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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

420 kJ/ min
840 kJ/ min
210 kJ/ min
21 kJ/ min

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Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

More
Less
Same
None of these

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Compressor and condenser
Condenser and expansion valve
Compressor and evaporator
Expansion valve and evaporator

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Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

Low weight per tonne of refrigeration
Higher coefficient of performance
Low temperature at high altitudes
High heat transfer rate

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Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

Less
More/less depending on rating
Same
More

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

Dehumidification
Humidification
Cooling and dehumidification
Heating and humidification

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MORE MCQ ON Refrigeration and Air Conditioning

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