indirect truth tables to determine whether the following argument is valid. If the argument is invalid, choose an option which presents a counterexample. (There may be other counterexamples as well.)
(A â¨ B) â C
C â ~D / D â A

Choices:
- Valid
- Invalid. Counterexample when B, C, and D are true and A is false
- Invalid. Counterexample when B and D are true and A and C are false
- Invalid. Counterexample when A, B, and C are false and D is true


formal_logic

Question: Select the best translation into predicate logic: Some athletes don't get injured.

Choices:
- ~Ia
- (âx)(Ax â¢ ~Ix)
- ~Ai
- (âx)(Ix â¨ ~Ax)


global_facts

Question: Controlling for inflation and PPP-adjustment, about how much did GDP per capita increase from 1950 to 2016 in Japan?

Choices:
- by 5 fold
- by 10 fold
- by 15 fold
- by 20 fold


global_facts

Question: At its peak, what was the approximate difference in approval of school desegration from the South and the rest of the U.S.?

Choices:
- 80%
- 40%
- -40%
- -80%


global_facts

Question: What is the biggest cause of death in children under five years old (as of 2017)?

Choices:
- Lower respiratory infections
- Preterm birth complications
- Diarrheal diseases
- Malaria


global_facts

Question: As of 2017, the share of GDP spent on the military by Saudi Arabia is about

Choices:
- 1%
- 3%
- 6%
- 10%


global_facts

Question: As of 2017, how many people in the world have some access to electricity?

Choices:
- 60%
- 70%
- 80%
- 90%


global_facts

Question: In 2016, about how many people in the United States were homeless?

Choices:
- 55,000
- 550,000
- 5,500,000
- 55,000,000


global_facts

Question: As of 2015, what percentage of the global population over 15 years old was literate?

Choices:
- 81%
- 86%
- 91%
- 96%


global_facts

Question: In 1935 roughly how many Americans were in favor of Social Security act?

Choices:
- 90%
- 70%
- 50%
- 30%


global_facts

Question: About how many people are infected by HIV/AIDS as of 2020?

Choices:
- 3 million
- 14 million
- 42 million
- 124 million


global_facts

Question: As of 2019, about what percentage of Americans say the relationship between the U.S. and Germany is good?

Choices:
- 60%
- 75%
- 90%
- 45%


global_facts

Question: In 2017, about how many people died from terrorism globally?

Choices:
- 260
- 2,600
- 26,000
- 260,000


global_facts

Question: As of 2017, what fraction of the population in Brazil used the internet in the past three months?

Choices:
- 18%
- 38%
- 58%
- 78%


global_facts

Question: As of 2019, about what percentage of people from Turkey agree that the state is run for the benefit of all the people?

Choices:
- 36%
- 51%
- 66%
- 81%


global_facts

Question: Controlling for inflation and PPP-adjustment, about how much did GDP per capita increase from 1950 to 2016 in China?

Choices:
- by 4 fold
- by 8 fold
- by 16 fold
- by 32 fold


global_facts

Question: The percentage of children in Vietnam (age 8) who reported physical punishment by teachers in the past week in 2009 was about what?

Choices:
- 10%
- 20%
- 40%
- 80%


global_facts

Question: Before being reelected for a third term as president how many Americans approved of running a third time?

Choices:
- 20%
- 40%
- 60%
- 80%


global_facts

Question: What is the percentage of children aged 13-15 in Egypt who reported being bullied at least once in the past couple of months as of 2015?

Choices:
- 10%
- 30%
- 50%
- 70%


global_facts

Question: Which of the following causes more deaths globally each year (as of 2017)?

Choices:
- Diarrheal diseases
- Diabetes
- Dementia
- Road injuries


global_facts

Question: Consider the following statements: (1) In every country, people think other individuals in their country are less happy than they actually are. (2) In the United States, womenï¿½s happiness has increased both absolutely and relative to men. Which of these statements is True/False?

Choices:
- True, True
- True, False
- False, True
- False, False


global_facts

Question: As of 2018, about what percentage of Indians say that having an increasing number of people of many different races, ethnic groups and nationalities in their country makes it a better place to live (as opposed to worse or no difference)?

Choices:
- 23%
- 38%
- 53%
- 68%


global_facts

Question: As of 2019, about what percentage of people from the United States says homosexuality should be accepted by society?

