I need the answer quickly 0-3:- An Elevator has 30 induction motor- a star-connected rotor has an induced e.m.f. of 80volts between slip-rings at standstill on open-circuit. The rotor has a resistance and reactanceper phase of 1 2 and 4 2 respectively. Calculate current/plhase and power factor when (a) slip-rings are short-circuited (b) slip-rings are connected to a star-connected rheostat of 3 2 perphase.

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0-3- An Elevator has 30 induction motor- a star-connected rotor has an induced e.m.f. of 80 volts between slip-rings at standstill on open-circuit. The rotor has a resistance and reactance per phase of 1 f and 4 2 respectively. Calculate current/phase and power factor when (a) slip- rings are short-circuited (b) slip-rings are connected to a star-connected rheostat of 3 2 per nhase

0-3- An Elevator has 30 induction motor- a star-connected rotor has an induced e.m.f. of 80 volts between slip-rings at standstill on open-circuit. The rotor has a resistance and reactance per phase of 1 f and 4 2 respectively. Calculate current/phase and power factor when (a) slip- rings are short-circuited (b) slip-rings are connected to a star-connected rheostat of 3 2 per nhase

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter39: Synchronous Motor Operation

Section: Chapter Questions

Problem 14SQ: Induction motors and welding transformers require magnetizing current, which causes a. lagging power...

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