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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The coefficient of performance of Heat Pump is always ___ one.

Equal to
None of the listed here
Less than
Greater than

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

6
5
0.2
1.2

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Low side float valve
High side float valve
Thermostatic expansion valve
Automatic expansion valve

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Refrigeration and Air Conditioning
The mass of water vapour present in __________ is called absolute humidity.

1 m3 of dry air
1 kg of dry air
1 kg of wet air
1 m3 of water

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Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m/h
m²/h
m²/hK
m/hK

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Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Cooling and dehumidification
Dehumidification
Heating and humidification
Humidification

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MORE MCQ ON Refrigeration and Air Conditioning

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