242) Most air cooled condensers are designed to operate with a temperature difference of

5 Degree Centigrade

8 Degree Centigrade

14 Degree Centigrade

22 Degree Centigrade

Answer is:

14 Degree Centigrade

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

For more MCQ's Click Here

Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

243) In a reversed Brayton cycle, the heat is absorbed by the air during

isentropic compression process

constant pressure cooling process

isentropic expansion process

constant pressure expansion process

Answer is:

constant pressure expansion process

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

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

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

For more MCQ's Click Here

242) Most air cooled condensers are designed to operate with a temperature difference of

14 Degree Centigrade

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

243) In a reversed Brayton cycle, the heat is absorbed by the air during

constant pressure expansion process

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

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

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

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 + 1

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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