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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The COP of a domestic refrigerator

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

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-12
R-22
Ammonia
R-11

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

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

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Expansion valve
Compressor
Evaporator
Condenser

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Refrigeration and Air Conditioning
The mass of water vapour present in __________ is called absolute humidity.

1 m3 of dry air
1 kg of wet air
1 kg of dry air
1 m3 of water

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Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

420 kJ/ min
21 kJ/ min
840 kJ/ min
210 kJ/ min

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MORE MCQ ON Refrigeration and Air Conditioning

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