Welding CDE - Terms & Misc.

Straight polarity is when:

• Work is positive and the electrode is negative
• Both the work and the electrode are positive
• The work is negative and the elctrode is positive
• Both the work and the electrode are negative

What does the term "weld metal" refer to when arc welding?

• The fused portion of base metal with filler rod
• The welded metal plate or structure
• The metal which the weld is being made on
• The process of fusing the filler rod with the base metal

Ductility refers to

• The ability of a metal to be stretched
• The ability of a metal to be hammered or rolled
• The ability of the metal to conduct electricity
• The corrosion resistance of the metal

Malleability refers to

• The ability of a metal to be hammered or rolled
• The ability of a metal to withstand a great amount of pressure
• The ability of a metal to withstand impact
• The ability of a metal to be stretched

The hear energy across an arc is produced by the

• Resistance to current flow across the arc
• Volts across the arc
• The amperage settinf on the power source
• Electrode being used

A ____ is any material which allows electricity to flow through it

• Conductor
• Carrier
• Volt
• Watt

Electrodes are classified by the

• American Welding Society
• American Welders United
• American Society for Welders
• American Welders Union

Endurance limit is an expression used for what type of testing?

• Fatigue
• Hardness
• Soundness
• Tension

The ability of a metal to absorb energy is called

• Toughness
• Strength
• Ductility
• Hardness

The point at which a metals behavior changes from elastic to plastic (onset of permanent deformation) is referred to as

• Yield strength
• Ultimate tensile strength
• Modulus of elasticity
• Young modulus