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Refrigeration and Air Conditioning

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

Soap and water
Halide torch
Sulphur sticks
All of these

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Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Condensation
Expansion
Compression
Evaporation

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

Wet bulb temperature
Dew point temperature
Dry bulb temperature
Relative humidity

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Refrigeration and Air Conditioning
The capillary tube is not used in large capacity refrigeration systems because

It is made of copper
Required pressure drop cannot be achieved
Cost is too high
Capacity control is not possible

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Refrigeration and Air Conditioning
The emissivity of a polished silver body is ____ as compared to black body.

Very low
High
Same
Low

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Refrigeration and Air Conditioning
Allowable pressure on high pressure side or ammonia absorption system is of the order of

24 bars
56 bars
Slightly above atmospheric pressure
Atmospheric pressure

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MORE MCQ ON Refrigeration and Air Conditioning

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