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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

depends on other factors
remains same
increases
decreases

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

Ammonia
Freon-22
Freon-11
CO2

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

Increases
Decreases
None of these
Remains constant

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Freon
Aqua-ammonia
Water
Ammonia

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Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Depends upon the make
Is equal to 1
Is less than 1
Is more than 1

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

Heat of compression
All of these
Enthalpy increase in compressor
Work done by compressor

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MORE MCQ ON Refrigeration and Air Conditioning

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