A 12KW, 240V 1500RPM shunt generator has an armature resistance of .02 ohm and a shunt field resistance of 160 ohms. The stray power losses are 900W. Assuming a constant shunt field current, what (1) the efficiency at rated load and (2) the efficiency of the generator at half-rated load?

A 12KW, 240V 1500RPM shunt generator has an armature resistance of .02 ohm and a shunt field resistance of 160 ohms. The stray power losses are 900W. Assuming a constant shunt field current, what (1) the efficiency at rated load and (2) the efficiency of the generator at half-rated load?

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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