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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m²/h
m²/hK
m/h
m/hK

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Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Wet bulb temperature
Relative humidity
Dry bulb temperature
Dew point temperature

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Refrigeration and Air Conditioning
The vapour pressure of refrigerant should be

Could be anything
Higher than atmospheric pressure
Lower than atmospheric pressure
Equal to atmospheric pressure

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Refrigeration and Air Conditioning
A bootstrap air cooling system has

Four heat exchangers
Three heat exchangers
Two heat exchangers
One heat exchanger

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Refrigeration and Air Conditioning
Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Ammonia
Sulphur dioxide
Fluorine
Carbon dioxide

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Refrigeration and Air Conditioning
Which of the following refrigerant has the highest freezing point.

Sulphur dioxide
Carbon dioxide
Ammonia
R-12

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MORE MCQ ON Refrigeration and Air Conditioning

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