Question

PMDC produces high torque on ______________

(a) At low speeds

(b) Only at maximum speed

(c) Torque is constant

(d) Cannot say

This question was addressed to me in final exam.

I want to ask this question from PMDC Motors in division DC Machines of DC Machines

Answer 1

Right choice is (a) At low speeds

The best I can explain: PMDC produces high torque even at very low speeds. In DC shunt motor torque produced at very low speeds is lower than the torque produced at the same speeds in PMDC motor.