Gas Tungsten Arc welding MCQ with Answers

Gas Tungsten Arc welding MCQ with Answers

31) How heat effected zone is covered and protected from atmospheric contaminations in GTAW?

Answer is:

Argon gas

32) What is the use of a little hydrogen added to argon for welding of stainless steel in GTAW process?

Answer is:

Improves heat transfer

33) How molten metal is shielded from the atmospheric contamination as a blanket in GTAW?

Answer is:

By using inert gas

34) How is the inert gas directed to flow over weld pool, in TIG welding?

Answer is:

Through ceramic nozzle

35) What is the name of the part of TIG torch for holding tungsten electrode?

Answer is:

Collet

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