Choices:
- 52%
- 62%
- 72%
- 82%


global_facts

Question: Consider the following statements: (1) As countries get richer, the population tends to report higher average life satisfaction. (2) Important life events such as marriage or divorce do affect our happiness, but have surprisingly little long-term impact. Which of these statements is True/False, as of 2020?

Choices:
- True, True
- True, False
- False, True
- False, False


global_facts

Question: As of 2019, which of the following had the lowest life expectancy?

Choices:
- Brazil
- China
- Mexico
- Iran


global_facts

Question: As of 2015, the global fertility rate was about

Choices:
- 1.5 children per woman
- 2.5 children per woman
- 3.5 children per woman
- 4.5 children per woman


global_facts

Question: As of 2018, about what percentage of US adults say criminal risk assessment for people up for parole is an unreasonable application of algorithmic decision making?

Choices:
- 26%
- 41%
- 56%
- 71%


global_facts

Question: In 1965 how many Americans thought that sending troops to Vietnam was a mistake?

Choices:
- 25%
- 45%
- 65%
- 85%


global_facts

Question: Different less developed countries have different levels of secondary school enrollment. Some countries with high secondary-school enrollment are, as of 2020,

Choices:
- Colombia, Peru, Uruguay, and Costa Rica.
- Bhutan, Niger, Cambodia, and Costa Rica.
- Uruguay, Costa Rica, Timor-Leste, and Pakistan.
- Bhutan, Cambodia, Uruguay and Costa Rica.


global_facts

Question: The percentage of children in India (age 8) who reported physical punishment by teachers in the past week in 2009 was about what?

Choices:
- 38%
- 58%
- 78%
- 98%


global_facts

Question: As of 2017, what percentage of Americans live in urban areas?

Choices:
- 62%
- 72%
- 82%
- 92%


global_facts

Question: As of 2019, about what percentage of Indians say it is necessary to believe in God in order to be moral and have good values?

Choices:
- 59%
- 69%
- 79%
- 89%


global_facts

Question: As of 2020, about how much do you need to make annually to be among the richest one percent in the world?

Choices:
- $150,000
- $75,000
- $35,000
- $15,000


global_facts

Question: What was GDP per capita in the United States in 1950 when adjusting for inflation and PPP in 2011 prices?

Choices:
- About $3k
- About $8k
- About $15k
- About $30k


global_facts

Question: In 2016, what percentage of the population of South Sudan had access to electricity?

Choices:
- 9%
- 29%
- 59%
- 79%


global_facts

Question: As of 2013, share of people in the Ethiopia who think political parties are corrupt is

Choices:
- 24%
- 44%
- 64%
- 84%


global_facts

Question: The global HIV/AIDS death rate is highest for which of these age groups?

Choices:
- Under 5
- 14-May
- 15-49
- over 50


global_facts

Question: In 1943 how many Americans believed in the Holocaust?

Choices:
- 30%
- 50%
- 70%
- 90%


global_facts

Question: As of 2017, the share of GDP spent on the military by China is about

Choices:
- 0.50%
- 2%
- 6%
- 12%


global_facts

Question: As of 2019, about what percentage of people from Russia says homosexuality should be accepted by society?

Choices:
- 14%
- 24%
- 34%
- 44%


global_facts

Question: As of 2017, the share of deaths in Greenland by suicide is about

Choices:
- 0.90%
- 1.80%
- 3.60%
- 7.20%


global_facts

Question: Overall, the growth rate of average incomes in less developed countries between 1960 and 1995

Choices:
- was approximately zero
- exceeded that of high income countries
- exceeded that of Britain during the industrial revolution
- was approximately 3.0% per year


global_facts

Question: What is the percentage of children aged 13-15 in China who reported being in a physical fight at school, one or more times during the past 12 months as of 2015?

Choices:
- 9%
- 19%
- 39%
- 59%


global_facts

Question: At the time of independence, there were already hundreds of thousands of university graduates in ____, but hardly any at all in ____.

Choices:
- India, Congo
- India, South Korea
- Congo, South Korea
- South Korea, India


global_facts

Question: As of 2019, about what percentage of Turks say God plays an important role in their life?

Choices:
- 59%
- 69%
- 79%
- 89%


global_facts

Question: Which of the following was responsible for the most death in the 20th century?

