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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR
3 to 5 TR
0.1 to 0.3 TR
5 to 7 TR

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Compressor and condenser
Compressor and evaporator
Condenser and expansion valve
Expansion valve and evaporator

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

Dry bulb temperature
Dew point temperature
Relative humidity
Wet bulb temperature

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Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

System has high C.O.P.
Mass of the refrigeration equipment is low
Power per TR is low
Mass of refrigerant circulated in the system is low

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Refrigeration and Air Conditioning
Which of the following is not a desirable property of a refrigerant?

Large latent heat
Good electrical conductor
Low boiling point
High risibility with oil

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Refrigeration and Air Conditioning
A pressure gauge on the discharge side of a refrigerant compressor reads too high. The reasons will be

Water temperature being high
All of these
Dirty condenser surface
Lack of cooling water

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