318 / | HD | ELECTRICITY: MOTIVE POWER SYSTEMS |
34 | DF | PLURAL, DIVERSE OR DIVERSELY CONTROLLED ELECTRIC MOTORS {22} |
41 | ![]() | .~ Having electrical synchronizing interconnections {3} |
42 | DF | .~.~> Between windings on auxiliary dynamo-electric machines |
43 | DF | .~.~> D.C. or A.C. commutator motors with slip rings |
44 | DF | .~.~> Between induction motor secondaries |