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Refrigeration and Air Conditioning

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

Decreases
Remains constant
None of these
Increases

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Same as
None of these
Higher than
Lower than

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Refrigeration and Air Conditioning
Refrigeration in aeroplanes usually employs the following refrigerant

Freon-11
Freon-22
Air
CO2

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Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

Frosting evaporator
Non-frosting evaporator
None of these
Defrosting evaporator

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Refrigeration and Air Conditioning
Which of the following refrigerant is highly toxic and flammable?

Carbon dioxide
Sulphur dioxide
Ammonia
R-12

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Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

Same
More
Less
More/less depending on rating

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MORE MCQ ON Refrigeration and Air Conditioning

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