Choices:
- Earthquakes
- Volcanic activity
- Wildfires
- Floods


global_facts

Question: Ross Perot makes polling history by leading the presidential race briefly in June as a third-party candidate with 39%. He winds up with _% of the popular vote.

Choices:
- 1
- 7
- 13
- 19


global_facts

Question: Which of the following countries invested the largest fraction of its GDP in renewable energy in 2015?

Choices:
- China
- Japan
- Chile
- India


global_facts

Question: Controlling for inflation and PPP-adjustment, about how much did GDP per capita increase from 1950 to 2016 in South Korea?

Choices:
- by 4 fold
- by 8 fold
- by 16 fold
- by 32 fold


global_facts

Question: As of 2017, what percentage of Indians live in urban areas?

Choices:
- 19%
- 34%
- 49%
- 64%


global_facts

Question: As of 2015, about what percentage of the worldï¿½s land area is forested?

Choices:
- 15%
- 30%
- 45%
- 60%


global_facts

Question: As of 2015, agriculture made up about what percentage of total Indian GDP?

Choices:
- 8%
- 16%
- 32%
- 64%


global_facts

Question: Before Nixon resigned how many believed he should be removed from office?

Choices:
- 79%
- 98%
- 33%
- 57%


global_facts

Question: Public spending on education in the world is about what percentage of global GDP as of 2017?

Choices:
- 1%
- 2%
- 4%
- 8%


global_facts

Question: As of 2019, unsafe water is responsible for about how many deaths each year?

Choices:
- 1.2 million
- 2.4 million
- 3.6 million
- 4.8 million


global_facts

Question: Many countries that became independent after World War II found that the legacy of colonialism hindered their economic development. The list of hindrances included

Choices:
- artificial political boundaries that covered diverse ethnic groups with little in common
- inadequate access to higher education and training for nationals under the colonial administration
- control of domestic commerce by foreign minority groups which had been brought in by the colonial power
- all of the above


global_facts

Question: The conjecture that inequality first increases with development, then decreases with further development (known as the ï¿½inverted U hypothesisï¿½) has, as of 2020, been

Choices:
- strongly supported by most studies
- supported mainly by cross-section, not time-series studies
- supported mainly by time-series, not cross-section studies
- generally repudiated by empirical studies


global_facts

Question: What is the median international income as of 2020?

Choices:
- $300
- $1,000
- $10,000
- $30,000


global_facts

Question: As of 2017, the share of global deaths by suicide is about

Choices:
- 0.70%
- 1.40%
- 2.80%
- 5.60%


global_facts

Question: As of 2018, about what percentage of US adults say computer programs will always reflect human bias?

Choices:
- 43%
- 58%
- 73%
- 88%


global_facts

Question: How many children between the ages of 5-14 worked globally as of 2012?

Choices:
- 5 million
- 30 million
- 150 million
- 500 million


global_facts

Question: About what percentage of the global population was literate in 1950?

Choices:
- 36%
- 56%
- 76%
- 96%


global_facts

Question: As of 2019, about what percentage of South Koreans say it is necessary to believe in God in order to be moral and have good values?

Choices:
- 25%
- 45%
- 65%
- 85%


global_facts

Question: As of 2020, about what percentage of the world population practices open defecation?

Choices:
- 2%
- 4%
- 9%
- 18%


global_facts

Question: In 1997, the World Bank found that the fraction of the worldï¿½s population living in low and lower-middle income countriesï¿½that is, countries with per capita incomes of $1230 or lessï¿½was approximately

Choices:
- 25%
- 40%
- 55%
- 75%


global_facts

Question: As of 2013, share of people in the United States who think political parties are corrupt is

Choices:
- 36%
- 56%
- 76%
- 96%


global_facts

Question: Which of the following is true as of 2020?

Choices:
- males are more likely to have depression and are more likely to have an alcohol use disorder than females.
- females are more likely to have depression and are more likely to have an alcohol use disorder than males.
- males are more likely than females to have depression while females are more likely than males to have an alcohol use disorder.
- females are more likely than males to have depression while males are more likely than females to have an alcohol use disorder.


global_facts

Question: Which of the following countries emitted the most CO2 per capita in 2017?

Choices:
- Japan
- Canada
- Russia
- Iran


global_facts

Question: Which of the following countries generated the most total energy from solar sources in 2019?

Choices:
- China
- United States
- Germany
- Japan


global_facts

Question: What was GDP per capita in the United States in 1850 when adjusting for inflation and PPP in 2011 prices?

