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Welding CAC-A

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

The CAC-A process uses a high current electric arc between the base metal and the end of an

a)

Carbon graphite electrode

b)

Pencil Graphite

c)

Don't know

d)

Pen ink

2.

Electrodes designed for CAC-A gouging contain a rare earth

a)

Glass particles

b)

Water based zinc

c)

Arc stabilizing metal

d)

Charcoal to heat metal

3.

The most common type of carbon electrodes are

a)

Round Electrode

b)

Don't know

c)

Triangular

d)

Split

4.

To prevent overheating the electrode tip to V-groove head should be no farther than

a)

Don't know

b)

6"

c)

1"

d)

17.25"

5.

Compressed air is supplied to the torch through a hose attached to a fitting on the

a)

On the torch tip

b)

Don't know

c)

Under the machine

d)

End of torch cable

6.

In CAC-A gouging, groove depth is influenced by the electrode

a)

Speed only

b)

Travel angle and speed

c)

Don't Know

d)

Angle only

7.

Dross or carbon deposits left on a surface to be welded on will combine with the base metal to form

a)

Stronger welds

b)

Oxidation

c)

Don't know

d)

Hard brittle zones and porosity

8.

Torches with special washing heads in which the air jet orifices are located on only one side of the electrode are limited to cutting from

a)

9 Directions

b)

1 Directions

c)

4 Directions

d)

7 Directions

9.

Light duty gouging or cutting is typically done with a

a)

200 amp machine

b)

30 amp machine

c)

1000 amp machine

d)

500 amp machine

10.

The airflow rate on a heavy duty machine can be rated up to

a)

10 CFM

b)

50 CFM

c)

20 CFM

d)

5 CFM