Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

41.
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called
humidity ratio
relative humidity
absolute humidity
degree of saturation
Answer: Option
Explanation:
No answer description is available. Let's discuss.

42.
The transfer of heat by molecular collision is smallest in
solids
liquids
gases
none of these
Answer: Option
Explanation:
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43.
During dehumidification process, the relative humidity
remains constant
increases
decreases
Answer: Option
Explanation:
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44.
The space between the two walls of a thermos flask is evacuated because vacuum is a __________ conductor of heat.
good
bad
Answer: Option
Explanation:
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45.
The ratio of actual heat transfer to the maximum possible heat transfer is known as heat exchanger effectiveness.
Agree
Disagree
Answer: Option
Explanation:
No answer description is available. Let's discuss.