Problem 3 A 250 V d.c. shunt motor runs at 1000 rpm. and takes an armature current of 25 amp. Its amature resistance is 0.40 ohm. Calculate the speed with increased load with the armature current of 50 amp. Assume that the increased load results into flux-weakening by 3%, with respect to the fux in previous loading condition

Problem 3 A 250 V d.c. shunt motor runs at 1000 rpm. and takes an armature current of 25 amp. Its amature resistance is 0.40 ohm. Calculate the speed with increased load with the armature current of 50 amp. Assume that the increased load results into flux-weakening by 3%, with respect to the fux in previous loading condition

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.6P

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