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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

840 kJ/ min
21 kJ/ min
420 kJ/ min
210 kJ/ min

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

50 kcal/ min
50 kcal/ hr
80 kcal/ hr
80 kcal/ min

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

Increases C.O.P
O.P remains unaltered
Other factors decide C.O.P
Decreases C.O.P

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Refrigeration and Air Conditioning
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

0.2
1.2
5
6

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Nearly same work input as for vapour compression cycle
Very little work input
Zero work input
Maximum work input

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

Vertical line
Curved line
Horizontal line
Inclined line

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MORE MCQ ON Refrigeration and Air Conditioning

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