Red Seal Electrician Practice
MotorsQuestion 1284 of 1506

What is a disadvantage of a wound rotor motor compared with a squirrel cage motor?

  1. Lower starting torque for heavy loads and high inertia
  2. Higher starting current on the line
  3. More maintenance on the brushes and slip rings
  4. No means of speed control at all
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Correct answer: More maintenance on the brushes and slip rings

Brushes and slip rings wear and need service.

Source: Lessons in Electric Circuits II: AC (Kuphaldt), 13.8: Wound Rotor Induction Motors

Practice motors

Questions last reviewed: 18 October 2026