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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
One of the purposes of sub cooling the liquid refrigerant is to

Increase cooling effect
Reduce compressor discharge temperature
Ensure that only liquid and not the vapour enters the expansion (throttling) valve
Reduce compressor overheating

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Refrigeration and Air Conditioning
The relative coefficient of performance is

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

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Refrigeration and Air Conditioning
Aqua ammonia is used as refrigerant in the following type of refrigeration system

Indirect
Direct
Compression
Absorption

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

Condenser tubes
Evaporator tubes
Capillary tubes
Refrigerant cooling tubes

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Refrigeration and Air Conditioning
Bell Coleman cycle is a

Reversed Rankine cycle
Reversed Carnot cycle
Reversed Joule cycle
Reversed Otto cycle

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MORE MCQ ON Refrigeration and Air Conditioning

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