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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The sub-cooling in a refrigeration cycle

Does not alter C.O.P.
Decreases C.O.P.
Increases C.O.P.
None of these

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Refrigeration and Air Conditioning
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Evaporator
Condenser
None of these
Absorber

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Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

CO?
All of these
R-12
Ammonia

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

Other factors decide C.O.P
Decreases C.O.P
O.P remains unaltered
Increases C.O.P

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Refrigeration and Air Conditioning
The vapour pressure of refrigerant should be

Equal to atmospheric pressure
Higher than atmospheric pressure
Lower than atmospheric pressure
Could be anything

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Refrigeration and Air Conditioning
Pick up the correct statement about giving up of heat from one medium to other in ammonia absorption system

Ammonia vapours to weak solution
Strong solution to ammonia vapour
Weak solution to strong solution
Strong solution to weak solution

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MORE MCQ ON Refrigeration and Air Conditioning

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