Question

What type of voltage input does the power company supply to the welding machine?

1) AC voltage
2) DC voltage
3) Both AC and DC voltage
4) Variable voltage

Answer 1

The power company supplies alternating current (AC) voltage to a welding machine, which often converts it to direct current (DC) for welding purposes.

Step-by-step explanation:

The power company supplies alternating current (AC) voltage to a welding machine. This AC voltage is the type of electric charge that periodically reverses direction. The power grid provides this alternating potential when a device, such as a welding machine, is plugged into a wall socket. The voltage supplied is standardized in different regions, with common values being 120 V at 60 Hz in the United States and 220 V at 50 Hz in Europe. Welding machines typically convert this AC voltage to a more stable DC voltage for the actual welding process, as DC voltage provides a consistent current that is beneficial for the quality of the welds.