GMAW/FCAW FINAL UPDATED ACTUAL QUESTIONS AND CORRECT ANSWERS

GMAW/FCAW FINAL UPDATED ACTUAL QUESTIONS
AND CORRECT ANSWERS

Question:
1. Which of the following tasks is done by a machine?
A) Providing the joint travel in semiautomatic welding processes.
B) Providing the joint guidance in machine welding processes.
C) Providing the joint guidance in semiautomatic welding processes.
D) Maintaining the arc in semiautomatic welding processes.
Answer:
Maintaining the arc in semiautomatic welding processes.

Question:
2. Which of the following tasks are done by the welder?
A) Feeding the filler metal in semiautomatic welding processes.
B) Providing the joint travel in machine welding processes.
C) Providing the joint guidance in machine welding processes.
D) Maintaining the arc in automatic welding processes.
Answer:
Providing the joint guidance in machine welding processes.

Question:
3. The shielding gas used on carbon steel is ____.
A) carbon dioxide, or a mixture of carbon dioxide and argon
B) argon
C) argon, or a mixture of argon and helium
Answer:
carbon dioxide, or a mixture of carbon dioxide and argon

Question:
4. Which of the following is true of axial spray metal transfer?
A) It is rarely used by itself.
B) It transfers metal across the arc in larger droplets.
C) It involves a pulsing current.
D) There are hundreds of drops per second crossing from the wire to the base metal.
Answer:
There are hundreds of drops per second crossing from the wire to the base metal.

Question:
5. Which of the following is true of axial spray transfers using high current settings?
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.
Answer:
High current settings may cause the weld to be difficult to control in out-of-position welds.

, Question:
6. 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.
A) pulse width
B) ramp down
C) ramp up
D) overshoot
Answer:
ramp up

Question:
7. In the pulsed-arc metal transfer current cycle, ____ refers to the surging electrical current passing
through the transformer like a wave on water.
A) Overshoot
B) ramp up
C) high pulse current
D) pulse width
Answer:
Overshoot

Question:
8. 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.
A) step-off current
B) high current time
C) ramp up
D) ramp down
Answer:
ramp down

Question:
9. 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.
A) 10% oxygen
B) 20% nitrogen
C) 50% carbon dioxide
D) 80% helium
Answer:
80% helium

Question:
10. Which of the following is true of backhand welding?
A) It has good joint visibility and makes welds with less joint penetration.
B) It works well on vertical up and overhead welds.
C) It has good bead visibility and makes welds with deeper joint penetration.
D) It has a good balance between penetration and reinforcement and is used on automated welding.