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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The coefficient of performance of Heat Pump is always ___ one.

Less than
Equal to
None of the listed here
Greater than

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Refrigeration and Air Conditioning
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

0.67
0.6
0.4
0.376

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Refrigeration and Air Conditioning
One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice

In 12 hours
In 1 minute
In 24 hours
In 1 hour

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Halocarbon refrigerants
Zoetrope refrigerants
Inorganic refrigerants
Hydrocarbon refrigerants

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Refrigeration and Air Conditioning
As relative humidity decreases, the dew point temperature will be ___ wet bulb temperature.

Same as
None of the listed here
Higher than
Lower than

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

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