Welder Red Seal · Question
Which of the following is an advantage of alternating current (AC) for SMAW?
One significant advantage of AC in SMAW is its ability to reduce or eliminate arc blow, which is a magnetic phenomenon that deflects the arc, making welding dif
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Question: Which of the following is an advantage of alternating current (AC) for SMAW?
Answer options: ✅ Reduced arc blow
- Deeper penetration
- Better control over out-of-position welding
- Smoother bead appearance
Correct answer: Reduced arc blow
Explanation: One significant advantage of AC in SMAW is its ability to reduce or eliminate arc blow, which is a magnetic phenomenon that deflects the arc, making welding difficult, especially at the ends of plates or in corners.
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- A welder is preparing to weld 20 mm (0.8 in) thick high-strength low-alloy (HSLA) steel using FCAW-G. The weld
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