Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

26. 

Dehydration is the process of removing water vapour from the surrounding air.

A. True
B. False

Answer: Option A

Explanation:

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27. 

The cooling of air, without any change in its specific humidity, is known as sensible cooling.

A. Correct
B. Incorrect

Answer: Option A

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28. 

The capacity of the cooling tower and spray ponds __________ as the wet bulb temperature of air decreases.

A. increases
B. decreases

Answer: Option A

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29. 

A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

A. dry air
B. moist air
C. saturated air
D. specific humidity

Answer: Option C

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30. 

The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which each constituent would exert, if it occupied the same space by itself. This statement is called

A. Kinetic theory of gases
B. Newton's law of gases
C. Dalton's law of partial pressures
D. Avogadro's hypothesis

Answer: Option C

Explanation:

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