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ME Set-1
Heat Transfer Refrigeration and Air Conditioning
152

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

152) The lowest thermal diffusivity is of

iron

lead

aluminium

rubber

Answer is:

rubber

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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Related Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

153) A low wet bulb temperature indicates very __________ humidity.

low

high

equal

none of these

Answer is:

low

154) The operating temperature of a cold storage is - 2 Degree Centigrade. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40 Degree Centigrade. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant workin

1.86 kW

3.72 kW

7.44 kW

18.6 kW

Answer is:

18.6 kW

155) In chemical dehumidification process,

dew point temperature decreases

wet bulb temperature decreases

dry bulb temperature increases

all of these

Answer is:

all of these

Explanation:

In chemical dehumidification process,
* dew point temperature decreases
* wet bulb temperature decreases
* dry bulb temperature increases

156) A one tonne refrigerating machine means that

one tonne is the total mass of machine

one tonne refrigerant is used

one tonne of water can be converted into ice

one tonne of ice when melts from and at 0 Degree Centigrade in 24 hours, the refrigeration effect is equivalent to 210 kJ/min

Answer is:

one tonne of ice when melts from and at 0 Degree Centigrade in 24 hours, the refrigeration effect is equivalent to 210 kJ/min

Heat Transfer Refrigeration and Air Conditioning MCQ with Answers

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