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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Carbon dioxide is

Non-flammable
Colourless
Odourless
All of the listed here

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Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant temperature lines
Constant pressure lines
Constant entropy lines
Constant total heat lines

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Refrigeration and Air Conditioning
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates

Wet bulb temperature
Dew point 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
The mass of water vapour present in __________ is called absolute humidity.

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

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Refrigeration and Air Conditioning
The emissivity of a polished silver body is ____ as compared to black body.

Very low
Same
Low
High

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MORE MCQ ON Refrigeration and Air Conditioning

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