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Engineering
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ME Set-1
Heat Transfer Refrigeration and Air Conditioning
221

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

221) The unit of overall coefficient of heat transfer is

W/m²K

W/m²

W/mK

W/m

Answer is:

W/m²K

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

222) Most thermostatic expansion valves are set for a superheat of

5 Degree Centigrade

10 Degree Centigrade

15 Degree Centigrade

20 Degree Centigrade

Answer is:

5 Degree Centigrade

223) For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is

reciprocating

rotating

centrifugal

screw

Answer is:

centrifugal

224) The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

humidity ratio

relative humidity

absolute humidity

degree of saturation

Answer is:

relative humidity

225) The transfer of heat by molecular collision is smallest in

solids

liquids

gases

none of these

Answer is:

gases

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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