INDEX. 



355 



Load losses, Institute rule for esti- 

 mating, 72 

 Loading back, a generator, 55 



a transformer, 177 

 Local armature reaction, 74, 306 

 Long shunt, compound generator, 21 



Magnetic flux, 2, 16 



Magnetic leakage in transformers, 137 



Magnetic shunt, potential regulator, 

 252 



Magnetic units, 16 



Magnetization curve, see Character- 

 istics 



Magneto-generators, 4 



Magnetomotive force method of al- 

 ternator testing, 75, 91 

 method for synchronous motors, 



307 



Maximum efficiency, in motors, 49, 56 

 in induction motors, 282 

 in transformers, 167 

 Maximum torque, in induction mo- 

 tors, 260, 282 

 Maxwell, unit defined, 16 

 McAllister, A. S., on changing from 

 3-phase to 6-phase converters. 

 211 



on equivalent single-phase quan- 

 tities, 212 



on measuring torque, 40, 347 

 on power factor of unbalanced 



systems, 223 



on synchronous motors, 316, 320 

 on 2- to 6-phase transformation, 



248 



Mercury arc rectifier, 322 

 Mesh-connected systems, 196, 197, 211 

 Mesh method of representing alter- 

 nating currents and electromotive 

 forces, 216 



Metcalfe, G. R., on alternating cur- 

 rent potential regulators, 252 

 Michelson, A. A., on wave analysis, 



339 



Monocyclic transformation, 246 

 Moody, W. S., on alternating current 



feeder regulators, 252 

 Mordey, W. M., on divided armature 

 method of alternator testing, 98 

 on separation of losses in motors, 



So 



Motor generators, 54, 321 

 Motors, armature reactions in, 31 

 asynchronous, 62 

 best frequency for induction, 64 

 best frequency for series, 64 

 brush position in, 31 



Motors, compound wound, 4 



copper losses in, 46 



damage of, by field discharge, 35 



differential wound, 4 



effect of breaking field of, when 

 running, 34 



efficiency of, by the measurement 

 of losses, 41-61 



interpole, 33 



iron losses in, 46 



operation and speed characteris- 

 tics of, 27-40 



rotation losses in, analyzed, 50 



separation of losses in, 51-54 



series wound, 4 



shunt wound, 4 



speed control of, 32 



speed equation of, 30 



speed of shunt, 31 



speed regulation of, 37 



stopping of, 34 



synchronous, see Synchronous 



torque in, 28, 30 

 Motor generator, efficiency of, 54 

 Motor starters, automatic release, 34 



multiple switch, 34 

 Multispeed induction motors, 276 

 Multipliers, for ammeters, 149 



for voltmeters, 149 



for wattmeters, 149 



Neutral position of brushes, 6 



Noeggerath, acyclic homopolar dy- 

 namos, 3 



No-load saturation curve, see Char- 

 acteristics 



Non-inductive circuit, 103 



Notation for polyphase circuits, 215 



O-curves for synchronous motor, 315 

 Oersted, unit defined, 16 

 Odd harmonics, 331 

 Open coil armature, 3 

 Open delta in 3-phase system, 197, 

 209 



Pail forge, 347 



Parallel operation of generators, 345 

 Parallel winding, 3 

 Peripheral speed, of armatures, 6 

 Permutators, 322 

 Perry, J., on wave analysis, 339 

 Phase splitters, 264, 266 

 Phase wound induction motors, 260 

 Pierce, C. A., on harmonic analyzer, 

 339, 349 



