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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and dew point temperature, is called

Wet bulb depression
Dry bulb depression
Dew point depression
Degree of saturation

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Refrigeration and Air Conditioning
The freezing point of sulphur dioxide is

-56.6°C
-135.8°C
-77.7°C
-75.2°C

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

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

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Refrigeration and Air Conditioning
In vapour compression cycle, the condition of refrigerant is saturated liquid

Before passing through the condenser
After passing through the condenser
Before entering the expansion valve
After passing through the expansion throttle valve

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Refrigeration and Air Conditioning
The evolution of heat of solution takes place in ammonia absorption plant when

Lithium bromide mixes with ammonia
Weak solution mixes with strong solution
Ammonia vapour is driven out of solution
Ammonia vapour goes into solution

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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

More
Less
More/less depending on rating
Same

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MORE MCQ ON Refrigeration and Air Conditioning

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