Chapter 3 Practice Test. Flashcards
Which of the following is a function of the flux coating of a SMAW electrode?
a. insulating
b. alloying
c. deoxidation
d. shielding
e. all of the above
e. all of the above
In the AWS system of SMAW electrode designations, the next to the last digit refers to:
a. impact strength
b. electrode coating
c. welding position
d. strength
e. none of the above
c. welding position
Which of the following is an incorrect statement about a SMAW electrode designated as
E7024?
a. It is a low hydrogen type.
b. The weld deposit has a minimum tensile strength of 70,000 psi.
c. It is suitable for use in the flat and horizontal fillet positions only.
d. It is an electrode for welding carbon steel.
e. none of the above
a. It is a low hydrogen type.
Of the following which is not an essential part of a typical SMAW system?
a. constant current power supply
b. wire feeder
c. covered electrode
d. electrode lead
e. work (ground) lead
b. wire feeder
Which of the following welding problems is the result of a distorted magnetic field that deflects the welding arc? a. cracks b. short circuiting c. arc blow d. insufficient welding current e. all of the above
c. arc blow
Which of the following is not considered a type of metal transfer for GMAW?
a. short circuiting
b. spray
c. globular
d. droplet
e. pulsed arc
d. droplet
Whch of the following types of metal transfer in GMAW provides the lowest amount of heat to the workpiece, and therefore prone to incomplete fusion?
a. short circuiting
b. spray
c. globular
d. droplet
e. pulsed arc
a. short circuiting
Which of the following gases can be used as shielding gases for GMAW?
a. carbon dioxide
b. argon-oxygen
c. argon-carbon dioxide
d. argon
e. all of the above
e. all of the above
See diagram
d.
pg. 3-20
Which of the following is not considered an arc welding process?
a. SMAW
b. GMAW
c. FCAW
d. ESW
e. none of the above
d. ESW
In the electrode designation system for FCAW, the second digit (1) in an electrode marked (E7 1 T-5) refers to: a. strength b. welding position c. chemical composition d. usability e. none of the above
b. welding position
Whlch of the following is not always an essential element of an FCAW system’?
a. constant voltage power supply
b. tubular electrode
c. wire feeder
d. external shielding gas
e. work (ground) lead
d. external shielding gas
What aspect of the GTAW and PAW processes is different than for the other arc welding processes? a. nonconsumable electrode b. power supply c. shielding d. all of the above e. none of the above
a. nonconsumable electrode
Shielding for the GTAW and PAW processes is primarily accomplished through the use of:
a. granular flux
b. slag
c. inert gas
d. oxygen
e. none of the above
c. inert gas
A green stripe on a tungsten electrode designates:
a. pure tungsten
b. 1 % thoriated tungsten
c. 2% thoriated tungsten.
d. zirconiated tungsten
e. none of the above
a. pure tungsten