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Refrigeration and Air Conditioning

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

Same as
Lower than
None of these
Higher than

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

Lower than
Same as
None of the listed here
Higher than

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Decreases
Increases
Remains constant
None of these

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Refrigeration and Air Conditioning
Which of the following is not a desirable property of a refrigerant?

Large latent heat
High risibility with oil
Good electrical conductor
Low boiling point

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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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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Saturated liquid
Wet vapour
Superheated vapour
Dry saturated vapour

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