____ are used by the power company to step up the voltage for long distance transmission. 

____ welding circuits tend to focus the electrical work in the arc rather than the transformer. 

Which polarity creates the deepest weld penetration, assuming all other variables are constant?

Increasing the frequency of the AC welding output will ____. 

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

Which of the following is a disadvantage of DCEN polarity?

The GTAW process was first developed by H.M. Hobart and P.K. Devers in ____.

Which of the following is NOT one of the differences between GTAW and other arc welding processes?

Some metals, such as ____, require complete isolation from atmospheric gases when welded.

Great Britain prospered during the Industrial Revolution, but there were also many consequences associated with industrialization. These included: