Current
This is used to convert AC voltage to DC voltage
Rectifier/SCR/Thyristor
Name of cycles per second
Hertz
This is a small flattened area on the end of a bevel for a groove weld
Root face/Landing
These cracks are usually located in the center of the weld deposit
Longitudinal
This is a detailed listing of the rules and principles that apply to specific welded products
Welding code
DCEN is this type of polarity
Straight
The deflection of a path of an arc from its intended path by magnetic forces.
Arc blow
This is a weldable or non-weldable used behind a root opening to allow a defect-free joint
Backing
These cracks are generally the result of strains caused by thermal shrinkage acting on the heat-affected zone.
Toe cracks
This is the part of the base metal that has been altered by heating, but not melted by the heat.
Heat affected zone
This power source is smaller and provides a faster response time with more waveform control
Inverter
This is the measurement of electrical current flowing in a circuit.
Amperage
This is the measure of longitude stress we test for here
Tensile strength
This is a groove melted into the base metal inside the weld.
Undercut
When you add this to steel, it makes it harder but more brittle
Carbon
A material that will support the flow of an electrical current
Conductor
This decreases ac output
What is a step down transformer
Welding in this position is the most efficient
Flat
This is foreign matter introduced into and remaining in a weld.
Inclusion
This is the minimum distance, minus any convexity, from the root of the weld to its face.
Effective throat
Direction of electrical current flow in a DC welding circuit
Polarity
The top half of an AC sine wave is considered this
Positive
This is the groove included angle that an open root weld on a plate should be
60 degrees
Cracks in the base metal formed when layers separate.
Laminations
These are the three variables
DAILY DOUBLE
What is Process Specific, Primary and Secondary