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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Domestic refrigerators
Water coolers
Room air conditioners
All of these

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

0.622 Pv/ (Pb - Pv)
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
None of these
μ/[1 - (1 - μ) (Ps/Pb)]

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Refrigeration and Air Conditioning
The evaporator changes the low pressure liquid refrigerant from the expansion valve into

Low pressure liquid and vapour refrigerant
Low pressure vapour refrigerant
None of these
High pressure liquid refrigerant

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Refrigeration and Air Conditioning
A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called

Automatic expansion valve
Low side float valve
High side float valve
Thermostatic expansion valve

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

Any value
Optimum
Low
High

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Refrigeration and Air Conditioning
The index which correlates the combined effects of air temperature, relative humidity and air velocity on the human body, is known as

Dew point temperature
None of the listed here
Mean radiant temperature
Effective temperature

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MORE MCQ ON Refrigeration and Air Conditioning

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