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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During cooling and dehumidification, dry bulb temperature

Remains constant
None of these
Increases
Decreases

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Very little work input
Zero work input
Maximum work input
Nearly same work input as for vapour compression cycle

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Refrigeration and Air Conditioning
In Electrolux refrigerator

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

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Refrigeration and Air Conditioning
Which of the following refrigerant is highly toxic and flammable?

Sulphur dioxide
Carbon dioxide
Ammonia
R-12

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Refrigeration and Air Conditioning
Most air cooled condensers are designed to operate with a temperature difference of

8°C
22°C
5°C
14°C

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Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

None of these
More
Same
Less

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MORE MCQ ON Refrigeration and Air Conditioning

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