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Welder
Welder Set-1
Gas Metal Arc Welding
96

Gas Metal Arc Welding MCQ with Answers

96) Which type of defect is caused if the gas flowing rate is uneven?

Porosity

Distortion

Under cut

Incomplete fusion

Answer is:

Porosity

Gas Metal Arc Welding MCQ with Answers

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Related Gas Metal Arc Welding MCQ with Answers

97) What is the difficulty in starting of arc in GMAW?

Wrong polarity

Unsteady hand

Work piece dirty

Excess of voltage

Answer is:

Wrong polarity

98) How to troubleshoot the burn back problem if the contact tip is plugged or worn out?

Adjust the contact tip

Damaged cable connections

Clean and replace contact tip

Low voltage and insufficient heat

Answer is:

Clean and replace contact tip

99) What do you call a weld joint having small holes/cavities due to entrapped gas packets?

Lack of fusion

Lack of penetration

Spatter

Porosity

Answer is:

Porosity

100) What is the defect in a weld joint, in which the weld metal melting through base metal resulting in holes?

Excessive penetration

Lack of penetration

Burn through

Distortion

Answer is:

Burn through

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