Choices:
- About $300
- About $3k
- About $8k
- About $15k


global_facts

Question: Worldwide, 30 year old men have spent 10 years in school, on average. How many years have women of the same age spent in school, as of 2020?

Choices:
- 12 years
- 9 years
- 6 years
- 3 years


global_facts

Question: As of 2019, about what percentage of people from Brazil says homosexuality should be accepted by society?

Choices:
- 37%
- 47%
- 57%
- 67%


global_facts

Question: In Sub-Saharan Africa, as of 2020,

Choices:
- no nation has been able to grow in the past years.
- the Democratic Republic of Congo has become poorer than it initially was in 1980.
- some countries have had relatively significant growth rates.
- some countries have had relatively significant growth rates, but the Democratic Republic of Congo has become poorer than it initially was in 1980.


global_facts

Question: What is the percentage of children aged 13-15 in the United States who reported being bullied at least once in the past couple of months as of 2015?

Choices:
- 26%
- 46%
- 66%
- 86%


global_facts

Question: As of 2017, what fraction of the population in India used the internet in the past three months?

Choices:
- 11%
- 26%
- 41%
- 56%


global_facts

Question: Which of the following is not an element of the redistribution-with-growth policy approach?

Choices:
- minimum wage legislation
- land reform
- progressive taxation
- increased access to education


global_facts

Question: The greatest population growth rate has taken place

Choices:
- in Africa, which is the poorest region of the world with the lowest overall economic growth.
- in Asia, which is the poorest region of the world with a steady overall economic growth.
- in Asia, which is the poorest region of the world with the lowest overall economic growth.
- in Africa, which is the poorest region of the world with a steady overall economic growth.


global_facts

Question: As of 2013, which of the following countries had the highest per capita rate of homelessness?

Choices:
- US
- Chile
- Ireland
- Spain


global_facts

Question: As of 2016, about what percentage of adults aged 18 years or older were obese?

Choices:
- 6%
- 13%
- 27%
- 46%


global_facts

Question: As of 2013, share of people in the India who think political parties are corrupt is

Choices:
- 26%
- 46%
- 66%
- 86%


global_facts

Question: About what percentage of survey respondents from China report having paid a bribe in the last year to access public services (such as education; judiciary; medical and health; police; registry and permit services; utilities; tax revenue and customs; and land service) as of 2017?

Choices:
- 26%
- 46%
- 66%
- 86%


global_facts

Question: About what percentage of survey respondents from India report having paid a bribe in the last year to access public services (such as education; judiciary; medical and health; police; registry and permit services; utilities; tax revenue and customs; and land service) as of 2017?

Choices:
- 29%
- 49%
- 69%
- 89%


global_facts

Question: As of 2016, about what percentage of adults aged 18 years or older were overweight?

Choices:
- 10%
- 20%
- 40%
- 80%


global_facts

Question: As of 2019, about what percentage of the world population lives in extreme poverty (less than $1.90 a day)?

Choices:
- 5%
- 10%
- 15%
- 25%


global_facts

Question: The percentage of children in Ethiopia (age 8) who reported physical punishment by teachers in the past week in 2009 was about what?

Choices:
- 18%
- 38%
- 58%
- 78%


global_facts

Question: Which of the following countries emitted the most CO2 in 2017?

Choices:
- Canada
- Russia
- Iran
- Japan


global_facts

Question: Which of the following mental disorders is most prevalent in the world?

Choices:
- Bipolar disorder
- Schizophrenia
- Alcohol use disorders
- Anxiety disorders


global_facts

Question: About what percentage of survey respondents from Mexico report having paid a bribe in the last year to access public services (such as education; judiciary; medical and health; police; registry and permit services; utilities; tax revenue and customs; and land service) as of 2017?

Choices:
- 31%
- 51%
- 71%
- 91%


global_facts

Question: In 2018, about how many chickens were killed for meat production?

Choices:
- 690 million
- 6.9 billion
- 69 billion
- 690 billion


global_facts

Question: As of 2017, the share of GDP spent on the military by the United States is about

Choices:
- 1%
- 3%
- 6%
- 10%


global_facts

Question: As of 2019, about what percentage of Americans say it is very important to have free media in our country without government/state censorship?

