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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The higher temperature in vapour compression cycle occurs at

Receiver
Expansion valve
Evaporator
Compressor discharge

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Carnot
Rankine
Reversed Rankine
Reversed Carnot

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Refrigeration and Air Conditioning
Air refrigeration operates on

Rankine’s cycle
Brayton cycle
Carnot cycle
Reversed Carnot cycle

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Refrigeration and Air Conditioning
R-12 is generally preferred over R-22 in deep freezers since

It is miscible with oil over large range of temperatures
It gives higher coefficient of performance
It has low operating pressures
All of these

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Refrigeration and Air Conditioning
The temperature of ammonia after compression in a vapour compression system is

50 to 70°C
None of these
70 to 110°C
20 to 50°C

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Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Lower
Higher
None of these
Same

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MORE MCQ ON Refrigeration and Air Conditioning

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