Red Seal Electrician Practice
MotorsQuestion 1260 of 1506

A conveyor is hard to start and must run at constant speed. Which NEMA design suits it?

  1. Class B
  2. Class C
  3. Class D
  4. Class F
Show answer

Correct answer: Class C

Class C has a higher starting torque, about 200% of full load torque.

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

Practice motors

Questions last reviewed: 18 October 2026