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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
An Electrolux refrigerator is called a ___ absorption system.

None of the listed here
Two fluids
Three fluids
Single fluid

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Refrigeration and Air Conditioning
The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Will remain unaffected
Will be lower
May be higher or lower depending upon the nature of non-condensable gases
Will be higher

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Refrigeration and Air Conditioning
The sub-cooling in a refrigeration cycle

None of these
Does not alter C.O.P.
Decreases C.O.P.
Increases C.O.P.

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Refrigeration and Air Conditioning
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Degree of saturation
Humidity ratio
Relative humidity
Absolute humidity

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Refrigeration and Air Conditioning
Highest temperature encountered in refrigeration cycle should be

Much below critical temperature
Near critical temperature of refrigerant
At critical Temperature
Above critical temperature

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

Ammonia
R-11
R-22
R-12

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