WELDING BLOCK 3 EXAM 2025/2026
QUESTIONS AND ANSWERS 100% PASS
When a constant voltage machine is used, a ______ - ANS D) Small percentage change in
voltage leads to a larger percentage change in current
For GMAW, the electrode wire is directed through in a(n) ____. - ANS D) Welding gun
U-groove drive rolls in a wire feeder are used to feed _______ electrode wires - ANS A)
Aluminum
A flowmeter measures and controls the ____ of the gas flow. - ANS C) Volume
Which if the following determines the nozzle diameter selected for GMAW - ANS D)
Application and joint access
For gas metal arc welding on carbon and low-alloy steel, which shielding gas produces the
deepest penetration? - ANS D) Carbon dioxide
Which AWS specification covers electrodes used for welding low-alloy steels? - ANS C) A5.28
In a GMAW electrode designation, S indicates _____ - ANS B) A solid electrode
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, When the final part of a GMAW electrode designation is a letter-number combination, the
electrode _______ - ANS B) Is a low-alloy electrode
An FCAW carbon steel electrode with improved toughness is indicated by the letter _____ in
the electrode - ANS C) J
An FCAW electrode has the flux and alloying materials on the outside. - ANS False
GMAW and FCAW are semiautomatic welding processes - ANS True
The FCAW process is used to weld nonferrous alloys. - ANS False
A disadvantage of FCAW-S is high weld spatter. - ANS True
When the electrode wire diameter is changed, the drive roll on the wire feeder must also be
changed - ANS True
FCAW can be performed without a pressurized shielding gas. - ANS True
In the FCAW-S process, a shielding gas prevents oxygen and nitrogen from getting into the weld
pool - ANS False
In general, FCAW-G is used more often in indoor fabrication facilities. - ANS True
The only gas used by itself to weld carbon steel and low-alloy steels with FCAW-G is carbon
dioxide. - ANS True
An argon-carbon dioxide mixture us used for welding thicker nonferrous metals - ANS False
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS AND ANSWERS 100% PASS
When a constant voltage machine is used, a ______ - ANS D) Small percentage change in
voltage leads to a larger percentage change in current
For GMAW, the electrode wire is directed through in a(n) ____. - ANS D) Welding gun
U-groove drive rolls in a wire feeder are used to feed _______ electrode wires - ANS A)
Aluminum
A flowmeter measures and controls the ____ of the gas flow. - ANS C) Volume
Which if the following determines the nozzle diameter selected for GMAW - ANS D)
Application and joint access
For gas metal arc welding on carbon and low-alloy steel, which shielding gas produces the
deepest penetration? - ANS D) Carbon dioxide
Which AWS specification covers electrodes used for welding low-alloy steels? - ANS C) A5.28
In a GMAW electrode designation, S indicates _____ - ANS B) A solid electrode
pg. 1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, When the final part of a GMAW electrode designation is a letter-number combination, the
electrode _______ - ANS B) Is a low-alloy electrode
An FCAW carbon steel electrode with improved toughness is indicated by the letter _____ in
the electrode - ANS C) J
An FCAW electrode has the flux and alloying materials on the outside. - ANS False
GMAW and FCAW are semiautomatic welding processes - ANS True
The FCAW process is used to weld nonferrous alloys. - ANS False
A disadvantage of FCAW-S is high weld spatter. - ANS True
When the electrode wire diameter is changed, the drive roll on the wire feeder must also be
changed - ANS True
FCAW can be performed without a pressurized shielding gas. - ANS True
In the FCAW-S process, a shielding gas prevents oxygen and nitrogen from getting into the weld
pool - ANS False
In general, FCAW-G is used more often in indoor fabrication facilities. - ANS True
The only gas used by itself to weld carbon steel and low-alloy steels with FCAW-G is carbon
dioxide. - ANS True
An argon-carbon dioxide mixture us used for welding thicker nonferrous metals - ANS False
pg. 2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
