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Welding - 4. TIG and CO2 Welding
15

Welding - 4. TIG and CO2 Welding MCQ with Answers

15) What is the recommended tungsten electrode tip used for GTAW in AC polarity?

Bevel tip

Conical tip

Rounded tip

Straight tip

Answer is:

Rounded tip

Welding - 4. TIG and CO2 Welding MCQ with Answers

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Related Welding - 4. TIG and CO2 Welding MCQ with Answers

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

Over lap

Blow hole

Incomplete penetration

Excess wide bead

Answer is:

Blow hole

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

in adequate gas flow

welding current too low

too small dia of nozzle

welding speed too low

Answer is:

welding speed too low

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

Spatter

Undercut

Incomplete fusion

Crack on base metal

Answer is:

Crack on base metal

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

Dirty weld joint

Too long cable

Improper welding angle

Correct the root dimension

Answer is:

Correct the root dimension

Welding - 4. TIG and CO2 Welding MCQ with Answers

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