Marine Electrical Systems USCG Question #274 (Set 10)

As load is added to a DC shunt motor, how will the motor respond?

Official USCG Answer & Rule Citation

Correct Answer: Option D — slow down slightly

DC shunt motors feature constant flux from a parallel field. When mechanical load increases, armature current rises, causing a slight internal voltage drop across armature resistance, resulting in a minimal decrease in operational speed per standard DC machine theory.

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