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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The relative coefficient of performance is

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

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Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

1
2.15
5.12
1.25

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Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

Low weight per tonne of refrigeration
Low temperature at high altitudes
Higher coefficient of performance
High heat transfer rate

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Ice at 4°C
Solid and dry ice
Mixture of ice and water under equilibrium conditions
Water at 0°C

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

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

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Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

Reversed Carnot cycle
Carnot cycle
None of these

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MORE MCQ ON Refrigeration and Air Conditioning

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