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Refrigeration and Air Conditioning

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

Carnot
Bell Coleman
Ericson
Stirling

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Using reagents
Smelling
Halide torch which on detection produces greenish flame lighting
Sulphur sticks which on detection gives white smoke

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Refrigeration and Air Conditioning
One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice

In 1 minute
In 12 hours
In 24 hours
In 1 hour

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Refrigeration and Air Conditioning
Ammonia is

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

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Refrigeration and Air Conditioning
Which of the following statement is correct for ammonia as a refrigerant?

It requires large displacement per TR compared to fluoro carbons.
It reacts with copper and its alloys.
It is toxic to mucous membranes.
All of these

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Refrigeration and Air Conditioning
The central air conditioning system has ___________ overall efficiency as compared to individual systems.

None of these
Same
Lower
Higher

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MORE MCQ ON Refrigeration and Air Conditioning

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