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Refrigeration and Air Conditioning

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

R-12
Ammonia
R-22
R-11

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Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when it is not affected by the moisture present in the air, is called

Wet bulb temperature
Dry bulb temperature
None of these
Dew point temperature

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Remains constant
Decreases
None of these
Increases

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Refrigeration and Air Conditioning
The cooling system used for supersonic aircrafts and rockets is

Bootstrap air cooling system
Regenerative air cooling system
Reduced ambient air cooling system
Simple air cooling system

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Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Centrifugal
Miniature sealed unit
Axial
Piston type reciprocating

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Halocarbon refrigerants
Hydrocarbon refrigerants
Inorganic refrigerants
Zoetrope refrigerants

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MORE MCQ ON Refrigeration and Air Conditioning

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