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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

More
Less
More/less depending on rating
Same

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

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

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Wet bulb depression
Degree of saturation
Dry bulb depression
Dew point depression

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

None of the listed here
Wet vapour region
Sub-cooled liquid region
Superheated vapour region

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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
Humidification
Dehumidification
Heating and humidification

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Refrigeration and Air Conditioning
Refrigeration in aeroplanes usually employs the following refrigerant

Air
Freon-22
Freon-11
CO2

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MORE MCQ ON Refrigeration and Air Conditioning

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