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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Remains constant
Decreases
None of these
Increases

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

Zero
100
20
50

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

Decreases C.O.P
Increases C.O.P
Other factors decide C.O.P
O.P remains unaltered

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Refrigeration and Air Conditioning
The advantage of dry compression is that

It permits higher speeds to be used
It results in high volumetric and mechanical efficiency
All of these
It permits complete evaporation in the evaporator

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Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Steel
Brass
Copper
Aluminium

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

Wet bulb temperature
Dew point temperature
Relative humidity
Dry bulb temperature

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MORE MCQ ON Refrigeration and Air Conditioning

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