MotorsQuestion 1281 of 1506

Which is a feature of a polyphase induction motor, unlike a single-phase motor?

It is self-starting.
It needs a centrifugal switch.
It needs a start capacitor.
It needs slip rings.

Show answer

Correct answer: It is self-starting.

The rotating field from several phases starts the rotor with no extra parts.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 13.7: Tesla Polyphase Induction Motors

Questions last reviewed: 18 October 2026

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