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Refrigeration and Air Conditioning

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

Decreases
None of these
Remains constant
Increases

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

Decreases C.O.P
Other factors decide C.O.P
Increases C.O.P
O.P remains unaltered

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Refrigeration and Air Conditioning
Ammonia is

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

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Refrigeration and Air Conditioning
For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow.

Greater than
None of these
Equal to
Less than

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR
5 to 7 TR
0.1 to 0.3 TR
3 to 5 TR

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Dry bulb temperature
Relative humidity
Wet bulb temperature
Specific humidity

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