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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The lowest thermal diffusivity is of

Iron
Rubber
Aluminium
Lead

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

Relative humidity
Wet bulb temperature
Specific humidity
Dry bulb temperature

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

Decreases
None of these
Increases
Remains constant

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Refrigeration and Air Conditioning
In a reversed Brayton cycle, the heat is absorbed by the air during

Isentropic compression process
Constant pressure expansion process
Isentropic expansion process
Constant pressure cooling process

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Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

21 kJ/ min
840 kJ/ min
210 kJ/ min
420 kJ/ min

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Refrigeration and Air Conditioning
In a psychrometric chart, specific humidity (moisture content) lines are

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

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