Induction Motor Objective Type Questions
1. Presence of 5th harmonics in induction motor causes (a) cogging. (b) crawling. (c) small reverse braking torque. (d) hunting. 2. The cogging occurs in induction motors due to (a) harmonic induction torques. (b) harmonic synchronous torques. (c) vibration torques. (d) both (a) and (b). 3. Cogging of induction motors occurs at (a) high voltage […]