Assertion (A): DC servomotors have practically taken over from AC servomotors in most control application. Reason (R): Low brush commutator friction and still higher torque/inertia have been achieved in DC servomotors.

Correct Answer: Both A and R are true and R is correct explanation of A
AC servomotors are replaced by DC servomotors as frictional losses and higher torque/inertia ratios have been achieved.