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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

More
Equally
Unpredictable
Less

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Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

6
1.2
0.2
5

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Refrigeration and Air Conditioning
The relative coefficient of performance is

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

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Refrigeration and Air Conditioning
The bank of tubes at the back of domestic refrigerator is

Condenser tubes
Evaporator tubes
Refrigerant cooling tubes
Capillary tubes

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Refrigeration and Air Conditioning
An important characteristic of absorption system of refrigeration is

quiet operation
cooling below 0°C
noisy operation
very little power consumption

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Refrigeration and Air Conditioning
For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

High
Anything
Equal
Small

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MORE MCQ ON Refrigeration and Air Conditioning

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