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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

Reversed Carnot cycle
None of these
Carnot cycle

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Refrigeration and Air Conditioning
In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at

Low pressure side near receiver
Suction of compressor
Delivery of compressor
High pressure side close to receiver

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

0.2
1.2
5
6

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Refrigeration and Air Conditioning
The advantage of dry compression is that

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

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Refrigeration and Air Conditioning
During sensible cooling of air, specific humidity

Remains constant
Decreases
Increases
None of the listed here

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Refrigeration and Air Conditioning
The desirable property of a refrigerant is

High critical temperature
All of these
High latent heat of vaporisation
Low boiling point

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MORE MCQ ON Refrigeration and Air Conditioning

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