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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The power per tonne of refrigeration is

None of these
3.5 × C.O.P.
O.P/3.5
3.5/C.O.P.

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Refrigeration and Air Conditioning
The dehumidification process, on the psychrometric chart, is shown by

Inclined line
Horizontal line
Curved line
Vertical line

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Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Increases
Decreases
None of these
Remains constant

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Refrigeration and Air Conditioning
In a refrigeration system, the expansion device is connected between the

Compressor and condenser
Receiver and evaporator
Evaporator and compressor
Condenser and receiver

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

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

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Refrigeration and Air Conditioning
Allowable pressure on high pressure side or ammonia absorption system is of the order of

Slightly above atmospheric pressure
56 bars
24 bars
Atmospheric pressure

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