Welding - 4. TIG and CO2 Welding MCQ with Answers

Welding - 4. TIG and CO2 Welding MCQ with Answers

16) What is the defect caused by air mixed with gas in CO₂ welding?

Answer is:

Blow hole

17) What is the cause for excessive wide bead while welding in CO₂ process?

Answer is:

welding speed too low

18) What is the defect caused by high current and low voltage in GMAW process?

Answer is:

Crack on base metal

19) What is the remedy for incomplete fusion of weld in GMAW process?

Answer is:

Correct the root dimension

20) What is the remedy to prevent the air contamination in weld by GMAW process?

Answer is:

Inert gas backing