PLASMA ARC CUTTING (PAC) QUESTIONS WITH
VERIFIED ANSWERS
In plasma arc cutting, plasma is created by _____. - Answers - . super heating gas in an
electric arc
In most cases, plasma arc cutting is _____. - Answers - faster and more efficient than
other cutting methods
The simplest plasma arc cutting units use filtered _____. - Answers - .compressed air
Industrial plasma cutting units can cut carbon steel up to _____. - Answers - 3" thick
The most common plasma arc cutting torch uses _____. - Answers - a pilot arc with the
transferred arc process
The typical plasma arc cutting torch contains a _____. - Answers - retaining cup, copper
electrode with a hafnium or thoriated tungsten insert, gas swirl ring, and nozzle
The term standoff distance refers to the ________. - Answers - distance between the
torch tip and the workpiece
Most heavy-duty plasma arc cutting systems require one gas cylinder containing the
cutting gas and another containing _____. - Answers - . shielding or cooling gas
Some light-duty PAC equipment has a built-in _____. - Answers - air compressor
Cutting a 2" (5 cm) aluminum plate requires a(n) _____. - Answers - high-cutting
amperage
To pierce very thin metal using plasma arc cutting, hold the torch at a _____. - Answers
- 0-degree work angle
When gas cylinders are disconnected from a plasma arc cutting unit before it is stored,
be sure to _____. - Answers - replace the cylinder caps
Sputtering or hissing of the torch is often caused by _____. - Answers - moisture
entering the unit through the air line
A full leather hood __________. - Answers - is considered optional PPE for plasma arc
cutting
VERIFIED ANSWERS
In plasma arc cutting, plasma is created by _____. - Answers - . super heating gas in an
electric arc
In most cases, plasma arc cutting is _____. - Answers - faster and more efficient than
other cutting methods
The simplest plasma arc cutting units use filtered _____. - Answers - .compressed air
Industrial plasma cutting units can cut carbon steel up to _____. - Answers - 3" thick
The most common plasma arc cutting torch uses _____. - Answers - a pilot arc with the
transferred arc process
The typical plasma arc cutting torch contains a _____. - Answers - retaining cup, copper
electrode with a hafnium or thoriated tungsten insert, gas swirl ring, and nozzle
The term standoff distance refers to the ________. - Answers - distance between the
torch tip and the workpiece
Most heavy-duty plasma arc cutting systems require one gas cylinder containing the
cutting gas and another containing _____. - Answers - . shielding or cooling gas
Some light-duty PAC equipment has a built-in _____. - Answers - air compressor
Cutting a 2" (5 cm) aluminum plate requires a(n) _____. - Answers - high-cutting
amperage
To pierce very thin metal using plasma arc cutting, hold the torch at a _____. - Answers
- 0-degree work angle
When gas cylinders are disconnected from a plasma arc cutting unit before it is stored,
be sure to _____. - Answers - replace the cylinder caps
Sputtering or hissing of the torch is often caused by _____. - Answers - moisture
entering the unit through the air line
A full leather hood __________. - Answers - is considered optional PPE for plasma arc
cutting
