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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The higher temperature in vapour compression cycle occurs at

Expansion valve
Compressor discharge
Receiver
Evaporator

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Refrigeration and Air Conditioning
The power per tonne of refrigeration is

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

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

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

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Refrigeration and Air Conditioning
The vapour pressure of refrigerant should be

Equal to atmospheric pressure
Higher than atmospheric pressure
Could be anything
Lower than atmospheric pressure

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

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

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Refrigeration and Air Conditioning
The refrigerant used in small tonnage commercial machines (hermetically sealed units) is

R-12
Sulphur dioxide
Ammonia
Carbon dioxide

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MORE MCQ ON Refrigeration and Air Conditioning

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