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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Most of the domestic refrigerators work on the following refrigeration system

Vapour absorption
Vapour compression
Carnot cycle
Electrolux refrigerator

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

R-12
Ammonia
CO?
All of these

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Specific humidity
Wet bulb temperature
Relative humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
The condition of refrigerant after passing through the condenser in a vapour compression system is

Wet vapour
Dry saturated vapour
Saturated liquid
Superheated vapour

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Domestic refrigerators
Commercial refrigerators
Gas liquefaction
Air conditioning

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Refrigeration and Air Conditioning
A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

2.33
1.33
4.33
3.33

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MORE MCQ ON Refrigeration and Air Conditioning

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