INDEX 



The numbers refer to the pages 



ACCELERATION, 146 



equation for, 156 



curve, graphic construction of, 

 162 



Acceleration curves : 



Baltimore and Ohio Eailroad, 



213 



Buffalo and Niagara Falls Elec- 

 tric Bailway, 202, 204 

 Chicago Metropolitan Elevated 



Railroad, 254 

 City and South London Bailway, 



167 



Liverpool Overhead Bailway, 197 

 Accumulators, reversal of generator 



charging, 38 

 Armature, parallel connected, 6 



series connected, 6 

 Armature reaction : 



reduction of M due to, 267, 276 

 equations for, 263, 264 

 influence of, on the speed, 66 

 in arc -light generator, 18 



BALTIMORE and Ohio Bailroad : 



data of motors on, 210 



torque curves of motors on, 128 



acceleration curve, 213 



mechanical efficiency of motors 

 on, 127 



power and force of, 174 

 Belt, slipping of, 159 

 lift driven by, 158 

 Brake test, 101 



Brakes, application of : 



Chicago Metropolitan Elevated 



Bailroad, 249, 252 

 Liverpool Overhead Bailway, 197 

 City and South London Bailway, 



167 



Brakes, electric, 104 

 Bridge, swing, equations for M, 



57, 154 

 Brushes : 



use of carbon, 280, 286 

 motors with fixed, 279 

 equation for magnetisation 



under, 264 

 effect of unsymmetrical position 



of, 275 

 width of, in railway motor, 271 



CARBON brushes, 280, 286 



' Characteristic ' curve, 17 



Chicago Metropolitan Elevated 

 Eailroad, 248 



Clearance between motor and the 

 ground, 59, 238 



Clutch, use of, in starting, 157 



Commutation, condition of spark- 

 less, 279 



Commutator, 7, 283 



Compound winding, 65 



Conductors, surface : 

 force on, 1 



to count the number of, 7 

 to determine the number of, in 

 designing, 278 



