A 10kW 220 volt compound generator is operated at no load at the proper armature voltage and speed, from which the stray power loss calculations are determined to be 705 watts. The shunt field resistance is 110 ohms, the armature resistance is 0.265 ohm, and the series field resistance is 0.035 ohm. Assume a 2 volt brush drop and (a) calculate the full load efficiency. (b) Calculate also the maximum efficiency.

A 10kW 220 volt compound generator is operated at no load at the proper armature voltage and speed, from which the stray power loss calculations are determined to be 705 watts. The shunt field resistance is 110 ohms, the armature resistance is 0.265 ohm, and the series field resistance is 0.035 ohm. Assume a 2 volt brush drop and (a) calculate the full load efficiency. (b) Calculate also the maximum efficiency.

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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