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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During adiabatic saturation process on unsaturated air ___ remains constant.

Dry bulb temperature
Relative humidity
Wet bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

Less than
Greater than
Equal to
None of these

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Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant entropy lines
Constant pressure lines
Constant temperature lines
Constant total heat lines

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Refrigeration and Air Conditioning
Air refrigerator works on

None of these
Both (A) and (B)
Reversed Carnot cycle
Bell Coleman cycle

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Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Same
Higher
Lower
None of these

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-11
R-12
R-22
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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