Question 1

In the pulsed-arc metal transfer current cycle, ____ is a function of the time it takes the magnetic field in the transformer to collapse once the coil is de-energized.

Accepted Answer

A)   step-off current
B)   high current time
C)   ramp up
D)   ramp downE) All of the above
F) None of the above

Question 2

In the pulsed-arc metal transfer current cycle, ____ refers to how the electric current in a transformer takes a few milliseconds to build up the magnetic field to full strength once the coil is energized.

Accepted Answer

A)   pulse width
B)   ramp down
C)   ramp up
D)   overshootE) A) and B)
F) B) and C)

Question 3

In the ____ feed system, the electrode must have enough strength to be pushed through the conduit without kinking.

Accepted Answer

A)   push-type
B)   pull-type
C)   push-pull-type
D)   linearE) C) and D)
F) B) and C)

Question 4

When the GMAW-S process is properly tuned, what is the approximate rate of its cycling?

Accepted Answer

A)   Overshoot
B)   Ramp up
C)   High pulse current
D)   20 to 200 times per secondE) All of the above
F) B) and C)

Question 5

Which of the following is true of axial spray transfers using high current settings?

Accepted Answer

A)   Higher currents are needed with smaller diameter wires.
B)   High current aids welding sheet metal because the high heat cuts through sheet metal.
C)   High current settings may cause the weld to be difficult to control in out-of-position welds.
D)   The need for higher current removes some restrictions on the process.E) B) and D)
F) None of the above

Question 6

Explain the modulated current metal transfer process.

Accepted Answer

In the modulated current process a senso...

Question 7

Explain how to measure the wire-feed ipm.

Accepted Answer

To accurately measure wire-feed ipm, sni...

Question 8

GMAW-P is a ____________________ system that interlocks the power supply and wire feeder.

Accepted Answer

The answer of GMAW-P is a ____________________ system that interlocks...

Question 9

The modulated current transfer process can be used to make code quality root welds ______.

Accepted Answer

A)   only if the root face is 1/8 in (3 mm)  and the root opening is 7/32 in. (2.7 mm) 
B)   when the root face is twice the size of the root opening but less than 5/32 in (4 mm) 
C)   even if the root opening and root face may vary as much as the code might allow
D)   only in ferrous (steel)  alloysE) None of the above
F) A) and D)

Question 10

Modulated current metal transfer uses an extremely modified version of _________.

Accepted Answer

The answer of Modulated current metal transfer uses an extremely...

Question 11

In axial spray metal transfer, the shielding gas is usually a mixture of ____.

Accepted Answer

A)   95% to 98% argon and 2% to 5% oxygen
B)   2% to 5% argon and 95% to 98% oxygen
C)   50% argon and 50% oxygen
D)   5% argon and 95% oxygenE) A) and B)
F) None of the above

Question 12

As much as ____ can be added to the argon to increase the power in the arc without affecting the desirable qualities of the spray mode.

Accepted Answer

A)   10% oxygen
B)   20% nitrogen
C)   50% carbon dioxide
D)   80% heliumE) A) and C)
F) A) and B)

Question 13

The purpose of the ____ is to provide a steady and reliable supply of wire to the weld.

Accepted Answer

A)   power source
B)   electrode feeder
C)   electrode conduit
D)   welding gunE) C) and D)
F) A) and C)

Question 14

The ____________________ rate, measured in inches per minute or pounds per hour, is the rate at which the arc consumes the wire.

Accepted Answer

The answer of The ____________________ rate, measured in inches per...

Question 15

The rate of voltage decrease as the amperage increases within the working range is known as ____________________.

Accepted Answer

The answer of The rate of voltage decrease as the...

Question 16

GMAW power supplies are ____ type machines.

Accepted Answer

A)   constant-current and constant-voltage
B)   constant-voltage and constant-potential
C)   drooping arc voltage and constant-current
D)   constant-current and constant-potentialE) B) and C)
F) A) and D)

Question 17

In the pulsed-arc metal transfer current cycle, ____ refers to the surging electrical current passing through the transformer like a wave on water.

