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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Of the following shapes of tungsten electrodes, which would provide the deepest penetration and the narrowest bead width?
Correct Answer
60°
Typically, as the included angle of the tungsten electrode increases, the weld penetration increases and the width of the weld bead decreases.
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Of the following shapes of tungsten electrodes, which would provide the deepest penetration and the narrowest bead width?
Your Answer
Correct Answer
60°
Typically, as the included angle of the tungsten electrode increases, the weld penetration increases and the width of the weld bead decreases.
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Changes in electrode geometry can influence which of the following?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Changes in electrode geometry can influence which of the following?
Correct Answer
Weld bead shape and size
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Changes in electrode geometry can influence which of the following?
Your Answer
Correct Answer
Weld bead shape and size
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Which direction of tungsten grinding will produce optimum arc stability?
Correct Answer
A
Grinding the length of the tungsten electrode increases arc stability.
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Which direction of tungsten grinding will produce optimum arc stability?
Your Answer
Correct Answer
A
Grinding the length of the tungsten electrode increases arc stability.
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Which of the following is the most commonly used polarity for GTAW?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Which of the following is the most commonly used polarity for GTAW?
Correct Answer
Direct Current Electrode Negative (DCEN)
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Which of the following is the most commonly used polarity for GTAW?
Your Answer
Correct Answer
Direct Current Electrode Negative (DCEN)
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
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?
Correct Answer
Helium
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
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?
Your Answer
Correct Answer
Helium
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
When argon is used for shielding, the flow rate typically falls from ______.
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
When argon is used for shielding, the flow rate typically falls from ______.
Correct Answer
15 to 35 cfh
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
When argon is used for shielding, the flow rate typically falls from ______.
Your Answer
Correct Answer
15 to 35 cfh
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Shielding gas flow rates are based upon all of the following factors except_____.
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Shielding gas flow rates are based upon all of the following factors except_____.
Correct Answer
Type of electrode
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Shielding gas flow rates are based upon all of the following factors except_____.
Your Answer
Correct Answer
Type of electrode
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
When welding the root pass of a weld, what type of gas may be used to prevent contamination of the weld?
Correct Answer
Backing gas
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
When welding the root pass of a weld, what type of gas may be used to prevent contamination of the weld?
Your Answer
Correct Answer
Backing gas
Question 1 of 10
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 ______.
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
When helium or a mixture of argon and helium is used for shielding, flow rates may range from ______.
Correct Answer
30 to 50 cfh
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
When helium or a mixture of argon and helium is used for shielding, flow rates may range from ______.
Your Answer
Correct Answer
30 to 50 cfh
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Correct Answer
Low cost
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Your Answer
Correct Answer
Low cost
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Correct Answer
Lower flow rates
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Your Answer
Correct Answer
Lower flow rates
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Correct Answer
Easier arc starts
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Your Answer
Correct Answer
Easier arc starts
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Correct Answer
Lower flow rates
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
Which of the following is an advantage of using argon as a shielding gas instead of helium?
Your Answer
Correct Answer
Lower flow rates
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
What gas may be used as a backing gas for stainless steel, copper, and copper alloys?
Correct Answer
Nitrogen
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
What gas may be used as a backing gas for stainless steel, copper, and copper alloys?
Your Answer
Correct Answer
Nitrogen
Question 1 of 10
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?
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Correct!
When welding aluminum and magnesium, which shielding gas provides the best arc stability and very clean welds?
Correct Answer
Argon
Question 1 of 10
GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2
Incorrect
When welding aluminum and magnesium, which shielding gas provides the best arc stability and very clean welds?
Your Answer
Correct Answer
Argon
Question 1 of 10
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- 7/24/2014
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- 7/24/2014
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GTAW Equipment, Electrodes, and Shielding Gas: Part 2 of 2 by Fox Valley Technical College is licensed under a Creative Commons Attribution 3.0 Unported License.