Assuming that a cumulatively compounded DC motor is fitted with interpoles and compensating windings, normally how is the direction of rotation in such a DC motor reversed?

Correct Answer: Option B — By reversing the armature-interpole-compensating winding leads as a unit.

In a heavily compensated and interpole-fitted DC motor, armature reaction is fully neutralized. Reversing the entire armature, interpole, and compensating winding assembly as a single unit preserves the precise magnetic alignment between the main poles, interpoles, and compensating windings, ensuring spark-free commutation during directional reversal per IEEE 45 standards.