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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Bell Coleman
Carnot
Stirling
Ericson

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Refrigeration and Air Conditioning
The advantage of dry compression is that

It results in high volumetric and mechanical efficiency
It permits complete evaporation in the evaporator
All of these
It permits higher speeds to be used

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Refrigeration and Air Conditioning
Air refrigeration cycle is used in

Air conditioning
Commercial refrigerators
Gas liquefaction
Domestic refrigerators

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

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

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Refrigeration and Air Conditioning
The mass of water vapour present in __________ is called absolute humidity.

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

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Refrigeration and Air Conditioning
The air cooling system mostly used in transport type aircrafts is

Simple air cooling system
All of the listed here
Simple evaporative air cooling system
Bootstrap air cooling system

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MORE MCQ ON Refrigeration and Air Conditioning

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