Accepted Answer

A)   overshoot
B)   ramp up
C)   high pulse current
D)   pulse widthE) All of the above
F) C) and D)

Question 18

The ________ current of the spray mode produces good penetration and fusion, and the ____ current allows the weld pool to cool and contract slightly.

Accepted Answer

A)   DCEN, DCEP
B)   DCEP, DCEN
C)   AC DCEP
D)   high, lowE) A) and D)
F) C) and D)

Question 19

In the pulsed-arc metal transfer current cycle, ____ is the peak current that flows across the arc during the high current pulse.

Accepted Answer

A)   ramp up
B)   high pulse current
C)   high current time
D)   step-off currentE) All of the above
F) A) and D)

Question 20

The ____________________ rate is the measure of the weld metal deposited.

Accepted Answer

The answer of The ____________________ rate is the measure of...

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

In the pulsed-arc metal transfer current cycle, ____ refers to how the electric current in a transformer takes a few milliseconds to build up the magnetic field to full strength once the coil is energized.

Correct AnswerverifiedShow Answer

GMAW power supplies are ____ type machines.

Correct AnswerverifiedShow Answer

In the pulsed-arc metal transfer current cycle, ____ is a function of the time it takes the magnetic field in the transformer to collapse once the coil is de-energized.

Correct AnswerverifiedShow Answer

Explain how to measure the wire-feed ipm.

Correct AnswerverifiedTo accurately measure wire-feed ipm, sni...View AnswerShow Answer

The purpose of the ____ is to provide a steady and reliable supply of wire to the weld.

Correct AnswerverifiedShow Answer

Explain the modulated current metal transfer process.

Correct AnswerverifiedIn the modulated current process a senso...View AnswerShow Answer

Which of the following is true of axial spray transfers using high current settings?

Correct AnswerverifiedShow Answer

The ____________________ rate is the measure of the weld metal deposited.

Correct AnswerverifiedShow Answer

The ____________________ rate, measured in inches per minute or pounds per hour, is the rate at which the arc consumes the wire.

Correct AnswerverifiedShow Answer

In the ____ feed system, the electrode must have enough strength to be pushed through the conduit without kinking.

Correct AnswerverifiedShow Answer

In the pulsed-arc metal transfer current cycle, ____ is the peak current that flows across the arc during the high current pulse.

Correct AnswerverifiedShow Answer

The modulated current transfer process can be used to make code quality root welds ______.

Correct AnswerverifiedShow Answer

In axial spray metal transfer, the shielding gas is usually a mixture of ____.

Correct AnswerverifiedShow Answer

As much as ____ can be added to the argon to increase the power in the arc without affecting the desirable qualities of the spray mode.

Correct AnswerverifiedShow Answer

The rate of voltage decrease as the amperage increases within the working range is known as ____________________.

Correct AnswerverifiedShow Answer

The ________ current of the spray mode produces good penetration and fusion, and the ____ current allows the weld pool to cool and contract slightly.

Correct AnswerverifiedShow Answer

In the pulsed-arc metal transfer current cycle, ____ refers to the surging electrical current passing through the transformer like a wave on water.

Correct AnswerverifiedShow Answer

GMAW-P is a ____________________ system that interlocks the power supply and wire feeder.

Correct AnswerverifiedShow Answer

When the GMAW-S process is properly tuned, what is the approximate rate of its cycling?

Correct AnswerverifiedShow Answer

Modulated current metal transfer uses an extremely modified version of _________.

Correct AnswerverifiedShow Answer

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To accurately measure wire-feed ipm, sni...
View Answer

Correct Answer
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In the modulated current process a senso...
View Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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The ____ current of the spray mode produces good penetration and fusion, and the current allows the weld pool to cool and contract slightly.

Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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