Question 1

Which of the following is true of wire electrodes?

Accepted Answer

A)   They must be wrapped in sealed plastic bags.
B)   Some wire electrodes require storage in an electric rod oven.
C)   Electrodes should never be wrapped in paper.
D)   They should not be shipped in cardboard boxes.E) A) and B)
F) A) and C) B

Question 2

​What is the term sometimes used to refer to refractory fluxes?

Accepted Answer

A)   ​lime-based
B)   ​gas forming
C)   ​fast-freeze
D)   ​slag formersE) A) and B)
F) A) and C)

Question 3

If you feed out ten feet of wire electrode and cut it off, and then lay it on the floor where it forms a circle, it does not lay flat.One end is higher than the other, and this height is known as the ____________________ of the wire.

Accepted Answer

The answer of If you feed out ten feet of...

Question 4

In FCAW, atmospheric shielding is ____.

Accepted Answer

A)   provided solely by flux sealed within the tubular electrode
B)   provided completely through a nozzle in the same way as GMAW
C)   not necessary
D)   provided by flux sealed within the tubular electrode, but extra shielding may be supplied through a nozzle as in GMAWE) C) and D)
F) A) and D)

Question 5

​What can be added to FCAW electrode fluxes to affect the arc resistance?

Accepted Answer

A)   ​deoxidizers
B)   ​arc stabilizers
C)   ​alloying elements
D)   ​slag formersE) None of the above
F) All of the above

Question 6

____ rapidly expand and push the surrounding air away from the molten weld pool.

Accepted Answer

A)   Oxides
B)   Alloying elements
C)   Slag formers
D)   Gas formersE) A) and D)
F) All of the above

Question 7

Which of the following is true of FCAW?

Accepted Answer

A)   When bevels are cut, the joint-included angle must be larger than 35 percent.
B)   The addition of deoxidizers eliminates most of the precleaning required.
C)   Welds cannot be made on plates with mill scale.
D)   Edge-beveling preparation is required on all joints up to 1/2 inch.E) All of the above
F) B) and D)

Question 8

Atmospheric contamination of molten weld metal occurs ____.

Accepted Answer

A)   as it travels across the arc gap and within the pool before it solidifies
B)   after it solidifies
C)   infrequently
D)   when the atmosphere reacts with the flux inside the electrodeE) A) and C)
F) B) and D)

Question 9

​How is the amperage adjusted on a FCA welding machine?

Accepted Answer

A)   ​By changing the voltage setting on the welder.
B)   ​You move the welding lead from one amperage setting to the next amperage setting.
C)   ​Changes in the wire feed speed automatically change the amperage.
D)   ​The amperage is pre-set by the electrician and cannot be adjusted in the shop.E) B) and C)
F) A) and B)

Question 10

The most popular electrode diameters range from ____ to ____.

Accepted Answer

A)   .035 inch, 3/32 inch
B)   .030 inch, 5/32 inch
C)   .030 inch, .035 inch
D)   3/32 inch, 5/32 inchE) A) and D)
F) A) and C)

Question 11

Summarize the advantages and disadvantages of the forehand technique.

Accepted Answer

The advantages of using the forehand wel...

Question 12

FCA welding deposition rates of more than ____ lb./hr.of weld metal are possible.

Accepted Answer

A)   10
B)   15
C)   25
D)   50E) None of the above
F) All of the above

Question 13

​What device can be added to a FCA welding gun to help control fumes?

Accepted Answer

A)   ​Smoke extraction nozzle.
B)   ​Filter screen.
C)   ​Small fan.
D)   ​Dust mask.E) All of the above
F) A) and B)

Question 14

Which of the following is true of making high-quality welds?

Accepted Answer

A)   It is affected by the weather.
B)   Hydrogen entrapment ensures the weld will be high quality.
C)   Evaporating moisture helps prevent porosity.
D)   Humidity draws moisture out of the weld zone.E) B) and D)
F) A) and B)

Question 15

When an externally supplied shielding gas is added to provide the needed protection of the molten weld pool, it is called ____________________.

