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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Freon group of refrigerants are

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

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Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

Reversed Carnot cycle
Carnot cycle
None of these

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Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

210 kJ/ min
840 kJ/ min
420 kJ/ min
21 kJ/ min

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Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

System has high C.O.P.
Mass of the refrigeration equipment is low
Power per TR is low
Mass of refrigerant circulated in the system is low

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Refrigeration and Air Conditioning
Where does the lowest temperature occur in a vapour compression cycle?

Condenser
Expansion valve
Evaporator
Compressor

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

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

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