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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Dry bulb depression
Degree of saturation
Dew point depression
Wet bulb depression

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Smaller
Smaller/bigger depending on capacity
Equal
Bigger

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

Remains constant
None of these
Decreases
Increases

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-75.2°C
-56.6°C
-77.7°C
-135.8°C

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Refrigeration and Air Conditioning
Carbon dioxide is

All of the listed here
Colourless
Non-flammable
Odourless

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Refrigeration and Air Conditioning
The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called

None of the listed here
Sub-cooling or under-cooling
Normal cooling
Super-cooling

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