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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Degree of saturation
Wet bulb depression
Dry bulb depression
Dew point depression

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Refrigeration and Air Conditioning
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

4 kW
1 kW
3 kW
2 kW

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Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Condensation
Compression
Evaporation
Expansion

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Refrigeration and Air Conditioning
The power per tonne of refrigeration is

O.P/3.5
3.5 × C.O.P.
3.5/C.O.P.
None of these

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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

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

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Refrigeration and Air Conditioning
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Remain unaffected
Increase
Decrease
May increase or decrease depending on the type of refrigerant used

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MORE MCQ ON Refrigeration and Air Conditioning

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