Question 1

The ____________________ is the distance from the contact tube to the arc measured along the wire.

Accepted Answer

The answer of The ____________________ is the distance from the...

Question 2

The shielding gas used on carbon steel is ____.

Accepted Answer

A)   helium
B)   carbon dioxide, or a mixture of carbon dioxide and argon
C)   argon
D)   argon, or a mixture of argon and heliumE) A) and B)
F) A) and C)

Question 3

Which of the following is true of perpendicular welding technique?

Accepted Answer

A)   It has a good balance between penetration and reinforcement and is used on automated welding.
B)   It has good bead visibility and makes welds with deeper joint penetration.
C)   It has good joint visibility and makes welds with less joint penetration.
D)   It works well on vertical up and overhead welds.E) A) and D)
F) A) and C)

Question 4

GMAW is almost free from spatter because it uses a mode of metal transfer called ____________________ metal transfer.

Accepted Answer

The answer of GMAW is almost free from spatter because...

Question 5

What gas is added to argon for the axial spray transfer method transfer?

Accepted Answer

A)   O2(Oxygen) 
B)   CO2(Carbon dioxide) 
C)   He (Helium) 
D)   N (Nitrogen) E) A) and C)
F) C) and D)

Question 6

Explain why the power supply is critical in the short-circuiting transfer process.

Accepted Answer

The power supply is most critical. It mu...

Question 7

Why would a welder need extra burn protection for their eyes when making an axial spray weld?

Accepted Answer

A)   To protect the eye from the increased weld spatter.
B)   To protect the eye from the increased heat produced by axial spray arc welding.
C)   The high welding current produces a great deal of UV light.
D)   The hot metal can cause infrared light burns to the eye and face.E) A) and B)
F) A) and C)

Question 8

The GMAW-S process does not produce enough heat to make quality welds in sections much thicker than ______________ unless it is used for the root pass on a grooved weld or to fill gaps in joints.

Accepted Answer

A)   1/2 in. (13 mm) 
B)   5/16in. (8 mm) 
C)   1/4 in. (6 mm) 
D)   1/8 in. (3 mm) E) None of the above
F) B) and D)

Question 9

MAG is short for ____.

Accepted Answer

A)   metal arc gas welding
B)   metal active gas welding
C)   metal action gas welding
D)   metal anion gas weldingE) B) and C)
F) C) and D) B

Question 10

The _____________ wire feed system has the advantage of being enclosed in a case.

Accepted Answer

The answer of The _____________ wire feed system has the...

Question 11

Which of the following is true of globular transfer?

Accepted Answer

A)   It is used more commonly in combination with pulsed-spray transfer.
B)   The arc's real work occurs when the current pulses above the transition current.
C)   There are hundreds of drops per second crossing from the wire to the base metal.
D)   The process requires a current level above the transition current.E) B) and D)
F) C) and D)

Question 12

Changes in the step-off current have been associated with arc stability________________.

Accepted Answer

A)   to make vertical up and overhead welds
B)   when only AC power is available for the welding current
C)   on aluminum and copper alloys
D)   for some higher electrically resistant filler metals such as stainless steel and nickel alloysE) A) and B)
F) None of the above

Question 13

What changes to the welding machine are required to change between short-circuiting and axial spray or between axial spray and buried arc transfer methods?

Accepted Answer

A)   Change the shielding gas from Ar to 100% CO2or He to Ar+O2.
B)   Make the changes in the welding machine's voltage and amperage settings.
C)   Increase the voltage.
D)   Increase the amperage.E) A) and B)
F) A) and C) B

Question 14

GMAW-P welds made on most metals other than steel use __________shielding gas.

Accepted Answer

A)   2% oxygen + 98% argon
B)   100% argon
C)   25% helium + 75% argon
D)   25%CO2+ 75% argonE) C) and D)
F) A) and C)

Question 15

Which of the following is true of GMA spot welding?

Accepted Answer

A)   Welds can only be made in thin materials.
B)   The weld cannot be made if only one side of the materials to be welded is accessible.
C)   The weld cannot be made when there is paint on the interfacing surfaces.
D)   The burning back of the thin material allows the thicker metal to be melted.E) C) and D)
F) B) and D)

Question 16

In modulated current metal transfer the wire feed speed is _____________.

Accepted Answer

The answer of In modulated current metal transfer the wire...

Question 17

GMA welding machines have ____ duty cycle.

Accepted Answer

A)   20 percent
B)   60 percent
C)   80 percent
D)   100 percentE) None of the above
F) A) and B) D

Question 18

____ is a series of ridges cut into the groove.

Accepted Answer

A)   Ridging
B)   Smoothing
C)   Knurling
D)   V-groovingE) B) and D)
F) C) and D)

Question 19

Explain why the use of GMA welding can help reduce waste of filler metals.

Accepted Answer

GMA welding's 98% deposition rate of fil...

Question 20

The relationships between current and voltage with different combinations of arc length or wire-feed speeds are called ____________________ characteristics.

Accepted Answer

The answer of The relationships between current and voltage with...

Exam 10: Gas Metal Arc Welding Equipment, Setup, and Operation

The ____________________ is the distance from the contact tube to the arc measured along the wire.

Correct AnswerverifiedShow Answer

The shielding gas used on carbon steel is ____.

Correct AnswerverifiedShow Answer

Which of the following is true of perpendicular welding technique?

Correct AnswerverifiedShow Answer

GMAW is almost free from spatter because it uses a mode of metal transfer called ____________________ metal transfer.

Correct AnswerverifiedShow Answer

What gas is added to argon for the axial spray transfer method transfer?

Correct AnswerverifiedShow Answer

Explain why the power supply is critical in the short-circuiting transfer process.

Correct AnswerverifiedThe power supply is most critical. It mu...View AnswerShow Answer

Why would a welder need extra burn protection for their eyes when making an axial spray weld?

Correct AnswerverifiedShow Answer

The GMAW-S process does not produce enough heat to make quality welds in sections much thicker than ______________ unless it is used for the root pass on a grooved weld or to fill gaps in joints.

Correct AnswerverifiedShow Answer

MAG is short for ____.

Correct AnswerverifiedB

The _____________ wire feed system has the advantage of being enclosed in a case.

Correct AnswerverifiedShow Answer

Which of the following is true of globular transfer?

Correct AnswerverifiedShow Answer

Changes in the step-off current have been associated with arc stability________________.

Correct AnswerverifiedShow Answer

What changes to the welding machine are required to change between short-circuiting and axial spray or between axial spray and buried arc transfer methods?

Correct AnswerverifiedB

GMAW-P welds made on most metals other than steel use __________shielding gas.

Correct AnswerverifiedShow Answer

Which of the following is true of GMA spot welding?

Correct AnswerverifiedShow Answer

In modulated current metal transfer the wire feed speed is _____________.

Correct AnswerverifiedShow Answer

GMA welding machines have ____ duty cycle.

Correct AnswerverifiedD

____ is a series of ridges cut into the groove.

Correct AnswerverifiedShow Answer

Explain why the use of GMA welding can help reduce waste of filler metals.

Correct AnswerverifiedGMA welding's 98% deposition rate of fil...View AnswerShow Answer

The relationships between current and voltage with different combinations of arc length or wire-feed speeds are called ____________________ characteristics.

Correct AnswerverifiedShow Answer

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The power supply is most critical. It mu...
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B

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B

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D

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GMA welding's 98% deposition rate of fil...
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