WELDING TECHNIQUES - Quiz

1) What is the indication of wrong polarity in DC welding?

Electrode become red hot Electrode will freeze with the job Excess spatters and poor penetration It will produce edge of plates melted off

2) How do you name the depression formed at the end of the weld?

Crack Crater Pin hole Blow hole

3) Which defect will occur, when the equipment is changed for AC to DC supply in arc welding?

Arc blow Over lap Weld crack Distortion