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Refrigeration and Air Conditioning

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

Critical pressure
Discharge pressure
Back pressure
Suction pressure

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

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

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Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Carnot
Stirling
Bell Coleman
Ericson

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Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

22°C DBT and 60% RH
20°C DBT and 80% RH
25°C DBT and 100% RH
25°C DBT and 40% RH

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Refrigeration and Air Conditioning
Most of the domestic refrigerators work on the following refrigeration system

Electrolux refrigerator
Vapour compression
Carnot cycle
Vapour absorption

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Dry bulb depression
Wet bulb depression
Degree of saturation
Dew point depression

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MORE MCQ ON Refrigeration and Air Conditioning

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