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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Condenser
Evaporator
Expansion valve
Compressor

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Refrigeration and Air Conditioning
Which of the following is not a desirable property of a refrigerant?

Good electrical conductor
Low boiling point
High risibility with oil
Large latent heat

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Refrigeration and Air Conditioning
Which of the following refrigerant has the highest freezing point.

R-12
Ammonia
Sulphur dioxide
Carbon dioxide

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Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

Power per TR is low
Mass of refrigerant circulated in the system is low
Mass of the refrigeration equipment is low
System has high C.O.P.

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Refrigeration and Air Conditioning
In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at

Suction of compressor
High pressure side close to receiver
Low pressure side near receiver
Delivery of compressor

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Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

High
Any value
Low
Optimum

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MORE MCQ ON Refrigeration and Air Conditioning

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