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Refrigeration and Air Conditioning

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
During humidification process, __________ increases.

Dry bulb temperature
Specific humidity
Wet bulb temperature
Relative humidity

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Refrigeration and Air Conditioning
The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by

(
(
O.P)R - 1
(
O.P)R
O.P.)P = (
(
O.P)P = (
O.P.)P = (
O.P.)R + 1
O.P.)R + 2
O.P)P = (

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Refrigeration and Air Conditioning
Critical temperature is the temperature above which

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

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Refrigeration and Air Conditioning
Moisture in Freon refrigeration system causes

Ineffective refrigeration
High power consumption
Corrosion of whole system
Freezing automatic regulating valve

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Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

decreases
depends on other factors
remains same
increases

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MORE MCQ ON Refrigeration and Air Conditioning

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