Cylindrical pole machines are less stable than salient rotor

cylindrical-pole-machines-are-less-stable-than-salient-rotor

Cylindrical pole machines are less stable than salient rotor machines.

A. True

B. False

I have been asked this question in homework.

The query is from Induction Motors in chapter Speed Control of Direct Current Motors & Induction Motors of Electric Drives

The correct choice is A. True

Explanation: Cylindrical pole machines are less stable than salient rotor machines because of the less short circuit ratio and less real power transfer capability. The air gap length in cylindrical pole machines is less as compare to salient rotor machines.