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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Increases
Decreases
None of these
Remains constant

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Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Decreases
Increases
None of these
Remains constant

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Refrigeration and Air Conditioning
Highest temperature encountered in refrigeration cycle should be

Near critical temperature of refrigerant
Much below critical temperature
At critical Temperature
Above critical temperature

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Refrigeration and Air Conditioning
In case of sensible heating of air, the coil efficiency is given by (where B.P.F. = Bypass factor)

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

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

Remains constant
None of these
Decreases
Increases

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Refrigeration and Air Conditioning
In which of the following refrigeration system, waste heat can be effectively used?

Air refrigeration cycle
Vapour compression cycle
Vapour absorption cycle
None of the listed here

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