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1) Why humming sound effects during arc welding?
Long arc length
Speedy welding
Short arc welding
Normal arc length
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Correct Answer: Long arc length
Question Details
1) Why humming sound effects during arc welding?
Long arc length
Speedy welding
Short arc welding
Normal arc length
2) Which internal defect in welding is invisible to naked eye?
Spatter
Porasity
Undercut
Stray arc
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Correct Answer: Porasity
Question Details
2) Which internal defect in welding is invisible to naked eye?
Spatter
Porasity
Undercut
Stray arc
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