GAS TUNGSTEN ARC WELDING - Practice Mode

1) What is the purpose of H.F. unit in TIG welding?

To produce the AC To change AC to DC To produce power supply To initiate the arc without touching the electrode on the base metal

Correct Answer: To initiate the arc without touching the electrode on the base metal

2) Which type of cooling system is used in heavy duty welding operations?

Air cooled Oil cooled Gas cooled Water cooled

Correct Answer: Water cooled

3) Which electrode is used in TIG welding process?

Zinc electrode Carbon electrode Tungsten Magnesium electrode

Correct Answer: Tungsten

4) What is the device used to show the volume of the inert gas allowed to go to the welding torch in TIG welding?

Flow meter CO2 regulator Pressure meter Argon regulator

Correct Answer: Flow meter

5) Which gas is chemically inactive with any metals in hot or cold condition in TIG welding?

Argon Oxygen Nitrogen Hydrogen

Correct Answer: Argon

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