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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

0.67
0.6
1.5
0.3

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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
Dew point temperature
None of these

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Refrigeration and Air Conditioning
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

1 kW
4 kW
3 kW
2 kW

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

All of these
Sulphur sticks
Halide torch
Soap and water

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Refrigeration and Air Conditioning
The ratio of heat extracted in the refrigerator to the work-done on the refrigerant is called

Coefficient of performance of heat pump
Coefficient of performance of refrigeration
Refrigerating efficiency
Relative coefficient of performance

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Refrigeration and Air Conditioning
In a domestic vapour compression refrigerator, the refrigerant commonly used is

Ammonia
R-12
CO?
All of these

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MORE MCQ ON Refrigeration and Air Conditioning

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