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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Decreases
None of these
Remains constant
Increases

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Refrigeration and Air Conditioning
The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

Unpredictable
More
Less
Equally

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

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

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

All of these
Work done by compressor
Enthalpy increase in compressor
Heat of compression

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Refrigeration and Air Conditioning
A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be

Dirty condenser surface
All of these
Lack of cooling water
Water temperature being high

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Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

decreases
increases
depends on other factors
remains same

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MORE MCQ ON Refrigeration and Air Conditioning

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