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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
Atmospheric pressure
56 bars
Slightly above atmospheric pressure

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Refrigeration and Air Conditioning
The humidification process, on the psychrometric chart is shown by

Vertical line
Inclined line
Horizontal line
Curved line

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Refrigeration and Air Conditioning
The pressure at the inlet of a refrigerant compressor is called

Critical pressure
Discharge pressure
Back pressure
Suction pressure

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Refrigeration and Air Conditioning
In a vapour compression cycle, the refrigerant immediately after expansion valve is

Liquid
Wet vapour
Saturated liquid
Sub-cooled liquid

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Refrigeration and Air Conditioning
The superheating in a refrigeration cycle

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

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

Axial
Miniature sealed unit
Centrifugal
Piston type reciprocating

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MORE MCQ ON Refrigeration and Air Conditioning

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