samples:
Q. 240. Smaller diameter wire. Although the most common diameters of welding wire are ____” and ____”, a smaller diameter wire usually will make it easier to create a good weld.
a. .035 to .045
b. .025 to .045
c. .015 to .035
d. .045 to .025
Ans: A
Exp: Smaller diameter wire. Although the most common diameters of welding wire are .045” and .035”, a smaller diameter wire usually will make it easier to create a good weld.
Q. 241 This is a good recommendation for thinner materials; but be careful using this approach on thicker materials ______” because there may be a risk of lack of fusion.
a. >3/16
b. < 3/16
c. > 3/15
d. < 3/15
Ans: A
Exp: This is a good recommendation for thinner materials; but be careful using this approach on thicker materials >3/16” because there may be a risk of lack of fusion.
Q. 242. For most casual welders, a good rule of thumb to assure high quality welding is to change the tip after ever _____ lbs. of wire. Another point to remember about contact tips is that they should always be threaded completely into the gas diffuser and tightened prior to welding to give a smooth flow of welding current.
a. 200
b. 100
c. 400
d. 300
Ans: B
Exp: For most casual welders, a good rule of thumb to assure high quality welding is to change the tip after ever 100 lbs. of wire.