Motor controlsQuestion 332 of 1506

Two pushbuttons A and B are wired so that lamp Y lights only when both are pressed. Which logic function is this?

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

Correct answer: AND

AND needs both inputs true. Series contacts act this way.

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

Practice motor controls

Questions last reviewed: 18 October 2026