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REFRIGERATION AND AIR CONDITIONING

Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

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

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

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

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Refrigeration and Air Conditioning
Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the liquid ammonia passing through the evaporator.

Equalize
Reduce
None of these
Increase

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Refrigeration and Air Conditioning
The dehumidification process, on the psychrometric chart, is shown by

Curved line
Inclined line
Vertical line
Horizontal line

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Refrigeration and Air Conditioning
The process, generally used in winter air-conditioning to warm and humidity the air, is called

Cooling and dehumidification
Dehumidification
Heating and humidification
Humidification

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