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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

7.44 kW
18.6 kW
1.86 kW
3.72 kW

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR
3 to 5 TR
0.1 to 0.3 TR
5 to 7 TR

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

Horizontal line
Inclined line
Vertical line
Curved line

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Refrigeration and Air Conditioning
Ammonia is

Non-toxic
Non-inflammable
Toxic and non-inflammable
Highly toxic and inflammable

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Refrigeration and Air Conditioning
Most air cooled condensers are designed to operate with a temperature difference of

14°C
5°C
22°C
8°C

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MORE MCQ ON Refrigeration and Air Conditioning

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