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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during heating and humidification process.

Decreases
Remains constant
None of these
Increases

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Refrigeration and Air Conditioning
In a reversed Brayton cycle, the heat is absorbed by the air during

Constant pressure expansion process
Isentropic expansion process
Constant pressure cooling process
Isentropic compression process

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Refrigeration and Air Conditioning
Most of the domestic refrigerators work on the following refrigeration system

Electrolux refrigerator
Carnot cycle
Vapour absorption
Vapour compression

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Refrigeration and Air Conditioning
The reduced ambient air cooling system has

Two cooling turbines and one heat exchanger
One cooling turbine and one heat exchanger
One cooling turbine and two heat exchangers
Two cooling turbines and two heat exchangers

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Refrigeration and Air Conditioning
The power per tonne of refrigeration is

3.5/C.O.P.
O.P/3.5
3.5 × C.O.P.
None of these

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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.

Same
Higher
None of these
Lower

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