Exam 3: Shielded Metal Arc Equipment, Setup, and Operation

An advantage to ____________________ is higher current setting and longer times, which are helpful with E7018 electrodes.

Resistance to the flow of electrons produces ____.

Welding cables made of aluminum wire must be ____ would be required for copper.

____________________ is a measure of electric pressure.

____________________ is the measurement of the amount of electrical energy or power in the arc.

In a standard welding transformer, the size of the iron core is determined by ____.

The amount of heat produced by a welding arc is determined by the ____.

A(n) ____ produces AC, and a(n) ____ produces DC.

The major classifications of welding machines are ____.

____ controls the maximum gap the electrons can jump to form the arc.

A transformer with more turns of wire in the primary winding than in the secondary winding is known as a ____.

Why is it important to keep portable welders properly tuned?

A 60% duty cycle means that the machine can be used a total of ____ minutes out of every ten minutes at the maximum rated current.

In a(n) ____________________ welding machine the incoming power is changed from 60 cycles per second to several thousand cycles per second.

Portable welders often have _____ or ______ plug outlets.

____ is a measurement of the amount of electrical energy or power in the arc.

The ____ machine allows the selection of different current settings by tapping into the secondary coil at a different turn value.

The terms welding cables and ____________________ mean the same thing.

Which of the following is true of shielded metal arc welding?

An electric current is the flow of ____________________.