__ is used to convert AC to unidirectional current in DC machine.(estimated time 1 minute) a. bearings b. brushes c. pole shoe d. commutator

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
Chapter3: Power Transformers
Section: Chapter Questions
Problem 3.24P: For Problem 3.18, the motor operates at full load, at 0.8 power factor leading, and at a terminal...
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___ is used to convert AC to unidirectional current in DC machine.(estimated time 1 minute)

a.
bearings

b.
brushes

c.
pole shoe

d.
commutator

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