Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning

41. 

During sensible heating of air __________ decreases.

A. wet bulb temperature
B. relative humidity
C. dry bulb temperature
D. specific humidity

Answer: Option B

Explanation:

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42. 

The overall coefficient of heat transfer is used in problems of

A. conduction
B. convection
C. radiation
D. conduction and convection

Answer: Option D

Explanation:

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43. 

The boiling point of R-12 is about - 30°C.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

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