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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Air conditioning
Domestic refrigerators
Commercial refrigerators
Gas liquefaction

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Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Equal to
More than
Less than
None of these

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Refrigeration and Air Conditioning
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is

Reversed Otto cycle
Reversed Brayton cycle
Reversed Carnot cycle
Reversed Joule cycle

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Refrigeration and Air Conditioning
The value of C.O.P in vapour compression cycle is usually

Always more than unity
Any one of the above
Equal to unity
Always less than unity

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Refrigeration and Air Conditioning
A bootstrap air cooling system has

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

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Refrigeration and Air Conditioning
The refrigerant supplied to a compressor must be

None of these
Superheated vapour refrigerant
A mixture of liquid and vapour refrigerant
Dry saturated liquid refrigerant

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MORE MCQ ON Refrigeration and Air Conditioning

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