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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The leakage in a refrigeration system using Freon is detected by

All of these
Halide torch
Soap and water
Sulphur sticks

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Refrigeration and Air Conditioning
The higher temperature in vapour compression cycle occurs at

Compressor discharge
Expansion valve
Receiver
Evaporator

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

-135.8°C
-107.7°C
-95.2°C
-86.6°C

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

None of these
Same as
Lower than
Higher than

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

Equal to
Less than
Greater than
None of these

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Refrigeration and Air Conditioning
One of the purposes of sub cooling the liquid refrigerant is to

Ensure that only liquid and not the vapour enters the expansion (throttling) valve
Increase cooling effect
Reduce compressor overheating
Reduce compressor discharge temperature

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MORE MCQ ON Refrigeration and Air Conditioning

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