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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 + C.O.P
1 - (1/C.O.P)
1 + (1/C.O.P)
1 - C.O.P.

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Refrigeration and Air Conditioning
In vapour compression cycle the condition of refrigerant is superheated vapour

After passing through the condenser
After passing through the expansion or throttle valve
Before entering the expansion valve
Before passing through the condenser

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Refrigeration and Air Conditioning
Moisture in Freon refrigeration system causes

Freezing automatic regulating valve
Ineffective refrigeration
Corrosion of whole system
High power consumption

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Refrigeration and Air Conditioning
The relative coefficient of performance is

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

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant is dry saturated vapour

After leaving the condenser
After leaving the compressor
Before entering the compressor
Before entering the condenser

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Refrigeration and Air Conditioning
Condensing temperature in a refrigerator is the temperature

Of evaporator
Of freezing zone
At which refrigerant gas becomes liquid
Of cooling medium

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MORE MCQ ON Refrigeration and Air Conditioning

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