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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Depends upon the make
Is less than 1
Is more than 1
Is equal to 1

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Wet bulb depression
Dry bulb depression
Degree of saturation
Dew point depression

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Evaporator
Condenser
Compressor
Expansion valve

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Refrigeration and Air Conditioning
In vapour compression cycle the condition off refrigerant is dry saturated vapour

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

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Refrigeration and Air Conditioning
The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Will remain unaffected
Will be higher
May be higher or lower depending upon the nature of non-condensable gases
Will be lower

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-22
Ammonia
R-12
R-11

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MORE MCQ ON Refrigeration and Air Conditioning

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