Welding block 3; Questions And Answers
When a constant voltage machine is used, a ______ - answer;-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) ____. - answer;-D) Welding
gun
U-groove drive rolls in a wire feeder are used to feed _______ electrode wires -
answer;-A) Aluminum
A flowmeter measures and controls the ____ of the gas flow. - answer;-C) Volume
Which if the following determines the nozzle diameter selected for GMAW - answer;-D)
Application and joint access
For gas metal arc welding on carbon and low-alloy steel, which shielding gas produces
the deepest penetration? - answer;-D) Carbon dioxide
Which AWS specification covers electrodes used for welding low-alloy steels? -
answer;-C) A5.28
In a GMAW electrode designation, S indicates _____ - answer;-B) A solid electrode
When the final part of a GMAW electrode designation is a letter-number combination,
the electrode _______ - answer;-B) Is a low-alloy electrode
An FCAW carbon steel electrode with improved toughness is indicated by the letter
_____ in the electrode - answer;-C) J
An FCAW electrode has the flux and alloying materials on the outside. - answer;-False
GMAW and FCAW are semiautomatic welding processes - answer;-True
The FCAW process is used to weld nonferrous alloys. - answer;-False
A disadvantage of FCAW-S is high weld spatter. - answer;-True
When the electrode wire diameter is changed, the drive roll on the wire feeder must also
be changed - answer;-True
FCAW can be performed without a pressurized shielding gas. - answer;-True
In the FCAW-S process, a shielding gas prevents oxygen and nitrogen from getting into
the weld pool - answer;-False
, Welding block 3; Questions And Answers
In general, FCAW-G is used more often in indoor fabrication facilities. - answer;-True
The only gas used by itself to weld carbon steel and low-alloy steels with FCAW-G is
carbon dioxide. - answer;-True
An argon-carbon dioxide mixture us used for welding thicker nonferrous metals -
answer;-False
The M in the electrode designation E70T-1M indicates that the electrode is used to
make multiple pass welds - answer;-False
GMAW electrodes use the same four-digit numbering systems as non-cast aluminum
alloys - answer;-True
A push-type gun is used to minimize the difficulty of feeding soft wire through a long
cable - answer;-False
FCAW-G produces less smoke than GMAW - answer;-False
The polarity used with almost all GMAW applications is _____
A) DCSP
B) DCEN
C) DCRN
D) DCEP - answer;-D) DCEP
Which of the following is not a GMAW metal transfer method - answer;-B) Solid metal
In the spray transfer method, the metal travels across the arc as ______ - answer;-A)
Fine metal droplets
The percentage of argon in the gas mixture must be above _____ for spray transfer to
occur - answer;-B) 80%
Electrode wire that bunches up in the wire feeder is called a ______ - answer;-B) Bird's
nest
A(n) ______ switch is used to feed electrode wire through the cable to the torch -
answer;-B) Inch/jog
Which of the following statements does not apply to GMAW - answer;-D) Known as TIG
welding
When a constant voltage machine is used, a ______ - answer;-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) ____. - answer;-D) Welding
gun
U-groove drive rolls in a wire feeder are used to feed _______ electrode wires -
answer;-A) Aluminum
A flowmeter measures and controls the ____ of the gas flow. - answer;-C) Volume
Which if the following determines the nozzle diameter selected for GMAW - answer;-D)
Application and joint access
For gas metal arc welding on carbon and low-alloy steel, which shielding gas produces
the deepest penetration? - answer;-D) Carbon dioxide
Which AWS specification covers electrodes used for welding low-alloy steels? -
answer;-C) A5.28
In a GMAW electrode designation, S indicates _____ - answer;-B) A solid electrode
When the final part of a GMAW electrode designation is a letter-number combination,
the electrode _______ - answer;-B) Is a low-alloy electrode
An FCAW carbon steel electrode with improved toughness is indicated by the letter
_____ in the electrode - answer;-C) J
An FCAW electrode has the flux and alloying materials on the outside. - answer;-False
GMAW and FCAW are semiautomatic welding processes - answer;-True
The FCAW process is used to weld nonferrous alloys. - answer;-False
A disadvantage of FCAW-S is high weld spatter. - answer;-True
When the electrode wire diameter is changed, the drive roll on the wire feeder must also
be changed - answer;-True
FCAW can be performed without a pressurized shielding gas. - answer;-True
In the FCAW-S process, a shielding gas prevents oxygen and nitrogen from getting into
the weld pool - answer;-False
, Welding block 3; Questions And Answers
In general, FCAW-G is used more often in indoor fabrication facilities. - answer;-True
The only gas used by itself to weld carbon steel and low-alloy steels with FCAW-G is
carbon dioxide. - answer;-True
An argon-carbon dioxide mixture us used for welding thicker nonferrous metals -
answer;-False
The M in the electrode designation E70T-1M indicates that the electrode is used to
make multiple pass welds - answer;-False
GMAW electrodes use the same four-digit numbering systems as non-cast aluminum
alloys - answer;-True
A push-type gun is used to minimize the difficulty of feeding soft wire through a long
cable - answer;-False
FCAW-G produces less smoke than GMAW - answer;-False
The polarity used with almost all GMAW applications is _____
A) DCSP
B) DCEN
C) DCRN
D) DCEP - answer;-D) DCEP
Which of the following is not a GMAW metal transfer method - answer;-B) Solid metal
In the spray transfer method, the metal travels across the arc as ______ - answer;-A)
Fine metal droplets
The percentage of argon in the gas mixture must be above _____ for spray transfer to
occur - answer;-B) 80%
Electrode wire that bunches up in the wire feeder is called a ______ - answer;-B) Bird's
nest
A(n) ______ switch is used to feed electrode wire through the cable to the torch -
answer;-B) Inch/jog
Which of the following statements does not apply to GMAW - answer;-D) Known as TIG
welding
