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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

Any value
Low
High
Optimum

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Specific humidity
Relative humidity
Dry bulb temperature
Wet bulb temperature

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Maximum work input
Nearly same work input as for vapour compression cycle
Very little work input
Zero work input

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Wet bulb temperature
Relative humidity
Dry bulb temperature
Dew point temperature

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

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is very wet vapour

Before entering the compressor
Before passing through the condenser
After passing through the expansion or throttle valve
After passing through the condenser

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MORE MCQ ON Refrigeration and Air Conditioning

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