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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The COP of a domestic refrigerator

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

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Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

1
2.15
5.12
1.25

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-135.8°C
-77.7°C
-75.2°C
-56.6°C

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

All of these
Halide torch
Sulphur sticks
Soap and water

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Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

remains same
depends on other factors
increases
decreases

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Dew point depression
Degree of saturation
Wet bulb depression
Dry bulb depression

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MORE MCQ ON Refrigeration and Air Conditioning

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