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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Refrigeration in aeroplanes usually employs the following refrigerant

CO2
Air
Freon-11
Freon-22

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Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

High
Optimum
Low
Any value

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Refrigeration and Air Conditioning
A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

Difference of (A) and (B)
Heat stored in the human body
Heat dissipated to the surroundings
Sum of (A) and (B)

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Refrigeration and Air Conditioning
In chemical dehumidification process,

All of these
Dry bulb temperature increases
Wet bulb temperature decreases
Dew point temperature decreases

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Refrigeration and Air Conditioning
Freon group of refrigerants are

Non-inflammable and toxic
Inflammable
Toxic
Nontoxic and non-inflammable

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

None of these
Increases
Decreases
Remains constant

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MORE MCQ ON Refrigeration and Air Conditioning

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