Welding Vocabulary: Terms and
Definitions in Final Exam| Correctly
Solved 2025
Current that flows in one direction and does not reverse its direction of flow. Direct Current
(DC)
The amount of electricity flowing past a point in a conductor every second. Current
The number of minutes out of a 10-minute time period an arc welding machine can be operated
at maximum rated output. Duty Cycle
The direction of current flow through a welding circuit when the electrode lead is connected to a
positive terminal and the work lead is connected to a negative terminal to a DC welding
machine. Also called direct current, reverse polarity (DCRP). Direct Current Electrode
Positive (DCEP)
The physical gap between the end of the electrode and the base metal. The physical gap causes
heat due to resistance of current flow and arc rays. Arc
What is the purpose of the flux coating on a welding electrode?
To produce shielding gas and stabilize the arc.
What distinguishes spray transfer from other transfer methods in GMAW?
1
, It produces minimal spatter and is ideal for welding thicker metals in flat or horizontal
positions.
What property measures a material’s ability to withstand forces that attempt to pull it apart?
Tensile strength.
What is the role of arc stabilizers in welding?
To provide smoother arc starts and reduce turbulence in the weld puddle.
Why is alternating current (AC) commonly used in welding?
It provides better penetration for thicker materials.
Which welding technique is characterized by the electrode repeatedly touching the base metal
during the process?
Short circuit transfer.
What type of welding is used to temporarily hold parts together before the final weld?
Tack welding.
What is the main difference between arc welding and spot welding?
Arc welding uses a continuous arc, while spot welding joins materials at multiple separate
points.
2
, Why is shielding gas essential in gas metal arc welding?
It prevents atmospheric contamination of the weld pool.
What happens when amperage is too low during a welding process?
The arc may extinguish, leading to insufficient penetration.
What is the purpose of an adaptive hot start in stick welding?
To automatically increase amperage at arc initiation and prevent electrode sticking.
What is the benefit of air carbon arc cutting (CAC-A)?
It allows precise cutting of metals by melting them with a carbon electrode and forced air.
Which arc transfer method is most suitable for welding in all positions?
Short circuit transfer.
How does arc control (dig) prevent electrode sticking?
It provides additional amperage during low-voltage conditions.
What type of welding technique is used to join overlapping materials with small contact areas?
Spot welding.
3
Definitions in Final Exam| Correctly
Solved 2025
Current that flows in one direction and does not reverse its direction of flow. Direct Current
(DC)
The amount of electricity flowing past a point in a conductor every second. Current
The number of minutes out of a 10-minute time period an arc welding machine can be operated
at maximum rated output. Duty Cycle
The direction of current flow through a welding circuit when the electrode lead is connected to a
positive terminal and the work lead is connected to a negative terminal to a DC welding
machine. Also called direct current, reverse polarity (DCRP). Direct Current Electrode
Positive (DCEP)
The physical gap between the end of the electrode and the base metal. The physical gap causes
heat due to resistance of current flow and arc rays. Arc
What is the purpose of the flux coating on a welding electrode?
To produce shielding gas and stabilize the arc.
What distinguishes spray transfer from other transfer methods in GMAW?
1
, It produces minimal spatter and is ideal for welding thicker metals in flat or horizontal
positions.
What property measures a material’s ability to withstand forces that attempt to pull it apart?
Tensile strength.
What is the role of arc stabilizers in welding?
To provide smoother arc starts and reduce turbulence in the weld puddle.
Why is alternating current (AC) commonly used in welding?
It provides better penetration for thicker materials.
Which welding technique is characterized by the electrode repeatedly touching the base metal
during the process?
Short circuit transfer.
What type of welding is used to temporarily hold parts together before the final weld?
Tack welding.
What is the main difference between arc welding and spot welding?
Arc welding uses a continuous arc, while spot welding joins materials at multiple separate
points.
2
, Why is shielding gas essential in gas metal arc welding?
It prevents atmospheric contamination of the weld pool.
What happens when amperage is too low during a welding process?
The arc may extinguish, leading to insufficient penetration.
What is the purpose of an adaptive hot start in stick welding?
To automatically increase amperage at arc initiation and prevent electrode sticking.
What is the benefit of air carbon arc cutting (CAC-A)?
It allows precise cutting of metals by melting them with a carbon electrode and forced air.
Which arc transfer method is most suitable for welding in all positions?
Short circuit transfer.
How does arc control (dig) prevent electrode sticking?
It provides additional amperage during low-voltage conditions.
What type of welding technique is used to join overlapping materials with small contact areas?
Spot welding.
3
