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Refrigeration and Air Conditioning Technician
HVAC PLANT
Set 9
Set 9
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Q10088
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Which is the minimum vaccum level preferred in microns before gas charging a system?
A
2000
B
1750
C
750
D
500
Q10089
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Which safety device is attached to nitrogen cylinder?
A
Fuse plug
B
Compound gauge
C
Two stage pressure regulator
D
Automatic pressure bypass valve
Q10090
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Which is eliminated from the system in vacuumising process?
A
Humidity
B
Moisture
C
Pressure
D
Temperature
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