Q. For water, at pressures below atmospheric,
✅ Correct Answer: (A)
melting point rises slightly and boiling point drops markedly
Thermal Engineering MCQs | Page - 1
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.
Q. At very low temperature, the melting and boiling temperatures become equal. This temperature is
✅ Correct Answer: (B)
273.16°K
Q. The critical pressure at which latent heat of vaporisation is zero is
✅ Correct Answer: (A)
225.65 kgf/cm2
Q. The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is
✅ Correct Answer: (A)
less
Q. The saturation temperature of steam with increase in pressure increases
✅ Correct Answer: (B)
rapidly first and then slowly
Q. Heating of dry steam above saturation temperature is known as
✅ Correct Answer: (B)
superheating
Q. Superheating of steam is done at
✅ Correct Answer: (C)
constant pressure
Q. Sublimation region is the region where
✅ Correct Answer: (A)
solid and vapour phases are in equi-librium
Q. One kg of steam sample contains 0.8 kg dry steam; it's dryness fraction is
✅ Correct Answer: (B)
0.8
Q. If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by
✅ Correct Answer: (A)
throttling calorimeter
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