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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The central air conditioning system has ___________ overall efficiency as compared to individual systems.

Lower
Same
None of these
Higher

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Refrigeration and Air Conditioning
During sensible cooling,

Relative humidity remains constant
Partial pressure of vapour remains constant
Wet bulb temperature increases
Specific humidity increases

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Refrigeration and Air Conditioning
Air refrigerator works on

Bell Coleman cycle
Reversed Carnot cycle
None of these
Both (A) and (B)

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Refrigeration and Air Conditioning
The temperature of ammonia after compression in a vapour compression system is

None of these
50 to 70°C
70 to 110°C
20 to 50°C

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Refrigeration and Air Conditioning
During humidification process, __________ increases.

Wet bulb temperature
Specific humidity
Relative humidity
Dry bulb temperature

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Refrigeration and Air Conditioning
The bank of tubes at the back of domestic refrigerator is

Refrigerant cooling tubes
Evaporator tubes
Capillary tubes
Condenser tubes

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