Question

question 21
alternating current (ac) is the preferred type of current for welding for smaw.
a true
b false

Explanation:

Both alternating current (AC) and direct - current (DC) can be used for Shielded Metal Arc Welding (SMAW). However, DC is often preferred as it provides more stable arcs, better control over penetration and bead shape. AC may cause more arc instability and spatter in some cases.

Answer:

B. False