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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The relative coefficient of performance is

None of these
Theoretical COP/actual COP
Actual COP × theoretical COP
Actual COP/theoretical COP

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Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

More
Less
More for small capacity and less for high capacity
Same

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Refrigeration and Air Conditioning
Moisture in Freon refrigeration system causes

Corrosion of whole system
High power consumption
Freezing automatic regulating valve
Ineffective refrigeration

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Refrigeration and Air Conditioning
Carbon dioxide is

All of the listed here
Colourless
Odourless
Non-flammable

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is ________ dew point temperature.

Same as
Lower than
Higher than
None of these

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Refrigeration and Air Conditioning
The operating pressure for refrigerating units using R-12 as a refrigerant is

30 bar
15 bar
2 bar
8 bar

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