A variable shunt, connected across the series field coils of a DC compound wound generator, permits adjustment of the degree of compounding. What is this variable shunt called?

Correct Answer: Option C — diverter

A diverter is a low-resistance variable shunt connected in parallel across the series field coils of a compound DC generator, allowing fine-tuning of the degree of compounding by diverting a portion of the total armature current away from the series winding.