Question 1

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

Question 2

GMA welding machines have ____ duty cycle.

Accepted Answer

A)  20 percent 
B)  60 percent 
C)  80 percent 
D)  100 percent 
A)  20 percent 
B)  60 percent 
C)  80 percent 
D)  100 percent D

Question 3

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. 
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. B

Question 4

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 5

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 6

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. 
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.

Question 7

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

Accepted Answer

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

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) 
A)  1/2 in. (13 mm) 
B)  5/16in. (8 mm) 
C)  1/4 in. (6 mm) 
D)  1/8 in. (3 mm)

Question 9

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. 
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.

Question 10

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. 
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.

Question 11

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

Accepted Answer

The power supply is most critical. It mu

Question 12

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

Question 13

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 14

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

Accepted Answer

A)  OS1U1B12S1U1B0(Oxygen) 
B)  COS1U1B12S1U1B0(Carbon dioxide) 
C)  He (Helium) 
D)  N (Nitrogen) 
A)  OS1U1B12S1U1B0(Oxygen) 
B)  COS1U1B12S1U1B0(Carbon dioxide) 
C)  He (Helium) 
D)  N (Nitrogen)

Question 15

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...

Question 16

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

Question 17

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. 
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.

Question 18

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 19

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 alloys 
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 alloys

Question 20

____ is a series of ridges cut into the groove.

Accepted Answer

A)  Ridging 
B)  Smoothing 
C)  Knurling 
D)  V-grooving 
A)  Ridging 
B)  Smoothing 
C)  Knurling 
D)  V-grooving

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

MAG is short for ____.

GMA welding machines have ____ duty cycle.

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?

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

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

Which of the following is true of GMA spot welding?

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

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.

Which of the following is true of perpendicular welding technique?

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

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

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

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

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

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

The shielding gas used on carbon steel is ____.

Which of the following is true of globular transfer?

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

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

____ is a series of ridges cut into the groove.

Introduction to Welding

Safety in Welding

Shielded Metal Arc Equipment, Setup, and Operation

Shielded Metal Arc Welding of Plate

Shielded Metal Arc Welding of Pipe

Shielded Metal Arc Welding Aws Sense Certification

Flame Cutting Equipment, Setup, and Operation

Plasma Arc Cutting Equipment, Setup, and Operation

Related Cutting Processes

Gas Metal Arc Welding

Flux Cored Arc Welding Equipment, Setup, and Operation

Flux Cored Arc Welding

Gas Metal Arc and Flux Cored Arc Welding of Pipe

Gas Metal Arc and Flux Cored Arc Welding Aws Sense Certification

Gas Tungsten Arc Welding Equipment, Setup, and Operation

Gas Tungsten Arc Welding of Plate

Gas Tungsten Arc Welding of Pipe

Gas Tungsten Arc Welding Plate and Pipe Aws Sense Certification

Shop Math and Weld Cost

Reading Technical Drawings

Welding Joint Design and Welding Symbols

Fabricating Techniques and Practices

Welding Codes and Standards

Testing and Inspection

Welding Metallurgy

Weldability of Metals

Filler Metal Selection

Welding Automation and Robotics

Other Welding Processes

Oxyfuel Welding Equipment, Setup, and Operation

Oxyacetylene Welding and Brazing, Braze Welding, and Soldering

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