Question 1

The chemical symbol for tungsten is

Accepted Answer

W

Question 2

When using GTAW to weld Aluminum with alternating current (AC), the tip of the tungsten electrode should be

Accepted Answer

Rounded at the tip

Question 3

Method used to start the GTAW arc without touching the base metal?

Accepted Answer

Scratch start

Question 4

High Frequency current is added to alternating current to

Accepted Answer

Maintain the arc

Question 5

The shielding gas most commonly used for welding low carbon steel with GTAW is

Accepted Answer

Argon

Question 6

Filler metal with an AWS classification of ER4043 is used to weld

Accepted Answer

Aluminum

Question 7

Filler metal with an AWS classification of ER70S-X is used to weld

Accepted Answer

Carbon steel

Question 8

Filler metal with an AWS classification of ER308 is used to weld

Accepted Answer

Stainless steel

Question 9

The voltage present when the welding machine power switch is in the ON position, but no welding is taking place is called

Accepted Answer

Open circuit

Question 10

Which of the following is not an advantage of GTAW?

Accepted Answer

High deposition rate

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