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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In case of sensible cooling of air, the coil efficiency is given by

1 + B.P.F.
P.F. - 1
1/ B.P.F.
1 - B.P.F.

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Refrigeration and Air Conditioning
During heating and humidification, the final relative humidity of air

None of the listed here
Is higher than that of the entering air
Is lower than that of the entering air
Can be lower or higher than that of the entering air

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Refrigeration and Air Conditioning
The vapour pressure of refrigerant should be

Equal to atmospheric pressure
Lower than atmospheric pressure
Could be anything
Higher than atmospheric pressure

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Refrigeration and Air Conditioning
The lower horizontal line of the refrigeration cycle plotted on pressure-enthalpy diagram represents

Evaporation of the refrigerant liquid
Compression of the refrigerant vapour
Condensation of the refrigerant vapour
Metering of the refrigerant liquid

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Refrigeration and Air Conditioning
The coefficient of performance of Heat Pump is always ___ one.

None of the listed here
Equal to
Greater than
Less than

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Refrigeration and Air Conditioning
The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to

Yellow
Red
Orange
Bright green

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MORE MCQ ON Refrigeration and Air Conditioning

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