Question

What type of welding power sources are required for the shielded metal arc welding process?

1) AC power sources
2) DC power sources
3) Both AC and DC power sources
4) None of the above

Answer 1

The shielded metal arc welding process can use both AC and DC power sources, depending on the specific welding application.

Step-by-step explanation:

The shielded metal arc welding process can use both AC and DC power sources, depending on the specific welding application. AC power sources are commonly used for welding thin materials, as they provide a balanced heat distribution and help prevent distortion. DC power sources, on the other hand, are often used for welding thicker materials, as they provide a smooth and stable arc.

For example, when welding stainless steel or aluminum, it is common to use AC power sources. However, when welding carbon steel, DC power sources are usually preferred.