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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Which of the following is not a desirable property of a refrigerant?

Large latent heat
High risibility with oil
Good electrical conductor
Low boiling point

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Refrigeration and Air Conditioning
The advantage of dry compression is that

All of these
It permits complete evaporation in the evaporator
It permits higher speeds to be used
It results in high volumetric and mechanical efficiency

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Refrigeration and Air Conditioning
Carbon dioxide is

All of the listed here
Odourless
Colourless
Non-flammable

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Smaller
Equal
Smaller/bigger depending on capacity
Bigger

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Refrigeration and Air Conditioning
The pressure at the inlet of a refrigerant compressor is called

Critical pressure
Back pressure
Suction pressure
Discharge pressure

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Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Evaporation
Compression
Expansion
Condensation

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MORE MCQ ON Refrigeration and Air Conditioning

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