INDEX 



Admittance, 131. 



primary exciting, 292. 

 stator exciting, 348. 

 Alternating - current commutator 



motors, 358. 



Alternator, induction, 225. 

 revolving armature, 224. 

 revolving field, 225. 

 three-phase, 232. 

 two-phase, 231. 



Alternators, parallel operation of, 281. 

 Aluminum, conductivity of, 76. 

 Ampere, definition, 51. 

 Analysis of induction motor by rec- 

 tangular coordinates, 348. 

 Apparent power in alternating-cur- 

 rent circuits, 117. 



Applications of direct-current motors, 

 208. 



induction motors, 346. 

 storage batteries, 220. 

 Armature copper loss, 211. 

 reactance, 253. 

 reaction in alternators, 252. 



direct-current machines, 185. 

 polyphase, 253. 

 rotary converters, 384. 

 single phase, 257. 

 resistance, 186. 

 windings, 146. 



Automatic voltage regulator for 

 alternating - current generators, 

 286. 



Auto-transformers, 317. 

 Average value of a sine wave, 101. 



B 



Batterirs, storage, 219. 

 Boosten, 221. 

 Brush-contact resistance, 176. 



Brushes, carbon, 157. 

 copper, 157. 

 current capacity, 157. 

 effect of moving the, 160. 

 for alternating - current series 

 motors, 363. 



Capacity, electrostatic, 19. 



in alternating-current circuits, 107. 

 of condensers, 18-24. 

 of transmission line, 399. 

 units of, 19. 

 Chain winding, 239. 

 Charges, equivalent, 8. 



induced, 7. 

 Charging current of transmission 



line, 403, 406, 409. 

 Charging kv.a. of transmission line, 



409. 



Circle diagram for an induction 

 motor, 340. 



construction from test, 342. 

 Circuit constants, 131. 

 Circulating currents in three-phase 



systems, 233. 

 Coercive force, 73. 

 Commutating field of repulsion 



motor, 367. 



Commutation in alternating-current 

 series motor, 362. 

 repulsion motor, 367. 

 resistance, 181. 

 voltage, 181. 



Comparison of single-phase and poly- 

 phase induction motors, 354. 

 Compensating windings, 360. 

 Compensator for three-wire generator, 



390. 



line drop, 198. 

 synchronous, 279. 



413 



