Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when its bulb is surrounded by a wet cloth exposed to the air, is called

Dew point temperature
Wet bulb temperature
None of these
Dry bulb temperature

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Refrigeration and Air Conditioning
A good refrigerant should have

High specific volume and high latent heat of vaporisation
Low C.O.P. and low freezing point
High operating pressures and low freezing point
High latent heat of vaporisation and low freezing point

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