6) How the molten puddle is protected against atmospheric oxygen and nitrogen while using bare electrode in MAG welding?
Answer is:
By shielding gas CO2
Related Welding - 4. TIG and CO2 Welding MCQ with Answers
Answer is:
Avoid ice forming of CO2
Answer is:
75% Helium 25% Argon
Answer is:
Helium - Argon
Answer is: