A 3Ø, 2000KW, 480V A-connected alternator is short-circuited and is operated at rate speed to produce rated current at 4A excitation. With the short-circuit remove and with the excitation adjusted to 5A, the voltage between stator terminal is 330V. The effective resistance between terminal as measured with dc is 20. Determine the %V.R of the alternator at half-load and pf of 0.8 leading without changing any given values.

A 3Ø, 2000KW, 480V A-connected alternator is short-circuited and is operated at rate speed to produce rated current at 4A excitation. With the short-circuit remove and with the excitation adjusted to 5A, the voltage between stator terminal is 330V. The effective resistance between terminal as measured with dc is 20. Determine the %V.R of the alternator at half-load and pf of 0.8 leading without changing any given values.

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.41P

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