An on-delay timer relay's contacts will not change states until ______.

• A. a predetermined time has elapsed
• B. a change in input
• C. the coil is energized
• D. a manual reset

Answer: (A)

An on-delay timer delays the change of contacts until a set period has passed after the input is energized. When the coil is energized, the timer starts counting, but the contacts remain in their current state during that interval. Only after the predetermined time has elapsed do the contacts change state. This is why the correct statement is that a predetermined time must pass. The coil energizing begins the countdown, not the instant change, and a manual reset isn’t required for the basic on-delay action.