Which of the following describes an event de-energizing circuit?

• A. A circuit that remains energized throughout the sequence
• B. A circuit that turns on the next step automatically
• C. A circuit that is shut down after a step completes
• D. A circuit that cycles only while a timer is active

Answer: (C)

De-energizing means removing power from the circuit after the required action has occurred. In an event-driven setup, the goal is to perform a step and then cut the power so the circuit returns to a safe, non-energized state and is ready for the next trigger.

The choice that describes the circuit being shut down after a step completes fits this idea perfectly. After the step finishes, power is removed, halting further activity until the next event re-energizes the circuit. This prevents unintended repeats and helps reset the system for the next cycle.

The other options describe different behaviors: staying energized throughout the sequence keeps power on, which isn’t de-energizing; automatically turning on the next step advances the process but doesn’t specify cutting power afterward; and cycling while a timer is active implies a timed loop, not necessarily de-energizing after a single event.