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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The condition of refrigerant after passing through the condenser in a vapour compression system is

Superheated vapour
Wet vapour
Dry saturated vapour
Saturated liquid

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Cools below 0°C
Requires little power consumption
Gives quiet operation
Gives noisy operation

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Refrigeration and Air Conditioning
The desirable property of a refrigerant is

Low boiling point
High latent heat of vaporisation
All of these
High critical temperature

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Refrigeration and Air Conditioning
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

Moist air
Saturated air
Specific humidity
Dry air

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Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Lower
Same
None of these
Higher

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Refrigeration and Air Conditioning
The relative coefficient of performance is equal to

(Theoretical C.O.P.)/ (Actual C.O.P.)
(Actual C.O.P.) /(Theoretical C.O.P.)
None of these
(Actual C.O.P.) × (Theoretical C.O.P.)

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