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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

Low
Optimum
Any value
High

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

To the left of saturated liquid line
To the right of saturated liquid line
Between the saturated liquid line and saturated vapour line
None of these

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Refrigeration and Air Conditioning
The COP of a domestic refrigerator

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

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Refrigeration and Air Conditioning
The process, generally used in summer air conditioning to cool and dehumidify the air, is called

Humidification
Cooling and dehumidification
Dehumidification
Heating and humidification

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Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

Same
More
None of these
Less

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Refrigeration and Air Conditioning
The boiling point of ________ is 10.5°C.

Carbon dioxide
R-12
Ammonia
Sulphur dioxide

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