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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Allowable pressure on high pressure side or ammonia absorption system is of the order of

24 bars
56 bars
Atmospheric pressure
Slightly above atmospheric pressure

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

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

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Inorganic refrigerants
Zoetrope refrigerants
Hydrocarbon refrigerants
Halocarbon refrigerants

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Refrigeration and Air Conditioning
The lowest thermal diffusivity is of

Iron
Rubber
Aluminium
Lead

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Refrigeration and Air Conditioning
The C.O.P. of a refrigerator working on a reversed Carnot cycle is (where T₁ = Lowest absolute temperature, and T₂ = Highest absolute temperature)

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

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

Evaporator
None of these
Condenser
Absorber

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MORE MCQ ON Refrigeration and Air Conditioning

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