Physics · Electrical Machines
Which of the following statements is correct regarding a DC machine compared to an AC machine?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Brushes and commutators are completely absent in a DC motor.
- 2Motor speed control is done solely by changing the supply frequency.
- 3DC motors generally offer high efficiency and excellent speed control.✓
- 4It does not require any maintenance.
Correct answer
DC motors generally offer high efficiency and excellent speed control.
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