Question 1

____ is very well suited for making welds on steel, steel alloys (including stainless) , nickel alloys, and most other metals other than aluminum or magnesium.

Accepted Answer

A)   Zirconium tungsten
B)   Pure tungsten
C)   Thoriated tungsten
D)   Lanthanum tungstenE) A) and C)
F) B) and C)

Question 2

​The squarewave provides the welder with a current that allows the molten weld pool to _______________.

Accepted Answer

A)   ​be cleaner and reduces the need to clean all of the oxides off of the underside of the weld joint
B)   ​flow freely onto the base metal with minimum fusion for thinner metals
C)   ​have more gas coverage of the weld at a slower flow rate
D)   ​have both deeper penetration and faster solidificationE) All of the above
F) None of the above

Question 3

In GTAW, the arc temperature is around ____ degrees Fahrenheit.

Accepted Answer

A)   3,000
B)   6,000
C)   11,000
D)   17,000E) All of the above
F) C) and D)

Question 4

​Why is an inert shielding gas required for GTA welding?

Accepted Answer

A)   ​To keep the air away from the hot tungsten and molten weld metal.
B)   ​To help remove the welding fumes to make it easier to see the weld pool.
C)   ​It helps to reduce the UV light that can cause skin burns.
D)   ​All of the aboveE) B) and C)
F) A) and B)

Question 5

____ is denser than air, so it effectively shields welds in deep grooves in the flat position.

Accepted Answer

A)   Nitrogen
B)   Helium
C)   Argon
D)   HydrogenE) B) and D)
F) B) and C)

Question 6

____ results in welds with deep penetration, and a smaller-size tungsten can be used.

Accepted Answer

A)   DCEN
B)   ACHF
C)   DCEP
D)   DCRPE) C) and D)
F) B) and C)

Question 7

Explain why the heat of the arc, which is much higher than the melting point of tungsten, does not actually melt the tungsten electrode.

Accepted Answer

The thermal conductivity of tungsten and...

Question 8

With ____, penetration and bead profile are sensitive to arc length, and the long arcs needed for feeding filler wires are more difficult to control.

Accepted Answer

A)   nitrogen
B)   argon
C)   hydrogen
D)   heliumE) C) and D)
F) B) and C)

Question 9

The ____________________ directs the shielding gas directly on the welding zone.

Accepted Answer

nozzle
cup...

Question 10

AC concentrates about ____ of its welding heat on the work and ____ on the tungsten.

Accepted Answer

A)   2/3, 1/3
B)   1/3, 2/3
C)   1/2, 1/2
D)   1/4, 3/4E) B) and D)
F) All of the above

Exam 16: Gas Tungsten Arc Welding Equipment, Setup, Operation, and Filler Metals

AC concentrates about of its welding heat on the work and on the tungsten.

Correct Answer
verified

____ is denser than air, so it effectively shields welds in deep grooves in the flat position.

Correct Answer
verified

Explain why the heat of the arc, which is much higher than the melting point of tungsten, does not actually melt the tungsten electrode.

Correct Answer
verified
The thermal conductivity of tungsten and...
View Answer

The squarewave provides the welder with a current that allows the molten weld pool to _______________.

Correct Answer
verified

____ results in welds with deep penetration, and a smaller-size tungsten can be used.

Correct Answer
verified

In GTAW, the arc temperature is around ____ degrees Fahrenheit.

Correct Answer
verified

Why is an inert shielding gas required for GTA welding?

Correct Answer
verified

____ is very well suited for making welds on steel, steel alloys (including stainless) , nickel alloys, and most other metals other than aluminum or magnesium.

Correct Answer
verified

The ____________________ directs the shielding gas directly on the welding zone.

Correct Answer
verified
nozzle
cup...
View Answer

With ____, penetration and bead profile are sensitive to arc length, and the long arcs needed for feeding filler wires are more difficult to control.

Correct Answer
verified

Exam 16: Gas Tungsten Arc Welding Equipment, Setup, Operation, and Filler Metals

AC concentrates about ____ of its welding heat on the work and ____ on the tungsten.

Correct AnswerverifiedShow Answer

____ is denser than air, so it effectively shields welds in deep grooves in the flat position.

Correct AnswerverifiedShow Answer

Explain why the heat of the arc, which is much higher than the melting point of tungsten, does not actually melt the tungsten electrode.

Correct AnswerverifiedThe thermal conductivity of tungsten and...View AnswerShow Answer

​The squarewave provides the welder with a current that allows the molten weld pool to _______________.

Correct AnswerverifiedShow Answer

____ results in welds with deep penetration, and a smaller-size tungsten can be used.

Correct AnswerverifiedShow Answer

In GTAW, the arc temperature is around ____ degrees Fahrenheit.

Correct AnswerverifiedShow Answer

​Why is an inert shielding gas required for GTA welding?

Correct AnswerverifiedShow Answer

____ is very well suited for making welds on steel, steel alloys (including stainless) , nickel alloys, and most other metals other than aluminum or magnesium.

Correct AnswerverifiedShow Answer

The ____________________ directs the shielding gas directly on the welding zone.

Correct Answerverifiednozzlecup...View AnswerShow Answer

With ____, penetration and bead profile are sensitive to arc length, and the long arcs needed for feeding filler wires are more difficult to control.

Correct AnswerverifiedShow Answer

AC concentrates about of its welding heat on the work and on the tungsten.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
The thermal conductivity of tungsten and...
View Answer

The squarewave provides the welder with a current that allows the molten weld pool to _______________.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Why is an inert shielding gas required for GTA welding?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
nozzle
cup...
View Answer

Correct Answer
verified