Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

181) The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Answer is:

degree of saturation

182) For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Answer is:

less than

183) During dehumidification process, __________ remains constant.

Answer is:

dry bulb temperature

184) The value of the wave length for maximum emissive power is given by

Answer is:

Wein's law

185) Emissivity of a body will be equal to its absorptivity at all temperatures.

Answer is:

No

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