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Welder
GAS METAL ARC WELDING
Set 20
Set 20
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Q13101
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Which type of defect is caused if the gas flowing rate is uneven?
A
Porosity
B
Distortion
C
Under cut
D
Incomplete fusion
Q13102
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What is the difficulty in starting of arc in GMAW?
A
Wrong polarity
B
Unsteady hand
C
Work piece dirty
D
Excess of voltage
Q13103
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How to troubleshoot the burn back problem if the contact tip is plugged or worn out?
A
Adjust the contact tip
B
Damaged cable connections
C
Clean and replace contact tip
D
Low voltage and insufficient heat
Q13104
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What do you call a weld joint having small holes/cavities due to entrapped gas packets?
A
Lack of fusion
B
Lack of penetration
C
Spatter
D
Porosity
Q13105
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What is the defect in a weld joint, in which the weld metal melting through base metal resulting in holes?
A
Excessive penetration
B
Lack of penetration
C
Burn through
D
Distortion
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