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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Expansion valve
Evaporator
Compressor
Condenser

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

To the left of saturated liquid line
None of these
To the right of saturated liquid line
Between the saturated liquid line and saturated vapour line

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Refrigeration and Air Conditioning
The relative coefficient of performance is equal to

None of these
(Theoretical C.O.P.)/ (Actual C.O.P.)
(Actual C.O.P.) × (Theoretical C.O.P.)
(Actual C.O.P.) /(Theoretical C.O.P.)

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Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

Lithium bromide
Carbon dioxide
Sulphur dioxide
R-12

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Refrigeration and Air Conditioning
The wet bulb depression indicates _________ humidity of the air.

Specific
Relative
Absolute
None of these

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

620 kJ/min
21 kJ/min
420 kJ/min
210 kJ/min

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MORE MCQ ON Refrigeration and Air Conditioning

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