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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

Same
More
Less
More for small capacity and less for high capacity

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Refrigeration and Air Conditioning
During dehumidification process, _________ remains constant.

Relative humidity
Specific humidity
Dry bulb temperature
Wet bulb temperature

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Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Compressor
Evaporator
Condenser
Expansion valve

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Refrigeration and Air Conditioning
The thermostatic expansion valve operates on the changes in the

None of these
Degree of superheat at exit from the evaporator
Pressure in the evaporator
Temperature of the evaporator

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

80 kcal/ min
50 kcal/ hr
50 kcal/ min
80 kcal/ hr

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

Carbon dioxide
R-12
Sulphur dioxide
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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