A250 V, dc. shunt motor has an amature resistance of 0.5 chmand a field resistance d 250 dhm When driving a load of canstant tarque at 600 r.pm, the ammature current is 20 A If it is desired to raise the speed fram600 to 800 r.p.m, what resistance should be inserted in the shunt field circut? Assume that the magnetic circut is unsaturated

A250 V, dc. shunt motor has an amature resistance of 0.5 chmand a field resistance d 250 dhm When driving a load of canstant tarque at 600 r.pm, the ammature current is 20 A If it is desired to raise the speed fram600 to 800 r.p.m, what resistance should be inserted in the shunt field circut? Assume that the magnetic circut is unsaturated

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 12.4P

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