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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Aluminium
Brass
Copper
Steel

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Refrigeration and Air Conditioning
The relative coefficient of performance is

Actual COP × theoretical COP
Actual COP/theoretical COP
None of these
Theoretical COP/actual COP

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

CO2
Ammonia
Freon-11
Freon-22

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Refrigeration and Air Conditioning
Air refrigerator works on

Reversed Carnot cycle
Bell Coleman cycle
Both (A) and (B)
None of these

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Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

None of these
Non-frosting evaporator
Defrosting evaporator
Frosting evaporator

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Steel
Aluminium
Copper
Brass

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MORE MCQ ON Refrigeration and Air Conditioning

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