Which term describes electrode positive polarity in GTAW?

• A. Direct Current Reverse Polarity
• B. Direct Current Electrode Negative
• C. Alternating Current High Frequency
• D. Direct Current Electrode Positive

Answer: (D)

In GTAW, polarity describes which electrode is connected to the positive terminal of the power source. Electrode positive polarity is called Direct Current Electrode Positive. This means the electrode is the positive side (anode) and the workpiece is negative (cathode). This setting provides certain welding characteristics, including a cleaning action on the weld surface and more wear on the tungsten electrode, which is why it’s used selectively for specific materials or surface conditions. The other terms refer to different configurations or current types (for example, electrode negative or alternating current with high frequency), but the term for electrode positive polarity is Direct Current Electrode Positive.