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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Same as
Higher than
Lower than
None of these

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Refrigeration and Air Conditioning
During heating and humidification, the final relative humidity of air

Is higher than that of the entering air
Can be lower or higher than that of the entering air
Is lower than that of the entering air
None of the listed here

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Refrigeration and Air Conditioning
In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively

Ammonia and water
Water and water
Ammonia and lithium bromide
Water and lithium bromide

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Refrigeration and Air Conditioning
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Humidity ratio
Degree of saturation
Absolute humidity
Relative humidity

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Refrigeration and Air Conditioning
The relative humidity lines on a psychrometric chart are

Vertical and uniformly spaced
Horizontal and uniformly spaced
Curved lines
Horizontal and non-uniformly spaced

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

6
5
1.2
0.2

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