SENSE Level 1 Certification Test Module 7: GTAW Questions and Answers(A+ Solution guide)

The symbol for tungsten is what? - W Tungsten is also called what? - 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. - 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 - 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. - 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 Startd. PolarMag Ionization -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 - 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 - c. most of the heat is directed to the electrode