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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-75.2°C
-56.6°C
-77.7°C
-135.8°C

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Refrigeration and Air Conditioning
If a gas is to be liquefied, its temperature must be

Reduced to a value below its critical temperature
Equal to critical temperature
None of these
Increased to a value above its critical temperature

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

R-22
R-11
Ammonia
R-12

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Refrigeration and Air Conditioning
A bootstrap air cooling system has

Three heat exchangers
Four heat exchangers
One heat exchanger
Two heat exchangers

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Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.5
0.75
0.25
0.1

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MORE MCQ ON Refrigeration and Air Conditioning

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