GMAW - Plate Module 29209
1. If a composite-cored electrode is used in a GMAW process, the electrode
produces what?
Answer: Filler metal
Explanation: Composite-cored electrodes contain metal powders and flux materials inside a
metal sheath. When used in Gas Metal Arc Welding (GMAW), they primarily serve as a source
of filler metal to join the base metals together.
2. The lenses used in safety glasses, face shields or helmets worn during GMAW
procedures must be:
Answer: Properly tinted
Explanation: Proper tinting protects the welder's eyes from the intense visible and ultraviolet
(UV) light produced during welding, preventing eye damage such as "welder’s flash."
3. During a GMAW procedure, a powered extraction system is often an essential
tool for:
Answer: Removing welding fumes
Explanation: Welding generates hazardous fumes and gases. A powered extraction system helps
remove these from the breathing zone, improving air quality and protecting the welder’s health.
4. During welding preparations, what should be set up around the welding area?
Answer: Welding curtains
Explanation: Welding curtains shield nearby workers and equipment from sparks, spatter, and
harmful light generated during welding.
5. Once a GMAW machine is turned on during start up, the next step is to:
, Answer: Purge the gun as directed
Explanation: Purging the gun clears any debris or contaminants from the welding wire and gas
lines, ensuring a clean start and preventing defects.
6. If the wire feed speed is decreased during GMAW, the voltage must:
Answer: Decrease
Explanation: Wire feed speed and voltage are directly related. Reducing wire feed speed lowers
the current and thus requires a lower voltage to maintain proper arc characteristics.
7. With GMAW equipment, faster weld travel speeds build:
Answer: Smaller beads with less penetration
Explanation: Faster travel speeds reduce heat input, resulting in narrower and shallower weld
beads with less penetration into the base metal.
8. Depending upon the transfer mode being used, GMAW electrode extension
lengths vary from 1/4" to:
Answer: 1" Inch
Explanation: Electrode extension (stick-out) affects the welding arc characteristics and must be
adjusted based on the transfer mode to optimize welding performance.
9. An improperly made GMAW restart will create a:
Answer: Weld discontinuity
Explanation: A poor restart can cause defects like porosity, slag inclusion, or lack of fusion,
which compromise the strength and integrity of the weld.
10. Weld beads that are used to build up a surface and to make multiple pass
welds are known as:
Answer: Overlapping beads
Explanation: Overlapping beads are laid side-by-side or over previous beads to build thickness
or fill grooves in multi-pass welding.
1. If a composite-cored electrode is used in a GMAW process, the electrode
produces what?
Answer: Filler metal
Explanation: Composite-cored electrodes contain metal powders and flux materials inside a
metal sheath. When used in Gas Metal Arc Welding (GMAW), they primarily serve as a source
of filler metal to join the base metals together.
2. The lenses used in safety glasses, face shields or helmets worn during GMAW
procedures must be:
Answer: Properly tinted
Explanation: Proper tinting protects the welder's eyes from the intense visible and ultraviolet
(UV) light produced during welding, preventing eye damage such as "welder’s flash."
3. During a GMAW procedure, a powered extraction system is often an essential
tool for:
Answer: Removing welding fumes
Explanation: Welding generates hazardous fumes and gases. A powered extraction system helps
remove these from the breathing zone, improving air quality and protecting the welder’s health.
4. During welding preparations, what should be set up around the welding area?
Answer: Welding curtains
Explanation: Welding curtains shield nearby workers and equipment from sparks, spatter, and
harmful light generated during welding.
5. Once a GMAW machine is turned on during start up, the next step is to:
, Answer: Purge the gun as directed
Explanation: Purging the gun clears any debris or contaminants from the welding wire and gas
lines, ensuring a clean start and preventing defects.
6. If the wire feed speed is decreased during GMAW, the voltage must:
Answer: Decrease
Explanation: Wire feed speed and voltage are directly related. Reducing wire feed speed lowers
the current and thus requires a lower voltage to maintain proper arc characteristics.
7. With GMAW equipment, faster weld travel speeds build:
Answer: Smaller beads with less penetration
Explanation: Faster travel speeds reduce heat input, resulting in narrower and shallower weld
beads with less penetration into the base metal.
8. Depending upon the transfer mode being used, GMAW electrode extension
lengths vary from 1/4" to:
Answer: 1" Inch
Explanation: Electrode extension (stick-out) affects the welding arc characteristics and must be
adjusted based on the transfer mode to optimize welding performance.
9. An improperly made GMAW restart will create a:
Answer: Weld discontinuity
Explanation: A poor restart can cause defects like porosity, slag inclusion, or lack of fusion,
which compromise the strength and integrity of the weld.
10. Weld beads that are used to build up a surface and to make multiple pass
welds are known as:
Answer: Overlapping beads
Explanation: Overlapping beads are laid side-by-side or over previous beads to build thickness
or fill grooves in multi-pass welding.
