CWB Welding Inspection Level II Exam Questions and Correct Answers.

CWB Welding Inspection Level II Exam
Questions and Correct Answers
Question 1
SAW can utilize multiple electrodes fed into the same weld pool, considerably
increasing the deposition rate. Which one of the multiple wire arrangements listed
below indicates that the current path is from one electrode to another through the
weld pool?

A) Parallel electrode welding
B) Multiple arc welding (tandem welding)
C) Series arc welding
D) Triple arc welding
Correct Answer
C) Series arc welding



Question 2
Worm tracks produced using the FCAW process can be avoided by
a. using carbon dioxide shielding gas
b. increasing the contact tube to work distance
c. decreasing current and voltage
d. all of the above
Correct Answer
d. all of the above



Question 3
The purpose of a brazing flux is to _______.
a) lower the melting temperature of the filler
b) open the joint to allow room for the filler
C) clean contaminants from the joint
D) remove oxides and reduce the surface tension of the molten filler
Correct Answer
D) remove oxides and reduce the surface tension of the molten filler




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,Question 4
The GMAW, FCAW and MCAW processes have these features in common.
a. Constant current power source and constant speed wire feeder
b. Constant voltage power source and constant speed wire feeder
c. Constant current power source and variable speed wire feeder
d. Constant voltage power source and variable speed wire feeder
Correct Answer
b. Constant voltage power source and constant speed wire feeder



Question 5
Which of the following welding processes produces the least hydrogen weld metal
content?
a. SMAW
b. GTAW
c. SAW
d. FCAW
Correct Answer
b. GTAW



Question 6
An arc plasma consists of
a. atoms and gas molecules.
b. free electrons and positive ions.
c. Carbon atoms and hydrogen molecules.
d. light of a fixed wavelength
Correct Answer
b. free electrons and positive ions.




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,Question 7
The function of the ingredients in a SMAW electrode coating is to: (Multiple Choice)

A) provide a gas shield, slag covering, scavengers, arc stabilization, and additional
alloying elements
B) react with the base metal to assist in weld fusion.
C) remove rust, mill scale, and other contaminants from the surface of the joint.
D) counteract the effects of arc blow.

Correct Answer
A) provide a gas shield, slag covering, scavengers, arc stabilization, and additional
alloying elements



Question 8
The highest deposition rate in the SMAW process occurs in
a. DCEN
b. DCEP
c. AC
d. AC unbalanced
Correct Answer
a. DCEN



Question 9
Select the metals that are easily brazed. (Multiple Choice)

A) Copper and nickel
B) Aluminum and titanium
C) Tungsten and beryllium
D) Nickel and cobalt
Correct Answer
A) Copper and nickel




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, Question 10
What happens when the electrode melts?
a. surface tension
b. gravity
c. plasma jet
d. electromagnetic pinch force
e. all the above
Correct Answer
e. all the above



Question 11
Which shielding gas produces the most pronounced finger penetration for the GMAW
process?
a. Argon with 2% oxygen
b. Argon with 5% carbon dioxide
c. Argon with 25% carbon dioxide
d. Carbon dioxide
Correct Answer
a. Argon with 2% oxygen



Question 12
For the SAW process the wires and fluxes can be selected to
a. achieve high deposition rates
b. achieve high travel speeds
c. achieve specific mechanical properties
d. all of the above

Correct Answer
d. all of the above




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