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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Compression
Expansion
Evaporation
Condensation

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

Vertical line
Inclined line
Horizontal line
Curved line

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

Lowers compressor capacity because vapour is lighter
Lowers evaporation temperature
All of these
Increases power required per ton of refrigeration

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Refrigeration and Air Conditioning
The lowest thermal diffusivity is of

Rubber
Iron
Lead
Aluminium

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Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

decreases
depends on other factors
increases
remains same

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Wet bulb temperature
Relative humidity
Specific humidity
Dry bulb temperature

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MORE MCQ ON Refrigeration and Air Conditioning

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