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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During dehumidification process, _________ remains constant.

Relative humidity
Specific humidity
Dry bulb temperature
Wet bulb temperature

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes vapour
Above which liquid becomes solid
Above which liquid becomes gas
Above which liquid will remain liquid

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

To the right of saturated liquid line
None of these
To the left of saturated liquid line
Between the saturated liquid line and saturated vapour line

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Refrigeration and Air Conditioning
The relative humidity lines on a psychrometric chart are

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

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Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Increases
None of these
Decreases
Remains constant

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

Brass
Copper
Aluminium
Steel

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