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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The temperature of ammonia after compression in a vapour compression system is

None of these
20 to 50°C
70 to 110°C
50 to 70°C

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

None of these
Decreases
Remains constant
Increases

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Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Stirling
Carnot
Bell Coleman
Ericson

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Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Equal to
Less than
More than
None of these

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Refrigeration and Air Conditioning
The freezing point of R-12 is

-95.2°C
-107.7°C
-86.6°C
-135.8°C

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Refrigeration and Air Conditioning
The boiling point of ammonia is

-77.7°C
-30°C
-10.5°C
-33.3°C

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MORE MCQ ON Refrigeration and Air Conditioning

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