Question

Which type of SMAW welding machine provides from both AC and DC current for welding?

a. Transformer only
b. Generator only
c. Transformer/rectifier
d. Plasma arc

Answer 1

The transformer/rectifier type welding machine provides both AC and DC current for SMAW welding, offering versatility for different welding applications.

Step-by-step explanation:

The type of Shielded Metal Arc Welding (SMAW) machine that provides both Alternating Current (AC) and Direct Current (DC) for welding is the transformer/rectifier. This type of welding machine has a transformer to change the voltage and a rectifier to convert AC into DC, so it can offer both types of current, which allows for versatility depending on the welding application. Transformer-only machines provide only AC, generators typically provide DC (though some can provide both), and plasma arc devices are used for a different type of welding altogether.