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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Equal
Smaller/bigger depending on capacity
Smaller
Bigger

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Refrigeration and Air Conditioning
During humidification process, __________ increases.

Relative humidity
Specific humidity
Wet bulb temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
Critical temperature is the temperature above which

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

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Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

Tow specific heat of liquid
Higher critical temperature
High boiling point
High latent heat of vaporisation

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Refrigeration and Air Conditioning
Carbon dioxide is

All of the listed here
Odourless
Non-flammable
Colourless

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Refrigeration and Air Conditioning
In case of sensible cooling of air, the coil efficiency is given by

1 - B.P.F.
1/ B.P.F.
1 + B.P.F.
P.F. - 1

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