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- Subject
- Polyphase Induction Motorselectrical-engineering-mcqs › polyphase-induction-motors
- Published
- 12 Sept 2018
- Last updated
- 28 May 2026
Explanation
Option A is correct because short-circuit gear is used to short the rotor winding through the slip rings, allowing proper operation during starting or specific running conditions. Options B and C describe other unrelated functions, and option D is incorrect.
More Polyphase Induction Motors MCQs
Practice related questions from the same subject.
- 1.What is the effect of adding resistance to the stator winding of an induction motor?
- 2.How can the starting torque of a three-phase induction motor be enhanced?
- 3.At what speed does the rotor of an induction motor operate?
- 4.In a star-delta starter used for an induction motor, what is the voltage applied to each stator phase relative to the line voltage?
- 5.In which situation is a slip ring motor favored over a squirrel cage induction motor?
- 6.Which types of motors can utilize a reduced voltage starter?
- 7.In which situation is a squirrel cage induction motor generally not chosen?
- 8.Which type of induction motor generally requires the least maintenance?
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