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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a vapour compression cycle, the refrigerant immediately after expansion valve is

Wet vapour
Saturated liquid
Sub-cooled liquid
Liquid

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Refrigeration and Air Conditioning
Highest pressure encountered in a refrigeration system should be

Much below critical pressure
Near critical pressure
Critical pressure of refrigerant
Much above critical pressure

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Refrigeration and Air Conditioning
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

Absolute humidity
Humidity ratio
Relative humidity
Degree of saturation

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Refrigeration and Air Conditioning
The value of C.O.P in vapour compression cycle is usually

Equal to unity
Always more than unity
Any one of the above
Always less than unity

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-75.2°C
-56.6°C
-135.8°C
-77.7°C

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Refrigeration and Air Conditioning
The relative coefficient of performance is

Actual COP/theoretical COP
None of these
Theoretical COP/actual COP
Actual COP × theoretical COP

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MORE MCQ ON Refrigeration and Air Conditioning

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