Motor controlsQuestion 93 of 1506

A series of conveyor belts feeds material from one to the next. In what order should they be started?

  1. All together, at the same time, so the material starts to move quickly
  2. From the first belt to the last belt, as the material flows
  3. In random order, since the belts are independent of each other
  4. In reverse sequence: the last belt first, the first belt last
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Correct answer: In reverse sequence: the last belt first, the first belt last

Material then never lands on a stopped or slow belt. Timers give each belt time to reach speed.

Source: Lessons in Electric Circuits IV: Digital (Kuphaldt), 5.3: Time-delay Relays

Practice motor controls

Questions last reviewed: 18 October 2026