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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Gas liquefaction
Domestic refrigerators
Commercial refrigerators
Air conditioning

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

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Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Axial
Miniature sealed unit
Piston type reciprocating
Centrifugal

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 + C.O.P
1 - (1/C.O.P)
1 - C.O.P.
1 + (1/C.O.P)

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

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Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Dehumidification
Cooling and dehumidification
Humidification
Heating and humidification

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MORE MCQ ON Refrigeration and Air Conditioning

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