Physics · Electrical Machines
Back EMF is a significant quantity during the operation of a DC motor. Which of the following statements regarding the concept of Back EMF is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The back EMF decreases slightly as the load on the motor increases due to a drop in speed.✓
- 2Back EMF is not necessary for electromechanical energy conversion in a motor.
- 3At no load, the back EMF is zero.
- 4Back EMF increases considerably while loading the motor.
Correct answer
The back EMF decreases slightly as the load on the motor increases due to a drop in speed.
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