Question

Shielded Metal Arc Welding process requires what type welding power sources?
Constant voltage
Constant current
Constant speed generator
Open circuit voltage

Answer 1

Shielded Metal Arc Welding (SMAW), also known as stick welding, primarily requires **constant current** power sources. This is because the process involves maintaining a stable arc length by adjusting the current as the electrode is consumed. In constant current welding, the power source automatically adjusts the voltage to maintain a relatively constant current flow, which is crucial for consistent arc stability and penetration.

So, the correct answer is **Constant current**.