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Refrigeration and Air Conditioning

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

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

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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

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

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Refrigeration and Air Conditioning
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg)

100 kJ/kg
50 kJ/kg
25 kJ/kg
125 kJ/kg

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Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Depends upon the make
Is more than 1
Is less than 1
Is equal to 1

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Refrigeration and Air Conditioning
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Condenser
Evaporator
Absorber
None of these

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Refrigeration and Air Conditioning
The humidification 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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