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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In chemical dehumidification process,

Wet bulb temperature decreases
All of these
Dew point temperature decreases
Dry bulb temperature increases

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

None of these
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
μ/[1 - (1 - μ) (Ps/Pb)]
0.622 Pv/ (Pb - Pv)

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Refrigeration and Air Conditioning
The index which correlates the combined effects of air temperature, relative humidity and air velocity on the human body, is known as

Dew point temperature
Mean radiant temperature
Effective temperature
None of the listed here

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Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

1: 1
1: 9
1: 3
9: 1

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Refrigeration and Air Conditioning
The heat rejection factor (HRF) is given by

1 + (1/C.O.P)
1 + C.O.P
1 - (1/C.O.P)
1 - C.O.P.

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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