Physics · Electrical Machines
Which of the following statements is generally correct regarding a DC motor compared to an AC induction motor of equivalent rating?
- 1In this motor, brushes and commutators are not present.
- 2Motor speed control can be done simply by changing the supply frequency.
- 3The DC motor has high starting torque and excellent speed control efficiency.✓
- 4It does not require any maintenance.
Correct answer
The DC motor has high starting torque and excellent speed control efficiency.
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