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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Relative humidity
Specific humidity
Wet bulb temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
The coefficient of performance is the ratio of the refrigerant effect to the

Heat of compression
Work done by compressor
Enthalpy increase in compressor
All of these

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

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

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Refrigeration and Air Conditioning
Air conditioning means

Dehumidifying
Cooling
Heating
All of these

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

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

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Refrigeration and Air Conditioning
In Electrolux refrigerator

Ammonia is absorbed in hydrogen
Hydrogen evaporates in ammonia
Ammonia is absorbed in water
Ammonia evaporates in hydrogen

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