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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The sub-cooling in a refrigeration cycle

None of these
Increases C.O.P.
Does not alter C.O.P.
Decreases C.O.P.

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

Capillary tubes
Condenser tubes
Refrigerant cooling tubes
Evaporator tubes

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

As low as possible (3 to 11°C)
High, of the order of 25°
Any value
Zero

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Air conditioning
Commercial refrigerators
Domestic refrigerators
Gas liquefaction

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Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Dew point temperature
Wet bulb temperature
Specific humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

840 kJ/ min
21 kJ/ min
420 kJ/ min
210 kJ/ min

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MORE MCQ ON Refrigeration and Air Conditioning

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