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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during humidification process

Remains constant
Decreases
None of these
Increases

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Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Water coolers
Room air conditioners
Domestic refrigerators
All of these

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Refrigeration and Air Conditioning
The condition of refrigerant after passing through the condenser in a vapour compression system is

Superheated vapour
Saturated liquid
Wet vapour
Dry saturated vapour

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Refrigeration and Air Conditioning
The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by

O.P)P = (
O.P)R
O.P.)R + 2
(
O.P)P = (
(
O.P.)P = (
(
O.P)R - 1
O.P.)R + 1
O.P.)P = (
(

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Refrigeration and Air Conditioning
The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer.

Higher
None of these
Lower
Same

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Refrigeration and Air Conditioning
The bank of tubes at the back of domestic refrigerator is

Evaporator tubes
Capillary tubes
Condenser tubes
Refrigerant cooling tubes

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