Physics · Electrical Machines
What is the significance of back e.m.f. (electromotive force) in a D.C. motor?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1It regulates the voltage drop across the armature
- 2It controls the magnetic flux leakage
- 3It automatically regulates the armature current to match the mechanical load✓
- 4It amplifies the input current
Correct answer
It automatically regulates the armature current to match the mechanical load
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