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Welding block 3 exam Questions with Detailed Verified
Answers
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
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
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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
The M in the electrode designation E70T-1M indicates that the electrode is used to make multiple
pass welds Ans: ✓ ✓ ✓ False
GMAW electrodes use the same four-digit numbering systems as non-cast aluminum alloys Ans: ✓
✓ ✓ True
A push-type gun is used to minimize the difficulty of feeding soft wire through a long cable Ans: ✓
✓ ✓ False
FCAW-G produces less smoke than GMAW Ans: ✓ ✓ ✓ False
The polarity used with almost all GMAW applications is _____
A) DCSP
B) DCEN
C) DCRN
D) DCEP Ans: ✓ ✓ ✓ D) DCEP
Which of the following is not a GMAW metal transfer method Ans: ✓ ✓ ✓ B) Solid metal
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Welding block 3 exam Questions with Detailed Verified
Answers
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
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
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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
The M in the electrode designation E70T-1M indicates that the electrode is used to make multiple
pass welds Ans: ✓ ✓ ✓ False
GMAW electrodes use the same four-digit numbering systems as non-cast aluminum alloys Ans: ✓
✓ ✓ True
A push-type gun is used to minimize the difficulty of feeding soft wire through a long cable Ans: ✓
✓ ✓ False
FCAW-G produces less smoke than GMAW Ans: ✓ ✓ ✓ False
The polarity used with almost all GMAW applications is _____
A) DCSP
B) DCEN
C) DCRN
D) DCEP Ans: ✓ ✓ ✓ D) DCEP
Which of the following is not a GMAW metal transfer method Ans: ✓ ✓ ✓ B) Solid metal
© Get it right 2025 Getaway - Stuvia US All rights reserved
