322 / | HD | ELECTRICITY: SINGLE GENERATOR SYSTEMS |
44 | DF | GENERATOR CONTROL {11} |
89 | DF | .~ With armature or primary circuit control {5} |
95 | DF | .~.~ By armature circuit impedance {2} |
97 | DF | .~.~.~ Resistance control {1} |
98 | .~.~.~.~ In circuit across brushes or in shunt to generator |