INDEX 



293 



K 



Ferraris, Galileo, 145 



Field due to a commutated current, 



121 

 magnets, stray field of, 242 



with divided winding, 252 

 -saturation, influence of, on sta- 

 bility, 101 

 Fort Wayne Company, starting 



method, 114 

 method of current commutating, 



3 



Forces, equal electromotive, case of, 5 

 unequal electromotive, case of, 7 

 Fresnel's method of vectors, 20 

 Fundamental diagram, 177 



Generator, compounding of, to regu- 

 late supply of E. M. F., 210 

 power-factor of, 192 



Generators, compensation with respect 

 to, 86 



Gramme commutators, 115 



Graphical representation of operative 

 conditions, 20 



Guilbert, C. F., 236 



H 



Herdt, L. A., 236 

 Hobart and Punga, 236 

 Hopkinson, Dr. J., 15 



analytical theory, 15 

 Hutin and Leblanc's damper, 126 

 Hutin, on oscillations, 131 



Induction and synchronous motors, 



comparison between, 90 

 Influence of field-saturation on sta- 

 bility, 101 



of wave-form of E. M. F., 102 

 Initial synchronizing, theory of, 117 



Janet, M., 24 



Kapp type of synchronous motors, 90 



Labour starting method, 113 



synchronous motors, 51 

 Lag of current, variations of reactance 



with, 92 

 Leblanc, M. Maurice, 14 



on oscillations, 131 



starting method, 113 

 Length of air-gap, 164 

 Limit-circle of current, 37 

 Line of equal power occurring with 



constant excitation, 36 

 Lines of equal phase, 36, 47 



M 



Measurement of efficiency, 134 

 Mordey alternators, 38, 47, 53 



N 



Notation, 172 , 



for study of operation, 31 

 Numerical examples, 53, 69, 75, 84, 88 



O 



Observations on the E. M. F., induced 



at the poles, 108 

 Oerlikon type of motor, 133 

 Operation of a motor with constant 



excitation, 49 



with constant excitation, 100 

 Operations, factors determining the 



practical condition of, 1 76 

 Operative conditions, representation 



of, 20 

 Oscillations, damping of, 126 



of converters connected in parallel, 



220 



of synchronous motors, 122 

 long-period, 130 

 Outputs, comparison of, 62 

 Overrating of motor-generator sets 

 to improve power-factor, 288 



