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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Equal to
Less than
None of these
More than

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Refrigeration and Air Conditioning
Rating of a domestic refrigerator is of the order of

0.1 ton
40 tons
10 tons
5 tons

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

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

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Refrigeration and Air Conditioning
In which of the following refrigeration system, waste heat can be effectively used?

None of the listed here
Air refrigeration cycle
Vapour absorption cycle
Vapour compression cycle

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Carnot
Reversed Rankine
Reversed Carnot
Rankine

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Refrigeration and Air Conditioning
When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by

Operating the machine at higher speeds
Operating the machine at lower speeds
Raising the higher temperature
Lowering the higher temperature

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MORE MCQ ON Refrigeration and Air Conditioning

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