The gaps during the Commutator mean the magnetic area retains resetting Therefore the rotor is never in a position to align, however the rotor keeps trying, so we get a relentless rotation. There are often two pairs of brushes and many commutated plates, that are activated at the same time. https://ppplastic88631.popup-blog.com/34445363/5-simple-statements-about-alternator-parts-explained