INDEX. 



411 



Induction motor, general theory of, 275 

 load current of, 275 

 magnetizing current of, 275 

 mechanical power developed by, 



265 



performance curves of, 280, 282 

 rotor resistance and efficiency 



of, 264 

 single-phase, 292 



induced electromotive 



forces in, 374 

 starting of, 273 

 slip, 276 

 speed and efficiency of, 264 



control of, 268 

 starting compensator for, 267 



of, 266 

 of the polyphase synchronous 



motor, 271 

 the single-phase, 272 

 stator windings of, 254 

 the, 251 

 torque and speed relations of, 



260 

 two-phase, rotor currents in, 



376 



use of starting resistance for, 262 

 motors, rating of, 265 

 Inductivities, table of, 366 

 Inductivity of a dielectric, 366 

 Iron losses in transformers, see core 

 losses 



Kinetic energy of the electric current, 355 



Lagging current, definition of, 54 



currents, compensation for, 86 

 Leading current, definition of, 54 

 Leakage reactance of transformer, 237, 241 

 Lincoln synchronizer, the, 336 

 Load current of the induction motor, 275 



Magnetic leakage of transformer, 233 



effect of, 237 

 Magnetizing current of the induction 



motor, 275 

 of the transformer, 234 



Magnetizing current of transformers, 



203, 210 

 Measurement of alternating current, 38 



electromotive force, 38 

 of power in alternating- current cir- 

 cuits, 46 



in polyphase systems, 112 

 Measurements in alternating currents, 38 

 Mechanical and electrical analogies, 367 

 Mercury-arc rectifier, 172 

 Methods in alternating currents, 88 

 Microfarad, definition of, 366 

 Momentum of the electric current, 354 

 Motor-generator, the, 171 

 Motor, the induction, see the induction 



motor 



the repulsion, see repulsion motor 

 series, see series motor 

 the synchronous, see synchronous 

 motor 



Non-inductive circuits, 357 



Oil switches, 341 

 Oscillatory current, the, 73 



Parallel operation of alternators, 141,159 

 Phase constant of an armature winding, 



definition of, 124 

 constants of armature windings, 



table of, 124 



difference, definition of, 53 

 transformation, 225 



Plunger-type ammeters and voltmeters, 42 

 Polyphase induction motor, action of, 371 



the, 251 



power, measurement of, 1 12 

 system, balanced, no 

 the, 98 



unbalanced, no 

 transformers, 223 



Potential transformer, the, 46, 234 

 Power component of current, 64 



of electromotive force, 64 

 delivered by alternator, 32 

 expression of, in case of harmonic 

 electromotive forces and currents, 

 63 



