3. A 6-pole, 3-phase, 50 Hz induction motor has a rotor resistarice of 0-02 Q/phase and standstill leakage reactance is 0.10/phase. Determine the speed to give maximum torque. What external resistance per phase is necessary in the rotor circuit to give half maximum torque at starting ? [800 r.p.m. ; 0-07 2) 0 18 TORO E SI R CHA DACTICDIOTIa0

3. A 6-pole, 3-phase, 50 Hz induction motor has a rotor resistarice of 0-02 Q/phase and standstill leakage reactance is 0.10/phase. Determine the speed to give maximum torque. What external resistance per phase is necessary in the rotor circuit to give half maximum torque at starting ? [800 r.p.m. ; 0-07 2) 0 18 TORO E SI R CHA DACTICDIOTIa0

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter8: Basic Electric Motors

Section: Chapter Questions

Problem 28RQ: What are the advantages and disadvantages of using the following types of motors? shaded-pole...

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