Welding GMAW questions with correct
answers graded A+
Advantages of GMAW - correct answer ✔✔Higher deposition rates, ease of use, and less electrode waste
than SMAW.
Advantages of GMAW - correct answer ✔✔Narrower groove angles can be used on V-groove butt welds
than with SMAW because of smaller wire sizes and better penetration.
Disadvantage of GMAW - correct answer ✔✔A disadvantage of GMAW is that it does not work well
under windy conditions.
Welding principals - correct answer ✔✔GMAW is nearly always performed with direct current electrode
positive (DCEP) current
Welding principals - correct answer ✔✔GMAW uses a Constant Voltage power supply.
Metal transfer - correct answer ✔✔One way is by the short-circuiting method, smaller diameter
electrode wires can be used for this method.
Metal transfer - correct answer ✔✔Another way is to transfer metals across the arc
-Globular transfer
-Spray transfer
-Pulsed spray transfer
Short circuiting GMAW - correct answer ✔✔Short-circuiting gas metal arc welding (GMAW-S) is used
with relatively low welding currents
Short circuiting GMAW - correct answer ✔✔Short-circuiting transfer is particularly useful on thin metal
sections.
, Short circuiting GMAW - correct answer ✔✔The combined effect of surface tension and the pinch force
separates the molten metal and the electrode
Short circuiting GMAW - correct answer ✔✔Short-circuiting transfer works well for poorly fitted parts
and filling large gaps.
Short circuiting GMAW - correct answer ✔✔C25, which is a mixture of 75% Argon and 25% Carbon
Dioxide is most often used for the Short-circuiting transfer mode especially on thin material or low-alloy
steels.
Inductance - correct answer ✔✔Inductance slows the rise in the current level after each short circuit.
Inductance - correct answer ✔✔Slope and Inductance work together to help minimize spatter
Spray transfer - correct answer ✔✔Spray transfer occurs when very fine droplets of metal form at the tip
of the welding wire and travel across the arc.
Spray transfer - correct answer ✔✔Spray transfer only takes place when the shielding gas contains at
least 80% argon.
Spray transfer - correct answer ✔✔Spray transfer is limited to the flat; 1F,1G or horizontal; 2F welding
positions and on metal over 1/8″ thick.
Spray transfer - correct answer ✔✔During spray transfer metal drops travel across
the arc into the weld
puddle.
Spray transfer - correct answer ✔✔The solid welding wire does not touch the base metal during the
spray transfer method
answers graded A+
Advantages of GMAW - correct answer ✔✔Higher deposition rates, ease of use, and less electrode waste
than SMAW.
Advantages of GMAW - correct answer ✔✔Narrower groove angles can be used on V-groove butt welds
than with SMAW because of smaller wire sizes and better penetration.
Disadvantage of GMAW - correct answer ✔✔A disadvantage of GMAW is that it does not work well
under windy conditions.
Welding principals - correct answer ✔✔GMAW is nearly always performed with direct current electrode
positive (DCEP) current
Welding principals - correct answer ✔✔GMAW uses a Constant Voltage power supply.
Metal transfer - correct answer ✔✔One way is by the short-circuiting method, smaller diameter
electrode wires can be used for this method.
Metal transfer - correct answer ✔✔Another way is to transfer metals across the arc
-Globular transfer
-Spray transfer
-Pulsed spray transfer
Short circuiting GMAW - correct answer ✔✔Short-circuiting gas metal arc welding (GMAW-S) is used
with relatively low welding currents
Short circuiting GMAW - correct answer ✔✔Short-circuiting transfer is particularly useful on thin metal
sections.
, Short circuiting GMAW - correct answer ✔✔The combined effect of surface tension and the pinch force
separates the molten metal and the electrode
Short circuiting GMAW - correct answer ✔✔Short-circuiting transfer works well for poorly fitted parts
and filling large gaps.
Short circuiting GMAW - correct answer ✔✔C25, which is a mixture of 75% Argon and 25% Carbon
Dioxide is most often used for the Short-circuiting transfer mode especially on thin material or low-alloy
steels.
Inductance - correct answer ✔✔Inductance slows the rise in the current level after each short circuit.
Inductance - correct answer ✔✔Slope and Inductance work together to help minimize spatter
Spray transfer - correct answer ✔✔Spray transfer occurs when very fine droplets of metal form at the tip
of the welding wire and travel across the arc.
Spray transfer - correct answer ✔✔Spray transfer only takes place when the shielding gas contains at
least 80% argon.
Spray transfer - correct answer ✔✔Spray transfer is limited to the flat; 1F,1G or horizontal; 2F welding
positions and on metal over 1/8″ thick.
Spray transfer - correct answer ✔✔During spray transfer metal drops travel across
the arc into the weld
puddle.
Spray transfer - correct answer ✔✔The solid welding wire does not touch the base metal during the
spray transfer method