Choices:
- 50%
- 60%
- 70%
- 80%


global_facts

Question: As of 2018, about what percentage of people from Tunisia say that having an increasing number of people of many different races, ethnic groups and nationalities in their country makes it a better place to live (as opposed to worse or no difference)?

Choices:
- 24%
- 39%
- 54%
- 69%


global_facts

Question: As of 2019, about what share of electricity came from fossil fuels in the United States?

Choices:
- 23%
- 43%
- 63%
- 83%


global_facts

Question: World Bank data show that in 1995, the poorest 20% of households accounted for 7.5% of household income in Niger, the next 20% of households accounted for 11.8% of income, the middle 20% accounted for 15.5% of income, the second richest 20% accounted for 21.1% of income, and the top 20% accounted for 44.1% of income. What was the cumulative income share of the bottom 60% of households in Niger?

Choices:
- 15.50%
- 34.80%
- 48.10%
- 65.20%


global_facts

Question: As of 2019, about what percentage of Italians say it is very important to have free media in our country without government/state censorship?

Choices:
- 41%
- 56%
- 71%
- 86%


global_facts

Question: In 1987 during Iran Contra what percent of Americans believe Reagan was witholding information?

Choices:
- 2%
- 25%
- 50%
- 75%


global_facts

Question: As of 2019, about what percentage of French people say God plays an important role in their life?

Choices:
- 11%
- 31%
- 51%
- 71%


global_facts

Question: What is the percentage of children aged 13-15 in the United States who reported being in a physical fight at school, one or more times during the past 12 months as of 2015?

Choices:
- 15%
- 35%
- 55%
- 75%


global_facts

Question: As of 2015, agriculture made up about what percentage of total US GDP?

Choices:
- 1%
- 3%
- 9%
- 20%


global_facts

Question: As of 2019, about what percentage of the global population does not have access to safe drinking water?

Choices:
- 10%
- 20%
- 30%
- 40%


global_facts

Question: What is the percentage of children aged 13-15 in Japan who reported being bullied at least once in the past couple of months as of 2015?

Choices:
- 6%
- 16%
- 36%
- 66%


global_facts

Question: As of 2019, about what percentage of Germans say the relationship between the U.S. and Germany is good?

Choices:
- 34%
- 49%
- 64%
- 79%


high_school_chemistry

Question: What is the mass of one molecule of cholesterol (C27H46O, molecular mass = 386)?

Choices:
- 6.41 Ã 10^-22 g
- 1.5 Ã 10^-21 g
- 1.38 Ã 10^-21 g
- 3 Ã 10^-23 g


high_school_chemistry

Question: Neutral atoms of chlorine are bombarded by high-energy photons, causing the ejection of electrons from the various filled subshells. Electrons originally from which subshell would have the highest velocity after being ejected?

Choices:
- 1s
- 2p
- 3p
- 3d


high_school_chemistry

Question: Which of the following molecules is expected to have the highest normal boiling point?

Choices:
- CH3CH2CH2CH3
- CH3CH2CH2CH2OH
- CH3CH2CH2CH2Cl
- CH3CH2CH2CH2Br


high_school_chemistry

Question: Chemists often ascribe the macroscopic properties of solids to the underlying microscopic structure. Silicon carbide is almost as hard and brittle as diamond. The solid state structure of silicon carbide is often described as

Choices:
- a molecular crystal
- a covalent or network crystal
- a metallic crystal
- an ionic crystal


high_school_chemistry

Question: Which of the following processes is an irreversible reaction?

Choices:
- CH4(g) + O2(g) â CO2(g) + H2O(l)
- HCN(aq) + H2O(l) â CN-(aq) + H3O+(aq)
- Al(NO3)3(s) â Al3+(aq) + 3NO3-(aq)
- 2Ag+(aq) + Ti(s) â 2Ag(s) + Ti2+(aq)


high_school_chemistry

Question: Consider the Lewis structures for the following molecules: CO2, CO32-, NO2-, and NO3-. Which molecules are best represented by multiple resonance structures?

Choices:
- CO2 and CO32-
- NO2- and NO3-
- CO32- and NO3-
- CO32-, NO2- and NO3-


high_school_chemistry

Question: When using the ideal gas law, standard conditions for temperature and pressure are

Choices:
- 0 K and 0 torr
- 25 Â°C and 1 atmosphere pressure
- 0 Â°C and 760 torr
- 0 Â°F and 1 atmosphere pressure


high_school_chemistry

Question: NH4+(aq) + NO2- (aq) â N2(g) + 2H2O(l) Increasing the temperature of the above reaction will increase the rate of reaction. Which of the following is NOT a reason that increased temperature increases reaction rate?

