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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Increases
Decreases
Remains constant
None of these

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Refrigeration and Air Conditioning
In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor)

1 - B. P.F.
1 + B.P.F.
P.F. - 1
1/ B.P.F.

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Refrigeration and Air Conditioning
The process, generally used in summer air conditioning to cool and dehumidify the air, is called

Cooling and dehumidification
Dehumidification
Heating and humidification
Humidification

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Refrigeration and Air Conditioning
The condition of refrigerant as it leaves the compressor in a vapour compression system is

Dry saturated vapour
Wet vapour
Saturated liquid
Superheated vapour

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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

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

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Refrigeration and Air Conditioning
Aqua ammonia is used as refrigerant in the following type of refrigeration system

Compression
Indirect
Absorption
Direct

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MORE MCQ ON Refrigeration and Air Conditioning

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