29103-15 Plasma Arc Cutting

Front

In plasma-arc cutting, plasma is created by _____?

Back

superheating gas in an electric arc

Front

In most cases, plasma-arc cutting is _____?

Back

faster and more efficient than other cutting methods

Front

Which of the following PPE is considered optional for plasma-arc cutting? Hearing protection, Safety glasses, High-top shoes or boots

Back

A full leather hood

Front

Which of the following safety statements related to plasma-arc cutting is true? A hot-work permit is not required for plasma-arc cutting due to the nature of the process. Both methane and propane are lighter than air and rise quickly from the work area if released. Never carry matches or gas-filled lighters in your pockets. Unlike oxyfuel cutting, a vessel can be cut safely with plasma regardless of its contents.

Back

Never carry matches or gas-filled lighters in your pockets.

Front

The simplest plasma-arc cutting units use filtered _____?

Back

compressed air

Front

Industrial plasma cutting units can cut carbon steel up to _____.

Back

3" thick

Front

The most common plasma-arc cutting torch uses _____?

Back

a pilot arc with the transferred arc process

Front

The typical plasma arc cutting torch contains a _____: deflector, retaining cup, extended nozzle, and extended electrode; gouge shield, retaining cup, gouging nozzle, and standard bronze electrode; deflector, gouge shield, retaining cup, and copper electrode; retaining cup, copper electrode with a hafnium or thoriated tungsten insert, gas swirl ring, and nozzle.

Back

retaining cup, copper electrode with a hafnium or thoriated tungsten insert, gas swirl ring, and nozzle

Front

The term standoff distance refers to the _____.

Back

distance between the torch tip and the workpiece

Front

Most heavy-duty plasma-arc cutting systems require one gas cylinder containing the cutting gas and another containing _____?

Back

shielding or cooling gas