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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The condition of refrigerant as it leaves the compressor in a vapour compression system is

Superheated vapour
Dry saturated vapour
Wet vapour
Saturated liquid

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Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Domestic refrigerators
All of these
Room air conditioners
Water coolers

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

Freon-22
Freon-11
Ammonia
CO2

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Refrigeration and Air Conditioning
When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be

Negative
None of the listed here
Zero
Positive

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Refrigeration and Air Conditioning
R-12 is generally preferred over R-22 in deep freezers since

It has low operating pressures
It is miscible with oil over large range of temperatures
It gives higher coefficient of performance
All of these

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Refrigeration and Air Conditioning
The pressure at the outlet of a refrigerant compressor is called

Suction pressure
Critical pressure
Discharge pressure
Back pressure

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MORE MCQ ON Refrigeration and Air Conditioning

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