MIG Welding Questions with 100% Correct Answers | for Specific Exa

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MIG Welding Questions with 100%
Correct Answers | for Specific Exam
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Incomplete fusion

Ans: a weld discontinuity in which fusion did not occur
between weld metal and fusion faces or adjoining weld
beads



Duty Cycle

Ans: The percentage of time during an arbitrary test
period that a power source or its accessories can be
operated at rated output without overheating



arc voltage

Ans: the voltage across the welding arc



Root reinforcement

Ans: weld reinforcement opposite the side from which
welding was done




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Filler metal

Ans: The metal or alloy to bearded in making a brazed,
soldered, or welded joint



undercut

Ans: a groove melted into the base metal adjacent to
the weld toe or weld root and left unfilled by weld metal



crater

Ans: a depression in the weld face at the termination of a
weld bead



lap joint

Ans: a joint between 2 overlapping members in parallel
planes



complete fusion

Ans: fusion over the entire fusion faces and between all
adjoining weld beads




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tack weld

Ans: a weld made to hold the parts of a weldment in
proper alignment until the final welds are made



gas nozzle

Ans: a device at the end of the torch or gun that directs
shielding gas



Root opening

Ans: a separation at the joint root between the work
pieces



Reinforcement

Ans: weld reinforcement on the side of the joint from
which welding was done



contact tube

Ans: a device which transfers current to a continuous
electrode




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