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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

Sulphur sticks
Soap and water
Halide torch
All of these

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Refrigeration and Air Conditioning
The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is

Less
Same
More
More or less depending on ambient conditions

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

Inclined line
Horizontal line
Vertical line
Curved line

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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.

Higher
Same
None of these
Lower

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Refrigeration and Air Conditioning
In Electrolux refrigerator

Ammonia evaporates in hydrogen
Ammonia is absorbed in hydrogen
Ammonia is absorbed in water
Hydrogen evaporates in ammonia

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Refrigeration and Air Conditioning
In case of sensible cooling of air, the coil efficiency is given by

1/ B.P.F.
1 + B.P.F.
1 - B.P.F.
P.F. - 1

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MORE MCQ ON Refrigeration and Air Conditioning

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