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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the liquid ammonia passing through the evaporator.

None of these
Increase
Reduce
Equalize

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Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

None of these
Increases
Decreases
Remains constant

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Refrigeration and Air Conditioning
Ammonia is

Non-toxic
Non-inflammable
Highly toxic and inflammable
Toxic and non-inflammable

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Refrigeration and Air Conditioning
In Electrolux refrigerator

Hydrogen evaporates in ammonia
Ammonia is absorbed in hydrogen
Ammonia evaporates in hydrogen
Ammonia is absorbed in water

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Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when it is not affected by the moisture present in the air, is called

Dew point temperature
Dry bulb temperature
Wet bulb temperature
None of these

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Refrigeration and Air Conditioning
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to

Detect liquid in vapour
Collect liquid refrigerant and prevent it from going to compressor
Superheat the vapour
Collect vapours

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