A 500 V, 250 kW, long shunt compound generator induces an e.m.f. of 480 V when running at 1000 r.p.m. no load. On full load the spped of the machine drops to 975 r.p.m. the flux increases by 15% and the terminal voltage rises to 500 V. If the series and shunt field resistances are 0.02 ohm and 100 ohms respectively, calculate the armature resistance. Assume a voltage drop of 1V per brush.[Ans.

A 500 V, 250 kW, long shunt compound generator induces an e.m.f. of 480 V when running at 1000 r.p.m. no load. On full load the spped of the machine drops to 975 r.p.m. the flux increases by 15% and the terminal voltage rises to 500 V. If the series and shunt field resistances are 0.02 ohm and 100 ohms respectively, calculate the armature resistance. Assume a voltage drop of 1V per brush.[Ans.

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

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.3P

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