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Sheet Metal Worker
WELDING 4 TIG AND CO2 WELDING
Set 4
Set 4
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Q10894
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What is the defect caused by air mixed with gas in CO<sub>2</sub> welding?
A
Over lap
B
Blow hole
C
Incomplete penetration
D
Excess wide bead
Q10895
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What is the cause for excessive wide bead while welding in CO<sub>2</sub> process?
A
in adequate gas flow
B
welding current too low
C
too small dia of nozzle
D
welding speed too low
Q10896
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What is the defect caused by high current and low voltage in GMAW process?
A
Spatter
B
Undercut
C
Incomplete fusion
D
Crack on base metal
Q10897
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What is the remedy for incomplete fusion of weld in GMAW process?
A
Dirty weld joint
B
Too long cable
C
Improper welding angle
D
Correct the root dimension
Q10898
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What is the remedy to prevent the air contamination in weld by GMAW process?
A
Connect the gas regulator
B
Increase the length of gas pipe
C
Inert gas backing
D
Reduce flow rate of gas
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