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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Most thermostatic expansion valves are set for a superheat of

5°C
15°C
20°C
10°C

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Domestic refrigerators
Commercial refrigerators
Air conditioning
Gas liquefaction

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

Aluminium
Copper
Brass
Steel

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

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

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

Remains constant
None of these
Decreases
Increases

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

Curved line
Inclined line
Vertical line
Horizontal line

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MORE MCQ ON Refrigeration and Air Conditioning

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