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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Room air conditioners
Domestic refrigerators
Water coolers
All of these

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Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

(T₁ - T₂)/T₁
(T₂ - T₁)/T₁
T₁/(T₂ - T₁)
T₂/(T₂ - T₁)

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Condenser
Compressor
Evaporator
Expansion valve

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

Increases power required per ton of refrigeration
Lowers compressor capacity because vapour is lighter
Lowers evaporation temperature
All of these

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

210 kJ/min
21 kJ/min
420 kJ/min
620 kJ/min

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Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

3
43834
43833
4

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MORE MCQ ON Refrigeration and Air Conditioning

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