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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during humidification process

Remains constant
Increases
Decreases
None of these

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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.

Less than
None of these
Equal to
Greater than

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Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

Any value
Low
Optimum
High

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Refrigeration and Air Conditioning
A human body feels comfortable when the heat produced by the metabolism of human body is equal to the

Heat stored in the human body
Heat dissipated to the surroundings
Difference of (A) and (B)
Sum of (A) and (B)

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Refrigeration and Air Conditioning
For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

Small
Anything
Equal
High

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Refrigeration and Air Conditioning
The formation of frost on cooling coils in a refrigerator

Improves C.O.P. of the system
Increases heat transfer
Increases power consumption
Reduces power consumption

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MORE MCQ ON Refrigeration and Air Conditioning

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