4. The back e.m.f. in a d.c. motor ....... the applied voltage and when it is equal to applied voltage the mechanical power will be maximized. 5. The deciding factor in the selection of a d.c. motor for a particular application is its oborootor
4. The back e.m.f. in a d.c. motor ....... the applied voltage and when it is equal to applied voltage the mechanical power will be maximized. 5. The deciding factor in the selection of a d.c. motor for a particular application is its oborootor
Delmar's Standard Textbook Of Electricity
7th Edition
ISBN:9781337900348
Author:Stephen L. Herman
Publisher:Stephen L. Herman
Chapter5: Resistors
Section: Chapter Questions
Problem 1PA
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4.back emf opposes the applied voltage. and when the back emf is equal to half of the applied voltage . dc motor works
on maximum efficiency.
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