The learner will identify parts of GTAW consumables and the advantages of various shielding gases.

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Of the following shapes of tungsten electrodes, which would provide the deepest penetration and the narrowest bead width?

## Correct!

Of the following shapes of tungsten electrodes, which would provide the deepest penetration and the narrowest bead width?

### 60°

Explanation:

Typically, as the included angle of the tungsten electrode increases, the weld penetration increases and the width of the weld bead decreases.

Next Question

## Incorrect

Of the following shapes of tungsten electrodes, which would provide the deepest penetration and the narrowest bead width?

### 60°

Explanation:

Typically, as the included angle of the tungsten electrode increases, the weld penetration increases and the width of the weld bead decreases.

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Changes in electrode geometry can influence which of the following?

## Correct!

Changes in electrode geometry can influence which of the following?

Next Question

## Incorrect

Changes in electrode geometry can influence which of the following?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Which direction of tungsten grinding will produce optimum arc stability?

## Correct!

Which direction of tungsten grinding will produce optimum arc stability?

### A

Explanation:

Grinding the length of the tungsten electrode increases arc stability.

Next Question

## Incorrect

Which direction of tungsten grinding will produce optimum arc stability?

### A

Explanation:

Grinding the length of the tungsten electrode increases arc stability.

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Which of the following is the most commonly used polarity for GTAW?

## Correct!

Which of the following is the most commonly used polarity for GTAW?

Next Question

## Incorrect

Which of the following is the most commonly used polarity for GTAW?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Although argon is the most commonly used shielding gas with GTAW, which gas is sometimes used instead of argon or even mixed with argon?

## Correct!

Although argon is the most commonly used shielding gas with GTAW, which gas is sometimes used instead of argon or even mixed with argon?

Next Question

## Incorrect

Although argon is the most commonly used shielding gas with GTAW, which gas is sometimes used instead of argon or even mixed with argon?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

When argon is used for shielding, the flow rate typically falls from ______.

## Correct!

When argon is used for shielding, the flow rate typically falls from ______.

Next Question

## Incorrect

When argon is used for shielding, the flow rate typically falls from ______.

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Shielding gas flow rates are based upon all of the following factors except_____.

## Correct!

Shielding gas flow rates are based upon all of the following factors except_____.

Next Question

## Incorrect

Shielding gas flow rates are based upon all of the following factors except_____.

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

When welding the root pass of a weld, what type of gas may be used to prevent contamination of the weld?

## Correct!

When welding the root pass of a weld, what type of gas may be used to prevent contamination of the weld?

Next Question

## Incorrect

When welding the root pass of a weld, what type of gas may be used to prevent contamination of the weld?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

When helium or a mixture of argon and helium is used for shielding, flow rates may range from ______.

## Correct!

When helium or a mixture of argon and helium is used for shielding, flow rates may range from ______.

Next Question

## Incorrect

When helium or a mixture of argon and helium is used for shielding, flow rates may range from ______.

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Which of the following is an advantage of using argon as a shielding gas instead of helium?

## Correct!

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## Incorrect

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Which of the following is an advantage of using argon as a shielding gas instead of helium?

## Correct!

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## Incorrect

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Which of the following is an advantage of using argon as a shielding gas instead of helium?

## Correct!

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## Incorrect

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

Which of the following is an advantage of using argon as a shielding gas instead of helium?

## Correct!

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## Incorrect

Which of the following is an advantage of using argon as a shielding gas instead of helium?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

What gas may be used as a backing gas for stainless steel, copper, and copper alloys?

## Correct!

What gas may be used as a backing gas for stainless steel, copper, and copper alloys?

Next Question

## Incorrect

What gas may be used as a backing gas for stainless steel, copper, and copper alloys?

Next Question

## GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

When welding aluminum and magnesium, which shielding gas provides the best arc stability and very clean welds?

## Correct!

When welding aluminum and magnesium, which shielding gas provides the best arc stability and very clean welds?

Finish

## Incorrect

When welding aluminum and magnesium, which shielding gas provides the best arc stability and very clean welds?

### Argon

Finish
##### Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2

# Score

You have answered 5 of 10 questions correctly.

50%

Author
Published
7/24/2014
Last Updated
7/24/2014
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