Accepted Answer

The answer of When an externally supplied shielding gas is...

Question 16

Which of the following is true of lime-based flux?

Accepted Answer

A)   It is acidic.
B)   It is generally unsuitable for out-of-position welding.
C)   It produces a stable, smooth arc.
D)   It produces less spatter.E) A) and D)
F) None of the above

Question 17

In FCAW ____ % of the electrode is used.

Accepted Answer

A)   11
B)   50
C)   70
D)   nearly 100E) B) and D)
F) A) and C) D

Question 18

____________________ controls the bead shape by serving as a dam or mold, and also serves as a blanket to slow the weld's cooling rate, which improves its physical properties.

Accepted Answer

The answer of ____________________ controls the bead shape by serving...

Question 19

Explain how a fast travel speed can cause undercut.

Accepted Answer

Fast travel speeds deposit less filler m...

Question 20

The addition of ____ gives FCAW the high level of reliability needed for welding on boilers, pressure vessels, and structural steel.

Accepted Answer

A)   flux
B)   small diameter electrodes
C)   slags
D)   bevelsE) A) and C)
F) None of the above A

Exam 12: Flux Cored Arc Welding Equipment, Setup, and Operation

Which of the following is true of wire electrodes?

Correct AnswerverifiedB

​What is the term sometimes used to refer to refractory fluxes?

Correct AnswerverifiedShow Answer

If you feed out ten feet of wire electrode and cut it off, and then lay it on the floor where it forms a circle, it does not lay flat.One end is higher than the other, and this height is known as the ____________________ of the wire.

Correct AnswerverifiedShow Answer

In FCAW, atmospheric shielding is ____.

Correct AnswerverifiedShow Answer

​What can be added to FCAW electrode fluxes to affect the arc resistance?

Correct AnswerverifiedShow Answer

____ rapidly expand and push the surrounding air away from the molten weld pool.

Correct AnswerverifiedShow Answer

Which of the following is true of FCAW?

Correct AnswerverifiedShow Answer

Atmospheric contamination of molten weld metal occurs ____.

Correct AnswerverifiedShow Answer

​How is the amperage adjusted on a FCA welding machine?

Correct AnswerverifiedShow Answer

The most popular electrode diameters range from ____ to ____.

Correct AnswerverifiedShow Answer

Summarize the advantages and disadvantages of the forehand technique.

Correct AnswerverifiedThe advantages of using the forehand wel...View AnswerShow Answer

FCA welding deposition rates of more than ____ lb./hr.of weld metal are possible.

Correct AnswerverifiedShow Answer

​What device can be added to a FCA welding gun to help control fumes?

Correct AnswerverifiedShow Answer

Which of the following is true of making high-quality welds?

Correct AnswerverifiedShow Answer

When an externally supplied shielding gas is added to provide the needed protection of the molten weld pool, it is called ____________________.

Correct AnswerverifiedShow Answer

Which of the following is true of lime-based flux?

Correct AnswerverifiedShow Answer

In FCAW ____ % of the electrode is used.

Correct AnswerverifiedD

____________________ controls the bead shape by serving as a dam or mold, and also serves as a blanket to slow the weld's cooling rate, which improves its physical properties.

Correct AnswerverifiedShow Answer

Explain how a fast travel speed can cause undercut.

Correct AnswerverifiedFast travel speeds deposit less filler m...View AnswerShow Answer

The addition of ____ gives FCAW the high level of reliability needed for welding on boilers, pressure vessels, and structural steel.

Correct AnswerverifiedA

Correct Answer
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B

What is the term sometimes used to refer to refractory fluxes?

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What can be added to FCAW electrode fluxes to affect the arc resistance?

Correct Answer
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How is the amperage adjusted on a FCA welding machine?

Correct Answer
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The most popular electrode diameters range from to .

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The advantages of using the forehand wel...
View Answer

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What device can be added to a FCA welding gun to help control fumes?

Correct Answer
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D

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Fast travel speeds deposit less filler m...
View Answer

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A