The operation of a PLC retentive timer is similar to that of an:
A)electromagnetic pneumatic timer.
B)electromechanical motor-driven timer.
C)off-delay timer.
D)on-delay timer.

Question

Quizplus · Accepted Answer

Electromechanical motor-driven timers, like PLC retentive timers, maintain their state (time value) even when the controlling signal is removed, allowing them to "retain" the timing operation progress similar to how a PLC retentive timer would.

The Operation of a PLC Retentive Timer Is Similar to That