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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The sub-cooling in a refrigeration cycle

Decreases C.O.P.
None of these
Increases C.O.P.
Does not alter C.O.P.

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Refrigeration and Air Conditioning
During a refrigeration cycle, heat is rejected by the refrigerant in a

Condenser
Evaporator
Compressor
Expansion valve

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Refrigeration and Air Conditioning
During cooling and dehumidification, dry bulb temperature

None of these
Remains constant
Increases
Decreases

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

Dehumidification
Humidification
Heating and humidification
Cooling and dehumidification

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Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

None of these
Reversed Carnot cycle
Carnot cycle

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Refrigeration and Air Conditioning
Short horizontal lines on pressure-enthalpy chart show

Constant entropy lines
Constant temperature lines
Constant total heat lines
Constant pressure lines

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