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Recently added practice questions

3341. The time constant of a first order process with resistance R and capacitance C is__________________?
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A. RC

B. R + C

C. R C

D. 1/RC

3342. The time between the examination and death is called_____________?
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A. Late time

B. Calculated period

C. Post-mortem interval

D. None of above

3343. The thrust on the rocket in the absence of gravitational force of attraction is__________________?
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A. constant if the rate of ejected gases is constant

B. not constant

C. constant for short range rocket.

D. Constant
3344. The third proportional to 3.5, 5.6 is:___________?
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A. 4.5

B. 8

C. 6.2

D. 8.96
3345. The third largest city of Pakistan is
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A. Rawalpindi

B. Faisalabad

C. Sialkot

D. Hyderabad

3346. The Third Battle of Panipat was fought between ?
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A. Ahmed Shah and Balaji Baji Rao

B. Akbar and Lal Singh

C. Babur and Ibrahim Lodi

D. Ahmad Shah Abdali and Marathas
3347. The thickness of laminations used in a transformer is usually____________?
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A. 4 mm to 5 mm

B. 14 mm to 15 mm

C. 0.4 mm to 0.5 mm

D. 25 mm to 40 mm

3348. The thickness of bituminous carpet varies from__________________?
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A. 50 to 75 mm

B. 75 to 100 mm

C. 20 to 25 mm

D. 100 to 120 mm

3349. The thermal radiative flux from a surface of emissivity = 0.4 is 22.68 kW/m2. The approximate surface temperature (K) is (Stefan-Boltzmann constant = 5.67 10-8 W/m2.K4) ?
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A. 800

B. 1000

C. 727

D. 1200

3350. The thermal radiation emitted by a body is proportional to Tn, where T is its absolute temperature. The value of n is exactly 4 for__________________?
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A. A black body

B. Black painted bodies only

C. Polished bodies only

D. All bodies
3351. The thermal efficiency of an air/fuel gas preheating recuperator may be as high as _____________ percent?
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A. 65

B. 99

C. 85

D. 50

3352. The thermal efficiency of a gas turbine as compared to a diesel plant is__________________?
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A. less

B. depends on other factors

C. same

D. unpredictably

E. more

3353. The thermal efficiency of a diesel engine is of the order of_________________?
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A. 92%

B. 34%

C. 52%

D. 25%.

E. 68%

3354. The thermal diffusivities for gases are generally_____________________?
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A. same as for the liquids

B. more than those for liquids

C. less than those for liquids

D. more than those for solids

E. dependent on the viscosity

3355. The thermal conductivity of hydrogen is _____________ times that of air?
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A. 2

B. 5

C. 3

D. 7
3356. The theory which is based on the assumption that language originated as a result of the involuntary exclamations of pain, surprise, pleasure or wonder_________________?
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A. The Pooh__pooh theory

B. The Bow__vow theory

C. Ding Dong theory

D. The Gesture theory

3357. The theory that states that a country has a comparative advantage in the production of a product if that country is relatively well endowed with inputs used intensively in the production of that product is the?
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A. Ricardo Malthus theorem

B. Heckscher Ohlin theorem

C. Friedman Samuelson theorem

D. Lucas-Laffer theorem

3358. The theory that states that a country has a comparative advantage in the production of a product if that country is relatively well endowed with inputs used intensively in the production of that product is the?
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A. Heckscher Ohlin theorem

B. Friedman Samuelson theorem

C. Lucas-Laffer theorem

D. Ricardo Malthus theorem

3359. The theory of suggests that government can assist domestic companies in capturing economic profits from foreign competitors ?
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A. Strategic trade policy

B. export promotion policy

C. international dumping

D. countervailing duties

3360. The theory of Scientific Socialism is largely based on the teachings of: ________?
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A. Chou-En Lai

B. Karl Marx

C. Stalin

D. Lenin

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