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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

Frosting evaporator
Defrosting evaporator
Non-frosting evaporator
None of these

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

Halide torch
Soap and water
All of these
Sulphur sticks

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Refrigeration and Air Conditioning
For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

High
Equal
Anything
Small

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Refrigeration and Air Conditioning
In chemical dehumidification process,

All of these
Dew point temperature decreases
Dry bulb temperature increases
Wet bulb temperature decreases

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Refrigeration and Air Conditioning
For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is

Rotating
Reciprocating
Screw
Centrifugal

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Refrigeration and Air Conditioning
One of the purposes of sub cooling the liquid refrigerant is to

Reduce compressor discharge temperature
Increase cooling effect
Reduce compressor overheating
Ensure that only liquid and not the vapour enters the expansion (throttling) valve

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MORE MCQ ON Refrigeration and Air Conditioning

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