WLD 107: TIG Final Exam Questions and Answers Fully Solved Latest Update 2025-2026
Filler metals for GTAW use the same classification system as filler metals used for GMAW. - Answers
True
Filler metal is necessary on all welds made with the GTAW process. - Answers False
DCEP allows deeper penetration than DCEN. - Answers False
A remote current control allows the welder to adjust current while welding. - Answers True
Postflow is the flow of shielding gas after the arc is extinguished. - Answers True
The chemical symbol for tungsten is W. - Answers True
When welding with DCEN, the electrode is positive and the work is negative. - Answers True
Alloyed tungsten electrodes last longer and have a higher current capacity than pure tungsten
electrodes. - Answers True
For thin materials, the diameter of the filler metal should equal the thickness of the metal to be welded
or should be slightly smaller. - Answers True
The addition of helium to argon shielding gas improves penetration. - Answers True
Filler metals for oxyacetylene can be used for GTAW as long as they are copper-coated. - Answers True
The GTAW process uses a nonconsumable tungsten electrode to supply welding current to the
workpiece. - Answers True
GTAW requires a constant-current welding power source capable of producing direct current,
alternating current, and high frequency. - Answers True
Argon is the most commonly used as a shielding gas in the GTAW process. - Answers True
The amount of electrode stickout is determined by the type of weld joint. - Answers True
The filler metal used should have the same composition as the base metal. - Answers True
Shielding gas is not required after the arc is extinguished. - Answers False
A flowmeter regulates the amount of shielding gas flowing to the torch. - Answers True
A gas nozzle directs the shielding gas from the torch to the weld area. - Answers True
Helium has a higher ionization potential than argon. - Answers True
The heated end of the filler metal should be kept in the flow of shielding gas. - Answers True
Filler metals for GTAW use the same classification system as filler metals used for GMAW. - Answers
True
Filler metal is necessary on all welds made with the GTAW process. - Answers False
DCEP allows deeper penetration than DCEN. - Answers False
A remote current control allows the welder to adjust current while welding. - Answers True
Postflow is the flow of shielding gas after the arc is extinguished. - Answers True
The chemical symbol for tungsten is W. - Answers True
When welding with DCEN, the electrode is positive and the work is negative. - Answers True
Alloyed tungsten electrodes last longer and have a higher current capacity than pure tungsten
electrodes. - Answers True
For thin materials, the diameter of the filler metal should equal the thickness of the metal to be welded
or should be slightly smaller. - Answers True
The addition of helium to argon shielding gas improves penetration. - Answers True
Filler metals for oxyacetylene can be used for GTAW as long as they are copper-coated. - Answers True
The GTAW process uses a nonconsumable tungsten electrode to supply welding current to the
workpiece. - Answers True
GTAW requires a constant-current welding power source capable of producing direct current,
alternating current, and high frequency. - Answers True
Argon is the most commonly used as a shielding gas in the GTAW process. - Answers True
The amount of electrode stickout is determined by the type of weld joint. - Answers True
The filler metal used should have the same composition as the base metal. - Answers True
Shielding gas is not required after the arc is extinguished. - Answers False
A flowmeter regulates the amount of shielding gas flowing to the torch. - Answers True
A gas nozzle directs the shielding gas from the torch to the weld area. - Answers True
Helium has a higher ionization potential than argon. - Answers True
The heated end of the filler metal should be kept in the flow of shielding gas. - Answers True
