SA Welder Trade Test Practice Questions - South Africa Artisan Trade Test - Welder (QCTO NAMB) Exam

In GMAW (MIG/MAG) welding of carbon steel, what is the role of the consumable wire electrode?

It only carries current and is never consumed It serves as both the electrode carrying the arc and the filler metal added to the joint It is a tungsten rod that does not melt It is a flux rod that produces only slag

Correct Answer:

It serves as both the electrode carrying the arc and the filler metal added to the joint

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