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WLD-112 Basic Welding (Plasma Cutting)

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.
The amount of material removed by the plasma cutter is typically _______?
a)
1/16"
b)
3/8"
c)
1/8"
d)
1/2"
2.
When picking up the metal off the floor just after it has been cut you must use________?
a)
Screw Driver
b)
Gloves
c)
Pliers
d)
All the above
3.
When using the plasma cutter it should be operated in _______    ________  ________?
a)
sound proof
b)
well light area
c)
well ventilated area
d)
outdoor only
4.
After using the plasma cutter you must___________
a)
Disconnect plasma cutter
b)
Sweep floor and leave the plasma cutter in place
c)
Sweep floor 
d)
Sweep floor and disconnect the plasma cutter
5.
Before beginning to plasma cut one should?_______________
a)
Clean floor of combustibles 
b)
Clean off machine
c)
Place newspaper down on the floor
d)
All of the above
6.

The work clamp should be place close to ___________?

a)

the source of power

b)

the floor

c)

the area where you are cutting

d)

none of the above

7.
Identify the undesired material on the underside of metal which has been cut with the arc from a plasma cutter.
a)
Rust
b)
Burr
c)
Swarf
d)
Dross
8.
The torch tip should be held above the metal to be cut; between _____ and ______
a)
1/16 and 1/8
b)
1/16 and 1 inch
c)
1/2 and 1inch
d)
3/4" and 1 5/8
9.

The compressed air going into the plasma cutter should be ________ air

a)

Dry

b)

Oily

c)

Dirty

d)

Argon

10.
The four states of matter are:______, ______,________, and _________
a)
Gas, Solid, Liquid, and Plasma
b)
Liquid, Gas, Electricity, and Plasma
c)
Solid, Gas, Molecules, and Lighting
d)
Plasma only
11.
__________ ________ will remove the molten metal when plasma cutting
a)
Compressed Aluminum
b)
Electrified Cutter
c)
Compressed Air
d)
Presurized water
12.
A super heated gas is called________
a)
Vapor
b)
Liquid
c)
Solid
d)
Plasma
13.
___________ cutting is a process that cuts through electrically conductive materials by means of an accelerated jet of hot plasma. 
a)
Plasma
b)
Oxy-Acetylene
c)
Oxy- Propolene
d)
None of the above
14.
The appropriate lens darkness should be #________?
a)
#1
b)
#5
c)
#10
d)
#15
15.

When using Plasma cutter, the molten metal is removed by?

a)

A jet of air passing through the arc

b)

the oxygen in the air causing the metal to oxidize

c)

setting the work piece on edge so the molten metal can run downhill

d)

metal vaporizing from the intense arc

16.

Fumes are a potential hazard associated with Plasma cutting

a)

True

b)

false

17.

What is the metal that is inside the electrode?

a)

Tantalum

b)

Thulium

c)

Holmium

d)

Hafnium

18.

How can you make the consumables last longer?

a)

torch-to-work distance

b)

pierce height

c)

quality of your air

d)

Don’t pierce in the middle of the plate.

e)

All the above

19.

How do you know when it is time to change the Consumables?

a)

They turn colors.

b)

They make a whistling sound.

c)

The plasma won't stay lit.

d)

The hole on the cup is oblong and or the electrode has receded back to 1/16in.

20.

Dross can be reduced or eliminated completely by________________.

a)

making sure your travel speed is as slow as possible.

b)

adjusting the cutting speed to the optimum condition as prescribed in the operator’s manual.

c)

using a forward back, forward back motion.

d)

having the amps as low as possible.