SENSE LEVEL 1 CERTIFICATION TEST MODULE 7 GTAW Q&A
The symbol for tungsten is what? - CORRECT ANSWER✅✅✅W
Tungsten is also called what? - CORRECT ANSWER✅✅✅Wolfram
How long should the post purge (shielding gas) be allowed to flow after the welding arc is broken?
a. 1 Second for every 50 Amps
b. Post flow is a waste of gas and shouldn't be used
c. Long enough to allow the base metal and electrode to cool. - CORRECT ANSWER✅✅✅c. Long
enough to allow the base metal and electrode to cool.
When using GTAW to weld aluminum with alternating current (AC) the tip of the tungsten electrode
should be
a. ground to a 45 degree angle
b. Rounded at the tip
c. kept relatively flat - CORRECT ANSWER✅✅✅b. Rounded at the tip
Alternating Current (AC) is used for welding aluminum because
a. cleaning action
b. medium penetration of the arc
c. to increase travel speed
d. both a. and b. - CORRECT ANSWER✅✅✅d. both a. and b.
Which of the following methods is used to start the GTAW arc without touching the base metal?
a. Pulsed Wave
b. Balanced Wave Start
c. High Frequency Start
d. PolarMag Ionization - CORRECT ANSWER✅✅✅c. High Frequency start
, High Frequency current is added to alternating current to
a. extend the welding wavelength
b. maintain the arc
c. improve connection to ground - CORRECT ANSWER✅✅✅b. maintain the arc
How is heat distributed when welding with DCEP?
a. about equally
b. the heat alternates between both
c. most of the heat is directed to the electrode
d. most of the heat is directed to the work - CORRECT ANSWER✅✅✅c. most of the heat is directed
to the electrode
As a general rule, the inside diameter of the gas nozzle should be
a. 5 times the electrodes diameter
b. determined by the welders personal preference
c. 3 times the filler rod diameter
d. 3 times the electrode diameter - CORRECT ANSWER✅✅✅three times the electrode diameter
Pulsed current is useful for welding stainless steel because it - CORRECT ANSWER✅✅✅produces less
heat input then steady current
Pulsed current is useful for welding out of position because - CORRECT ANSWER✅✅✅the weld pool
is easier to control
The shielding gas most commonly used for welding low carbon steel with GTAW is - CORRECT
ANSWER✅✅✅argon
To break up the oxide coating from aluminum prior to welding you should - CORRECT
ANSWER✅✅✅brush
The symbol for tungsten is what? - CORRECT ANSWER✅✅✅W
Tungsten is also called what? - CORRECT ANSWER✅✅✅Wolfram
How long should the post purge (shielding gas) be allowed to flow after the welding arc is broken?
a. 1 Second for every 50 Amps
b. Post flow is a waste of gas and shouldn't be used
c. Long enough to allow the base metal and electrode to cool. - CORRECT ANSWER✅✅✅c. Long
enough to allow the base metal and electrode to cool.
When using GTAW to weld aluminum with alternating current (AC) the tip of the tungsten electrode
should be
a. ground to a 45 degree angle
b. Rounded at the tip
c. kept relatively flat - CORRECT ANSWER✅✅✅b. Rounded at the tip
Alternating Current (AC) is used for welding aluminum because
a. cleaning action
b. medium penetration of the arc
c. to increase travel speed
d. both a. and b. - CORRECT ANSWER✅✅✅d. both a. and b.
Which of the following methods is used to start the GTAW arc without touching the base metal?
a. Pulsed Wave
b. Balanced Wave Start
c. High Frequency Start
d. PolarMag Ionization - CORRECT ANSWER✅✅✅c. High Frequency start
, High Frequency current is added to alternating current to
a. extend the welding wavelength
b. maintain the arc
c. improve connection to ground - CORRECT ANSWER✅✅✅b. maintain the arc
How is heat distributed when welding with DCEP?
a. about equally
b. the heat alternates between both
c. most of the heat is directed to the electrode
d. most of the heat is directed to the work - CORRECT ANSWER✅✅✅c. most of the heat is directed
to the electrode
As a general rule, the inside diameter of the gas nozzle should be
a. 5 times the electrodes diameter
b. determined by the welders personal preference
c. 3 times the filler rod diameter
d. 3 times the electrode diameter - CORRECT ANSWER✅✅✅three times the electrode diameter
Pulsed current is useful for welding stainless steel because it - CORRECT ANSWER✅✅✅produces less
heat input then steady current
Pulsed current is useful for welding out of position because - CORRECT ANSWER✅✅✅the weld pool
is easier to control
The shielding gas most commonly used for welding low carbon steel with GTAW is - CORRECT
ANSWER✅✅✅argon
To break up the oxide coating from aluminum prior to welding you should - CORRECT
ANSWER✅✅✅brush
