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Engineering
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ME Set-1
Heat Transfer Refrigeration and Air Conditioning
244

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

244) Wet bulb temperature is the temperature of air recorded by a thermometer, when

it is not effected by the moisture present in the air

its bulb is surrounded by a wet cloth exposed to the air

the moisture present in it begins to condense

none of the above

Answer is:

its bulb is surrounded by a wet cloth exposed to the air

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

245) A device used for transfering heat from one fluid to another is called heat exchanger.

Right

Wrong

Answer is:

Right

246) The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by

(C.O.P.)_P = (C.O.P.)_R + 2

(C.O.P.)_P = (C.O.P.)_R + 1

(C.O.P)_P = (C.O.P)_R - 1

(C.O.P)_P = (C.O.P)_R

Answer is:

(C.O.P.)_P = (C.O.P.)_R + 1

247) The temperature below which a gas is always liquified, is known as critical temperature.

Correct

Incorrect

Answer is:

Incorrect

248) A Bell Coleman refrigerator working on dense air system as compared to open air system, for the same range of temperature, results in higher coefficient of performance.

Agree

Disagree

Answer is:

Agree

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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