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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Depends upon the make
Is more than 1
Is equal to 1
Is less than 1

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Refrigeration and Air Conditioning
A bootstrap air cooling system has

Two heat exchangers
Three heat exchangers
Four heat exchangers
One heat exchanger

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Refrigeration and Air Conditioning
The sub-cooling in a refrigeration cycle

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

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Refrigeration and Air Conditioning
If a gas is to be liquefied, its temperature must be

Reduced to a value below its critical temperature
Equal to critical temperature
Increased to a value above its critical temperature
None of these

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Refrigeration and Air Conditioning
During adiabatic saturation process on unsaturated air ___ remains constant.

Dry bulb temperature
Relative humidity
Wet bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
The superheating in a refrigeration cycle

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

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