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REFRIGERATION AND AIR CONDITIONING

Refrigeration and Air Conditioning
The bank of tubes at the back of domestic refrigerator is

Refrigerant cooling tubes
Condenser tubes
Capillary tubes
Evaporator tubes

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Refrigeration and Air Conditioning
Carbon dioxide is

Odourless
Colourless
All of the listed here
Non-flammable

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

Curved line
Horizontal line
Inclined line
Vertical line

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Refrigeration and Air Conditioning
For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

High
Anything
Small
Equal

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Refrigeration and Air Conditioning
The C.O.P. of a heat pump working on a reversed Carnot cycle is

T₁/(T₂ - T₁)
T₂/(T₂ - T₁)
(T₂ - T₁)/T₁
(T₁ - T₂)/T₁

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