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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The humidity ratio or specific humidity is the mass of water vapour present in

1 kg of wet air
1 kg of dry air
1 m3 of wet air
1 m3 of dry air

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Refrigeration and Air Conditioning
The dry bulb temperature lines, on the psychrometric chart are

Horizontal and non-uniformly spaced
Vertical and uniformly spaced
Curved lines
Horizontal and uniformly spaced

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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
The advantage of dry compression is that

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

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Refrigeration and Air Conditioning
An evaporator is also known as

All of these
Chilling coil
Freezing coil
Cooling coil

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Copper
Steel
Brass
Aluminium

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MORE MCQ ON Refrigeration and Air Conditioning

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