Most automatic transmissions use hydraulic electrical power to maneuver gears, combining a torque or fluid coupling converter with equipment sets that provide the auto’s preferred choice of ratios. A variety of aspects of the planetary gear set are engaged and disengaged by clutch packs, also called friction discs or plates. https://chancerspnl.blogrenanda.com/40074396/gearbox-auto-can-be-fun-for-anyone