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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Condenser, absorber and separator (rectifier)
Evaporator
Absorber
Condenser

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

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

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Refrigeration and Air Conditioning
The thermostatic expansion valve operates on the changes in the

Pressure in the evaporator
Degree of superheat at exit from the evaporator
Temperature of the evaporator
None of these

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Refrigeration and Air Conditioning
For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

Equal
Anything
Small
High

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Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

1: 3
1: 9
9: 1
1: 1

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Remains constant
Increases
None of these
Decreases

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MORE MCQ ON Refrigeration and Air Conditioning

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