When the armature of a D.C. motor rotates, e.m.f. induced is___________?
Correct answer: C. back e.m.f
- A. self-induced e.m.f.
- B. mutually induced e.m.f.
- C. back e.m.f
- D. none of the above
Explanation
As a motor armature rotates, it cuts the magnetic flux and generates an e.m.f. opposing the applied voltage, so it is called back e.m.f. It is not self-induced or mutually induced e.m.f.
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