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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

620 kJ/min
420 kJ/min
210 kJ/min
21 kJ/min

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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

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

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Refrigeration and Air Conditioning
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

0.3
0.67
1.5
0.6

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Refrigeration and Air Conditioning
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.

Less
None of these
More
Same

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Refrigeration and Air Conditioning
The humidification process, on the psychrometric chart is shown by

Inclined line
Vertical line
Horizontal line
Curved line

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Refrigeration and Air Conditioning
The advantage of dry compression is that

It permits complete evaporation in the evaporator
It results in high volumetric and mechanical efficiency
All of these
It permits higher speeds to be used

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MORE MCQ ON Refrigeration and Air Conditioning

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