Choices:
- The reactants will be more likely to overcome the activation energy.
- The number of collisions between reactant molecules will increase.
- A greater distribution of reactant molecules will have high velocities.
- Alternate reaction pathways become available at higher temperatures.


high_school_chemistry

Question: Identify the BrÃ¸nsted-Lowry conjugate acid-base pair in the following list.

Choices:
- H3O+ and OH-
- H3PO4 and H3PO3
- HC2H3O2 and C2H3O2-
- SO32- and SO22-


high_school_chemistry

Question: Which of the following is expected to be the least soluble in water?

Choices:
- NaBr
- NiSO3
- CrCl3
- Mn(NO3)2


high_school_chemistry

Question: Which following pair of substances can be used to make a buffer solution?

Choices:
- NaCl and HCl
- HC2H3O2 and KC2H3O2
- NaBr and KBr
- HIO3 and KClO3


high_school_chemistry

Question: A 25 g sample of a liquid was heated to 100 Â°C and then quickly transferred to an insulated container holding 100 g of water at 22 Â°C. The temperature of the mixture rose to reach a final temperature of 35 Â°C. Which of the following can be concluded?

Choices:
- The sample temperature changed more than the water temperature did; therefore the sample lost more heat energy than the water gained.
- The sample temperature changed more than the water temperature did, but the sample lost the same amount of heat energy as the water gained.
- The sample temperature changed more than the water temperature did; therefore the CP of the sample must be greater than the CP of the water.
- The final temperature is less than the average starting temperature of the sample and the water; therefore the total energy of the sample and water decreased.


high_school_chemistry

Question: What is the work involved if a gas in a 2.0-liter container at 2.4 atmospheres pressure is allowed to expand against a pressure of 0.80 atmosphere?

Choices:
- -3.2 L atm
- -9.62 L atm
- -4.8 L atm
- +14.4 L atm


high_school_chemistry

Question: Chlorine gas reacts most readily with

Choices:
- toluene
- ethylene
- ethanoic acid
- ethane


high_school_chemistry

Question: The first ionization energy for a neutral atom of chlorine is 1.25 MJ/mol and the first ionization energy for a neutral atom of argon is 1.52 MJ/mol. How would the first ionization energy value for a neutral atom of potassum compare to those values?

Choices:
- It would be greater than both because potassium carries a greater nuclear charge then either chlorine or argon.
- It would be greater than both because the size of a potassium atom is smaller than an atom of either chlorine or argon.
- It would be less than both because there are more electrons in potassium, meaning they repel each other more effectively and less energy is needed to remove one.
- It would be less than both because a valence electron of potassium is farther from the nucleus than one of either chlorine or argon.


high_school_chemistry

Question: PCl3(g) + Cl2(g) â PCl5(g) ÎH = -92.5 kJ/mol In which of the following ways could the reaction above be manipulated to create more product?

Choices:
- Decreasing the concentration of PCl3
- Increasing the pressure
- Increasing the temperature
- None of the above


high_school_chemistry

Question: Which is correct about the calcium atom?

Choices:
- It contains 20 protons and neutrons
- It contains 20 protons and 20 electrons
- It contains 20 protons, neutrons, and electrons
- All atoms of calcium have a mass of 40.078 u


high_school_chemistry

Question: Your supervisor asks you to determine the enthalpy of a certain chemical reaction. Which would you do?

Choices:
- Measure the ÎS and the ÎG for the reaction, and calculate the ÎH from the Gibbs free energy equation.
- Use a bomb calorimeter to measure the heat of the reaction.
- Use a solution calorimeter such as a coffee-cup calorimeter to measure the heat.
- Use a photoelectron spectrometer to measure the energies of all atoms in the compounds, and use Hess's law to add them.


high_school_chemistry

Question: Magnesium has an atomic radius of 160 pm and a first ionization energy of 737 kJ. Based on periodic trends and the data given above, what are the most probable values for the ionization energy and atomic radius of sodium?

Choices:
- 186 pm, 496 kJ/mol
- 186 pm, 898 kJ/mol
- 135 pm, 523 kJ/mol
- 147 pm, 523 kJ/mol