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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The curved lines on a psychrometric chart indicates

Dew point temperature
Wet bulb temperature
Relative humidity
Dry bulb temperature

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

None of these
Same as
Higher than
Lower than

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Refrigeration and Air Conditioning
Which of the following refrigerants has lowest freezing point?

Freon-22
Freon-12
NH3
CO2

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

Sulphur sticks
Soap and water
Halide torch
All of these

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Refrigeration and Air Conditioning
In chemical dehumidification process,

Dry bulb temperature increases
Wet bulb temperature decreases
All of these
Dew point temperature decreases

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

More than 10 kg
More than or equal to 3.65 kg
Less than 2 kg
There is no such consideration

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