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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Carbon dioxide is

Colourless
Non-flammable
All of the listed here
Odourless

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Halocarbon refrigerants
Hydrocarbon refrigerants
Inorganic refrigerants
Zoetrope refrigerants

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

Enthalpy increase in compressor
Work done by compressor
Heat of compression
All of these

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

Higher than
None of the listed here
Lower than
Same as

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Freon
Aqua-ammonia
Water
Ammonia

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Refrigeration and Air Conditioning
The cooling system used for supersonic aircrafts and rockets is

Reduced ambient air cooling system
Bootstrap air cooling system
Regenerative air cooling system
Simple air cooling system

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