Which of the following outputs can a Rectifier Unit deliver?

A Rectifier Unit is designed to convert alternating current (AC) to direct current (DC). This unit can produce various forms of DC output, including Direct Current Straight Polarity (DCSP) and Direct Current Reverse Polarity (DCRP).

DCSP is used in different welding applications where the electrode is connected to the positive terminal, enhancing penetration and providing a stable arc. Conversely, DCRP is utilized for applications requiring the electrode to be connected to the negative terminal, which can result in a cleaner weld and less spatter.

The ability of a Rectifier Unit to deliver all three outputs—AC, DCSP, and DCRP—makes it versatile for various welding processes and techniques, catering to specific requirements in welding tasks. In contrast, the other options provided do not capture this full range of outputs offered by a Rectifier Unit, thus making them incomplete or less accurate.