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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

CO2
Freon-11
Ammonia
Freon-22

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

Soap and water
All of these
Halide torch
Sulphur sticks

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

0.1 to 0.3 TR
5 to 7 TR
3 to 5 TR
1 to 3 TR

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Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

Mass of refrigerant circulated in the system is low
System has high C.O.P.
Power per TR is low
Mass of the refrigeration equipment is low

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Refrigeration and Air Conditioning
The evaporator changes the low pressure liquid refrigerant from the expansion valve into

Low pressure vapour refrigerant
High pressure liquid refrigerant
Low pressure liquid and vapour refrigerant
None of these

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

-107.7°C
-135.8°C
-95.2°C
-86.6°C

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MORE MCQ ON Refrigeration and Air Conditioning

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