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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

More
Less
More/less depending on rating
Same

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Refrigeration and Air Conditioning
R-12 is generally preferred over R-22 in deep freezers since

It gives higher coefficient of performance
All of these
It is miscible with oil over large range of temperatures
It has low operating pressures

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

Less than 2 kg
More than or equal to 3.65 kg
More than 10 kg
There is no such consideration

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Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Evaporator
Condenser
Expansion valve
Compressor

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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.

Equally
Less
Unpredictable
More

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Refrigeration and Air Conditioning
The specific humidity during humidification process

Decreases
Remains constant
None of these
Increases

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MORE MCQ ON Refrigeration and Air Conditioning

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