Motor controlsQuestion 334 of 1506

Y is on as long as neither button A nor button B is pressed. Which function is this?

  1. NAND
  2. NOR
  3. OR
  4. AND
Show answer

Correct answer: NOR

NOR is the inverse of OR. Pressing either button turns Y off.

Source: Troubleshooting Motors and Controls (Dickson-Self), 2.3: Introduction to Logic

Practice motor controls

Questions last reviewed: 18 October 2026