6.12 in section 5.5 it was stated that the brushes may be shifted from the q-axis unintentionally, for example due to incorrect positioning, or they may be shifted intentionally to improve commutation, as explained in section 6.5.3. in section 5.5 it was also stated that, when the brushes are shifted, armature reaction may be magnetizing or demagnetizing. Sketch suitable developed diagrams to verify that when the brushes are shifted to improve commutation, armature reaction is always demagnetizing.

6.12 in section 5.5 it was stated that the brushes may be shifted from the q-axis unintentionally, for example due to incorrect positioning, or they may be shifted intentionally to improve commutation, as explained in section 6.5.3. in section 5.5 it was also stated that, when the brushes are shifted, armature reaction may be magnetizing or demagnetizing. Sketch suitable developed diagrams to verify that when the brushes are shifted to improve commutation, armature reaction is always demagnetizing.

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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