Marine Electrical Systems USCG Question #762 (Set 26)

What type of DC motor has extremely high starting torque, but has poor inherent speed regulation?

Official USCG Answer & Rule Citation

Correct Answer: Option D — series wound

Series motors provide maximum torque at zero speed due to full current flow through both armature and field. However, their speed varies wildly between no-load and full-load conditions, resulting in poor inherent speed regulation as recognized in standard marine engineering practices.

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