Principles of GMAW questions with
verified solutions
amperage - correct answer ✔✔A measurement that indicates the amount of current flowing in a circuit,
which is measured in amperes
constant current - correct answer ✔✔Welding using a current that varies slightly with changes in
voltage. Constant current, or CC, is often used in shielded metal arc welding (SMAW) and gas tungsten
arc welding (GTAW)
constant voltage - correct answer ✔✔Welding using a voltage that varies slightly with changes in
current. Constant voltage, or CV, is often used for gas metal arc welding (GMAW) and flux-cored arc
welding (FCAW)
contact tip to work distance - correct answer ✔✔The distance from the end of the contact tip to the
surface of a workpiece. As contact tip to work distance increases, the welding current decreases
electrode extension - correct answer ✔✔For gas metal arc welding, flux cored arc welding, and
submerged arc welding, the length of unmelted electrode extending beyond the end of the contact tube.
Also known as electrode stick out (ESO)
travel angle - correct answer ✔✔The angle less than 90° between the electrode axis and a line
perpendicular to the weld axis, in a plane determined by the electrode axis and the weld axis. This angle
can also be used to partially define the position of guns, torches, rods and beams
voltage - correct answer ✔✔The electrical force or pressure that causes current to flow in a circuit.
Voltage is measured in volts
wire feed speed - correct answer ✔✔The rate at which the wire electrode is fed through the welding gun
work angle - correct answer ✔✔The angle less than 90° between a line perpendicular to the major
workpiece surface and a plane determined by the electrode axis and the weld axis. In a T-joint or corner
verified solutions
amperage - correct answer ✔✔A measurement that indicates the amount of current flowing in a circuit,
which is measured in amperes
constant current - correct answer ✔✔Welding using a current that varies slightly with changes in
voltage. Constant current, or CC, is often used in shielded metal arc welding (SMAW) and gas tungsten
arc welding (GTAW)
constant voltage - correct answer ✔✔Welding using a voltage that varies slightly with changes in
current. Constant voltage, or CV, is often used for gas metal arc welding (GMAW) and flux-cored arc
welding (FCAW)
contact tip to work distance - correct answer ✔✔The distance from the end of the contact tip to the
surface of a workpiece. As contact tip to work distance increases, the welding current decreases
electrode extension - correct answer ✔✔For gas metal arc welding, flux cored arc welding, and
submerged arc welding, the length of unmelted electrode extending beyond the end of the contact tube.
Also known as electrode stick out (ESO)
travel angle - correct answer ✔✔The angle less than 90° between the electrode axis and a line
perpendicular to the weld axis, in a plane determined by the electrode axis and the weld axis. This angle
can also be used to partially define the position of guns, torches, rods and beams
voltage - correct answer ✔✔The electrical force or pressure that causes current to flow in a circuit.
Voltage is measured in volts
wire feed speed - correct answer ✔✔The rate at which the wire electrode is fed through the welding gun
work angle - correct answer ✔✔The angle less than 90° between a line perpendicular to the major
workpiece surface and a plane determined by the electrode axis and the weld axis. In a T-joint or corner
