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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

CO?
All of these
R-12
Ammonia

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Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

At which refrigerant gas becomes liquid
Of freezing zone
Of evaporator
Of cooling medium

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

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

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Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Remains constant
Decreases
None of these
Increases

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Refrigeration and Air Conditioning
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

Saturated air
Moist air
Specific humidity
Dry air

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Brass
Aluminium
Steel
Copper

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MORE MCQ ON Refrigeration and Air Conditioning

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