318 / | HD | ELECTRICITY: MOTIVE POWER SYSTEMS |
727 | DF | INDUCTION MOTOR SYSTEMS {12} |
739 | DF | .~ Reversing {5} |
740 | DF | .~.~ With diverse motor operation {1} |
741 | DF | .~.~.~ With braking {1} |
742 | .~.~.~.~ Electromagnetic brakes {2} | |
743 | DF | .~.~.~.~.~> Generator action |
744 | DF | .~.~.~.~.~> Plugging |