CH 29 Welding

Which welding process uses flux coated stick electrodes?

• SMAW
• GMAW
• GTAW
• FCAW

What protects the molten weld pool from contamination from the atmosphere?

• high voltage
• burning flux
• melting metal
• constant current

Which of the following is true about a constant current welding machine?

• It is always on.
• The voltage will not vary with the arc length.
• The amperage remains uniform while welding.
• It cannot be used to weld different thicknesses of metal.

A step-down _______ is a welding machine that outputs AC current.

• transformer
• transducer
• conductor
• alternator

The ____ of a welding machine indicates how long it can operate at a given amperage during a ten-minute period without overheating.

• duty cycle
• load rating
• maximum workload
• minmum current

A ____ is heavy stranded copper wire that connects the power source to the electrode holder or the work.

• welding wire
• welding lead
• electrode
• load connector

An insulated clamp that holds the electrode is a(n) ____.

• wire lead or mouse
• electrode holder or stinger
• work clamp or ground
• electrode slinger

The waste product that settles on the surface of a weld bead as a brittle layer that should be removed is called ____.

• residue
• ash
• flux
• slag

Electrodes that contain heavy iron powder in their flux and produce an easily removable slag are called ____ electrodes.

• uphill
• fast freeze
• fast fill
• low carbon

Low-hydrogen electrodes are stored in a rod oven to keep them _____.

• hot
• dry
• handy
• separated