Exam 8: Shielded Metal Arc Equipment, Setup, and Operation

Before the invention of the inverter-type welder, each type of welding required a separate machine.

____ machines may have a large number of fixed amperes.

The terms welding cables or welding leads are used to mean the same thing.

Inverter welding machines are much smaller than other types of machines of the same ____ range.

Inverter welding machines are adjusted by turning a hand wheel that moves the internal parts closer together or farther apart.

The major classifications for welding machines are multiple coil, movable coil, and ____.

The operating voltage will vary with arc length, type of electrode being used, type of current, and ____.

Watts are calculated by multiplying voltage times ____.

A rectifier allows a current to flow in one direction only.

In ____, the electrode is negative, and the work is positive.

Voltage is the measurement of electrical pressure in the same way that pounds per square inch is a measurement of water pressure.

In alternating current, the electrons change direction every 1/120 of a second so that the electrode and work alternate from anode to ____________________.

The SMA welding machines' voltage ____________________ decreases as current increases.

An electric current is the flow of ____________________.

It is possible for alternators and generators to both use ____ to change the AC to DC for welding.

In direct-current electrode positive, the electrode is positive, and the work is negative.

Amperage controls the size of the ____________________.

Engine-powered generators are widely used for ____.

All transformers have the following three major components: the primary coil, secondary coil, and ____________________.

Open circuit voltage is the voltage at the electrode after striking an arc.