Mark the most incorrect. In dc generator, commutation can be improved by __________(a) using interpoles(b) using carbon brushes(c) shifting brush axis in direction of armature rotation(d) none of the mentionedI had been asked this question during an internship interview.My doubt stems from Effect of Brush Shift and Compensation Windings in chapter DC Machines of Electrical Machines

Mark the most incorrect. In dc generator, commutation can be improved

1.	Mark the most incorrect. In dc generator, commutation can be improved by __________(a) using interpoles(b) using carbon brushes(c) shifting brush axis in direction of armature rotation(d) none of the mentionedI had been asked this question during an internship interview.My doubt stems from Effect of Brush Shift and Compensation Windings in chapter DC Machines of Electrical Machines
Answer» Right option is (a) using interpoles The explanation is: All the given measures are USED to eliminate the EFFECT of armature REACTION and hence improves COMMUTATION ALSO.

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