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 ____ have the advantage of being able to adjust the shape of the AC wave shape. 

If you were welding thin aluminum with a heavy oxide layer, you should set the wave balance to more ____.

Low voltage circuits are desirable for welding because ____. 

When welding titanium or zirconium, the GTAW process is ideal because ____.

Which of the following base metals should be welded with AC polarity?

One of the biggest advantages of GTAW is the ability to weld very thin metals, using amperages as low as ____.

The GTAW process was invented to improve welding on ____, which proved valuable for aircraft production during World War II. 

Which polarity is used for most metals, including mild and stainless steel?

In comparison to the other arc welding processes, the ____ pose(s) a limitation for the GTAW process.

A main advantage of the GTAW process is ____ for all weldable metals and alloys.