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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Equal to
Less than
More than
None of these

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Refrigeration and Air Conditioning
The lowest thermal diffusivity is of

Aluminium
Rubber
Iron
Lead

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Refrigeration and Air Conditioning
The dehumidification process, on the psychrometric chart, is shown by

Vertical line
Horizontal line
Inclined line
Curved line

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Refrigeration and Air Conditioning
The specific humidity during humidification process

Increases
Remains constant
Decreases
None of these

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Refrigeration and Air Conditioning
The thermostatic expansion valve is used in ________ type of evaporators.

DX coil
Dry
None of these
Flooded

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Refrigeration and Air Conditioning
If a gas is to be liquefied, its temperature must be

Increased to a value above its critical temperature
Equal to critical temperature
Reduced to a value below its critical temperature
None of these

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