GMAW Test Review Questions and Answers Fully Solved 100%
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Course
GMAW
Institution
GMAW
A worn contact tube results in
a) poor arc starts.
b) ropey welds.
c) excessive spatter.
d) porosity. - ️️a) poor arc starts
Electric current is transferred to the electrode through the
a) gun cable liner.
b) contact tube.
c) wire feed rolls.
d) gas diffuser. - ️️b) contact tube
G...
a) poor arc starts.
b) ropey welds.
c) excessive spatter.
d) porosity. - ✔️✔️a) poor arc starts
Electric current is transferred to the electrode through the
a) gun cable liner.
b) contact tube.
c) wire feed rolls.
d) gas diffuser. - ✔️✔️b) contact tube
GMAW is the abbreviation for?
a) Gas Machine Arc Welding.
b) Gas Method Arc Welding.
c) Gas Material Arc Welding.
d) Gas Metal Arc Welding. - ✔️✔️d) Gas Metal Arc Welding
In GMAW, insufficient gas flow can cause?
a) Undercut.
b) Overlap.
c) Porosity.
d) Hydrogen cracking. - ✔️✔️c) Porosity
The benefit of copper coated electrode wires is
a) better arc starts.
b) increased contact tip life.
c) improved wire feeding.
d) all of the above. - ✔️✔️d) all of the above
What type of power source is used for GMAW?
a) Constant Current
b) Alternating Current
, c) Variable Voltage
d) Constant Voltage - ✔️✔️d) Constant Voltage
In GMAW, which type of metal transfer is restricted to flat position and horizontal
fillet welds?
a) Pulsed Transfer
b) Short Circuiting Transfer
c) Spray Transfer
d) Surface Tension Transfer - ✔️✔️c) Spray Transfer
In GMAW, the shielding for the molten metal is accomplished through the use of
a) granular flux.
b) inert and reactive gases.
c) reactive gases only.
d) inert gases only. - ✔️✔️b) inert and reactive gasses
What type of electrode wire is used with GMAW?
a) Flux cored
b) Solid
c) Tubular
d) None of the above - ✔️✔️b) Solid
In GMAW, the amperage is controlled by adjusting the
a) voltage.
b) wire feed speed.
c) wattage.
d) arc length. - ✔️✔️b) wire feed speed
In GMAW, electrode extension is defined as the distance from the
a) nozzle the molten weld pool.
b) end of the contact tube to the molten weld pool.
c) tip of the wire to the molten weld pool.
d) end of the contact tube to the tip of the wire. - ✔️✔️d) end of the contact tube to the
tip of the wire.
Which AWS electrode classification is correct for GMAW wire?
a) ER70S-3
b) E70S-6
c) E70-S3
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