Increasing stick-out has what effect on amperage output and weld penetration?

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Study for the GMA Welding for Collision Repair Welding Test. Enhance your skills with flashcards and multiple choice questions, complete with hints and explanations. Be prepared for your exam!

Multiple Choice

Increasing stick-out has what effect on amperage output and weld penetration?

Explanation:
In GMAW, stick-out controls the arc length. When you increase the distance from the contact tip to the workpiece, the arc becomes longer and the arc resistance rises. With a power source that maintains a relatively constant voltage, this extra resistance causes the current (amperage) to drop. Less current means less heat delivered to the joint, which leads to shallower heat penetration. So increasing stick-out reduces both amperage output and weld penetration; shortening stick-out increases current and deepens penetration.

In GMAW, stick-out controls the arc length. When you increase the distance from the contact tip to the workpiece, the arc becomes longer and the arc resistance rises. With a power source that maintains a relatively constant voltage, this extra resistance causes the current (amperage) to drop. Less current means less heat delivered to the joint, which leads to shallower heat penetration. So increasing stick-out reduces both amperage output and weld penetration; shortening stick-out increases current and deepens penetration.

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