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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during heating and humidification process.

Remains constant
Increases
None of these
Decreases

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Refrigeration and Air Conditioning
The evaporator used in household refrigerators is

Frosting evaporator
Defrosting evaporator
Non-frosting evaporator
None of these

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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 24 hours
In 12 hours
In 1 minute
In 1 hour

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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
A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be

2 kW
3 kW
1 kW
4 kW

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Refrigeration and Air Conditioning
Ammonia is

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

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MORE MCQ ON Refrigeration and Air Conditioning

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