CWB Module 6 ELECTRODES AND CONSUMABLES QUESTIONS AND ANSWERS RATED A+ 2024/2025

CWB Module 6 ELECTRODES AND
CONSUMABLES

EXAM PRACTICE
Today, most mild metallic electrodes have a cord core composed of?
A) rimmed steel
B)semi-killed metal
c) completely killed metal
d)bloodless-rolled steel - ANSfully killed metallic

EXAM PRACTICE
In medium coated electrodes, the proportion of the electrode weight derived from the coating is:
a)10-25%
b)20-35%
c)25-forty%
d)25-fifty five% - ANS20-35%

EXAM PRACTICE
The foremost characteristic of slag do no longer consist of:

a)slowing the critical cooling charge of the weld
b)protecting the weld metal from infection
c)lowering the amount of oxygen and other impurities in the weld
d) controlling the bead shape and smoothness - ANSa) slowing the critical cooling rate of the
weld

EXAM PRACTICE
An electrode that is for use with DC electrode superb modern only is:

a)E4313
b)E4910
c)E4918
d)E4924 - ANSb E4910

EXAM PRACTICE
The addition of cellulose to an electrode coating will:

a) improve the welds ductility
b) reduce the weld's ductility
c) produce small volumes of gases like CO2 and H2

, d) produce a low-hydrogen type weld deposit - ANSa) improves the welds ductility

EXAM PRACTICE
According to CSA W48, the minimum yield strength required via the as-welded deposit soild
carbon metal filler metals for gas shielded arc welding is:

a)340MPa
b)400MPa
c)430MPa
d)490MPa - ANSb)400MPa

EXAM PRACTICE
The effect toughness of the weld deposit required for the B-G 49A 3C G6 (ER49S-6) electrode
is :

a) no longer distinct
b) 27J at 0 Celsius
c) 27J at -20 Celsius
d) 27J at -30 Celsius - ANSd) 27J at -30 Celsius

EXAM PRACTICE
The following isn't a first-rate category of gas defensive tubular electrodes:

a) cellulose kinds
b)rutile sorts
c)fundamental kinds
d)steel cored types - ANSa) Cellulose types

EXAM PRACTICE
Generally, as the percentage of carbon dioxide in an argon fuel mixture decreases, the very last
weld deposit could have:

a) extended electricity properties because of a higher manganese and silicone content material
b) multiplied energy residences due to a decrease manganese and silicone content
c) reduced energy houses because of a higher manganese and silicone content
d)reduced strength homes because of a lower manganese and silicone content -
ANSa)elevated energy homes because of a higher manganese and silicone content material

EXAM PRACTICE
The result of expanded nitrogen content inside the final weld deposit can be

a) cracking
b) undercut
c) bad bead look