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Dear candidates you will find MCQ questions of Thermal Engineering here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 51.43K Points
Coach

Q. 1) For water, at pressures below atmospheric,

(A) melting point rises slightly and boiling point drops markedly
(B) melting point rises markedly and boiling point drops markedly
(C) melting point drops slightly and boiling point drops markedly
(D) melting point drops slightly and boiling point drops slightly
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Mr. Dubey • 51.43K Points
Coach

Q. 2) At very low temperature, the melting and boiling temperatures become equal. This temperature is

(A) 373°K
(B) 273.16°K
(C) 303°K
(D) 0°K.
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Mr. Dubey • 51.43K Points
Coach

Q. 3) The critical pressure at which latent heat of vaporisation is zero is

(A) 225.65 kgf/cm2
(B) 273 kgf/cm2
(C) 100 kgf/cm2
(D) 1 kgf/cm2
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Mr. Dubey • 51.43K Points
Coach

Q. 4) The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is

(A) less
(B) more
(C) equal
(D) may be less or more depending on temperature
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Mr. Dubey • 51.43K Points
Coach

Q. 5) The saturation temperature of steam with increase in pressure increases

(A) linearly
(B) rapidly first and then slowly
(C) slowly first and then rapidly
(D) inversely
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Mr. Dubey • 51.43K Points
Coach

Q. 6) Heating of dry steam above saturation temperature is known as

(A) enthalpy
(B) superheating
(C) supersaturation
(D) latent heat
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Mr. Dubey • 51.43K Points
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Q. 7) Superheating of steam is done at

(A) constant volume
(B) constant temperature
(C) constant pressure
(D) constant entropy
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Mr. Dubey • 51.43K Points
Coach

Q. 8) Sublimation region is the region where

(A) solid and vapour phases are in equi-librium
(B) solid and liquid phases are in equilibrium
(C) liquid and vapour phases are in equilibrium
(D) solid, liquid and vapour phases are in equilibrium
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Mr. Dubey • 51.43K Points
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Q. 9) One kg of steam sample contains 0.8 kg dry steam; it's dryness fraction is

(A) 0.2
(B) 0.8
(C) 1.0
(D) 0.6
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Mr. Dubey • 51.43K Points
Coach

Q. 10) If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by

(A) throttling calorimeter
(B) separating calorimeter
(C) combined separating and throttling calorimeter
(D) bucket calorimeter
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