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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Decreases
Increases
None of these
Remains constant

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Refrigeration and Air Conditioning
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

Humidity ratio
Relative humidity
Absolute humidity
Degree of saturation

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Refrigeration and Air Conditioning
In Electrolux refrigerator

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

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Smaller
Equal
Bigger
Smaller/bigger depending on capacity

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Refrigeration and Air Conditioning
The operating pressure for refrigerating units using R-12 as a refrigerant is

15 bar
8 bar
2 bar
30 bar

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Refrigeration and Air Conditioning
The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is

More or less depending on ambient conditions
Same
Less
More

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MORE MCQ ON Refrigeration and Air Conditioning

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