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Refrigeration and Air Conditioning

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

Suction pressure
Critical pressure
Discharge pressure
Back pressure

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

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

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Ammonia
Aqua-ammonia
Freon
Water

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

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

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

100
Zero
20
50

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Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Decreases
None of these
Remains constant
Increases

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MORE MCQ ON Refrigeration and Air Conditioning

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