Although shielding gases are not toxic, they _____.
a. are highly explosive
b. can decompose into toxic gases
c. can displace oxygen when released in a large quantity
d. cause rapid metal corrosion
[Ques. 2] For the root pass on pipe in the 2G position, the gun should be at a 10- to 15-degree _____.
a. pass angle
b. work angle
c. push angle
d. drag angle
[Ques. 3] After a root pass has been applied, any excess buildup or undercut should be removed by _____.
a. increasing the amperage of the welder during the hot pass
b. grinding the face of the root pass with the edge of a grinding disk
c. grinding away narrow strips of material with a cutoff wheel
d. carefully heating and cutting away the excess with a torch
[Ques. 4] To ensure proper penetration on the remaining passes of GMAW welds, where should the electrode wire be
kept in relation to the weld puddle?
a. Centered in the puddle
b. Just above the puddle
c. At the trailing edge of the puddle
d. At the leading edge of the puddle
[Ques. 5] When making the root pass on pipe using GMAW in the 1G-ROTATED position, the gun work angle should
be maintained at _____.
a. 0 degrees
b. 45 degrees
c. 60 degrees
d. 75 degrees
Quick Reply
