Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

161) When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by

Answer is:

lowering the higher temperature

162) The refrigerant carbon dioxide is not widely used because of its __________ power require ments per tonne of refrigeration and high operating pressures.

Answer is:

high

163) The by-pass factor of a cooling coil decreases with

Answer is:

decrease in fin spacing and increase in number of rows

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

Answer is:

Right

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

Answer is:

Correct

30
31
32
33
34
35
36