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Refrigeration and Air Conditioning

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

Sulphur sticks
All of these
Halide torch
Soap and water

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Refrigeration and Air Conditioning
The evaporator changes the low pressure liquid refrigerant from the expansion valve into

High pressure liquid refrigerant
Low pressure liquid and vapour refrigerant
Low pressure vapour refrigerant
None of these

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

1.2
5
6
0.2

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Refrigeration and Air Conditioning
The pressure at the outlet of a refrigerant compressor is called

Critical pressure
Suction pressure
Back pressure
Discharge pressure

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Refrigeration and Air Conditioning
In a vapour compression cycle, the refrigerant immediately after expansion valve is

Wet vapour
Saturated liquid
Sub-cooled liquid
Liquid

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

None of these
Higher than
Same as
Lower than

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MORE MCQ ON Refrigeration and Air Conditioning

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