Q29. 100. A 240 V, dc shunt motor draws 15 A whilesupplying the rated load at a speed of 80 rad/s. Thearmature resistance is 0.5 Q and the field windingresistance is 80 Q. The external resistance to be added inthe armature circuit to limit the armature current to125% of its rated value is31.9 Q31.1 Q15.9 Q

It is given that: V=240VIL=15ARsh=80ΩRa=0.5Ω

Q29. 100. A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 N and the field winding resistance is 80 N. The external resistance to be added in the armature circuit to limit the armature current to 125% of its rated value is 31.9 0 31.1 Q 15.9 Q

Q29. 100. A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 N and the field winding resistance is 80 N. The external resistance to be added in the armature circuit to limit the armature current to 125% of its rated value is 31.9 0 31.1 Q 15.9 Q

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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