## Electric Power Utilization |

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acceleration alternating alternating current angle anode applied armature current balanced biphase braking torque calculated capacitor circuit resistance coil commutation component condition connected connexion constant contactor corresponding d.c. motor determined direct current driving dynamic braking effect electrical equations equivalent circuit excitation field current field winding flux frequency changer half-wave harmonics Hence Imin impedance increase induction motor inductor input lbf ft leakage inductance leakage reactance machine magnetic circuit magnetization curve magnetizing current Magnetizing reactance magnitude negative negative-sequence newton-metres normal number of turns obtained ohms per phase operation output voltage overlap phase voltage plotted positive-sequence primary winding ratio rectifying elements reduced regenerative braking resistor rev/min reverse rotor circuit rotor winding Rr/s saturation secondary windings shown in Fig single-phase slip slip-ring speed/torque curve squirrel-cage starter starting stator symmetrical components synchronous speed terminal voltage three-phase transformer Ward Leonard waveshape whilst X,Xr zero zero-sequence