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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Increases
None of these
Decreases
Remains constant

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

Lowers compressor capacity because vapour is lighter
Lowers evaporation temperature
Increases power required per ton of refrigeration
All of these

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Refrigeration and Air Conditioning
Highest pressure encountered in a refrigeration system should be

Near critical pressure
Critical pressure of refrigerant
Much below critical pressure
Much above critical pressure

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Refrigeration and Air Conditioning
During humidification process, __________ increases.

Specific humidity
Wet bulb temperature
Relative humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
The boiling point of ammonia is

-10.5°C
-33.3°C
-77.7°C
-30°C

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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

Same
More/less depending on rating
More
Less

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MORE MCQ ON Refrigeration and Air Conditioning

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