WELDING TECHNIQUES - Practice Mode

1) Which type of arc produces humming sound?
Correct Answer: Long arc length
2) Which types of arc length used in thin sheet metals?
Correct Answer: Long arc length
3) Which type polarity used in sheet metal welding?
Correct Answer: Reverse polarity
4) Which polarity is used in welding with heavy and super heavy coated electrodes?
Correct Answer: Reverse polarity
5) Which polarity used in welding cast iron?
Correct Answer: Reverse polarity