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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
Formation of frost on evaporator in refrigerator

Can be avoided by proper design
Increases heat transfer rate
Results in loss of heat due to poor heat transfer
Is immaterial

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Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

Frosting evaporator
None of these
Non-frosting evaporator
Defrosting evaporator

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Refrigeration and Air Conditioning
Critical temperature is the temperature above which

A gas will never liquefy
Water will never evaporate
Water will evaporate
A gas will immediately liquefy

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

To the left of saturated liquid line
None of these
Between the saturated liquid line and saturated vapour line
To the right of saturated liquid line

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Refrigeration and Air Conditioning
The air cooling system mostly used in transport type aircrafts is

All of the listed here
Bootstrap air cooling system
Simple evaporative air cooling system
Simple air cooling system

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MORE MCQ ON Refrigeration and Air Conditioning

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