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According to the American Society of Mechanical Engineers (ASME), the highest percentage of welding defect causes are:

An increase in dust and dirt within the welding transformer will effectively its duty cycle.

Burn-through can result from poor joint fit-up.

A given static load on a weldment will not cause failure of the weld.

When a groove weld melts into the base metal next to the weld toe or the weld root and is not filled by the weld metal, it is called:

When undercutting appears sporadically in short lengths on either/or both sides of a weld, the most likely cause is:

Discontinuities are interruptions of the typical structure of a weldment, such as a lack of homogeneity in the mechanical, metallurgical or physical characteristics of the material or weldment that makes the weld rejectable.

Undercutting that is continuous along one side of the weld is most likely caused by:

MatchingDirections: Match the part of the GTAW setup to its description.

Which part of the arc cleans the surface of the weld?