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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

None of these
Decreases
Remains constant
Increases

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

All of these
Enthalpy increase in compressor
Heat of compression
Work done by compressor

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Refrigeration and Air Conditioning
The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will

Remain unaffected
Increase
May increase or decrease depending on the type of refrigerant used
Decrease

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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.

None of these
Greater than
Equal to
Less than

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

Ericson
Bell Coleman
Carnot
Stirling

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

Low
Any value
Optimum
High

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MORE MCQ ON Refrigeration and Air Conditioning

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