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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m/h
m²/h
m/hK
m²/hK

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Refrigeration and Air Conditioning
One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice

In 1 hour
In 12 hours
In 1 minute
In 24 hours

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Decreases
None of these
Remains constant
Increases

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Refrigeration and Air Conditioning
The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called

Coefficient of performance of refrigeration
Coefficient of performance of heat pump
Relative coefficient of performance
Refrigerating efficiency

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-11
Ammonia
R-12
R-22

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Refrigeration and Air Conditioning
Rating of a domestic refrigerator is of the order of

10 tons
40 tons
5 tons
0.1 ton

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MORE MCQ ON Refrigeration and Air Conditioning

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