What would happen if both pushbuttons PB1 and PB2 are pressed simultaneously in the PLC circuit?

In a PLC (Programmable Logic Controller) circuit, the behavior of outputs in relation to input pushbuttons is often determined by the specific logic programmed into the PLC. When both pushbuttons, PB1 and PB2, are pressed simultaneously, the correct answer indicates that K1 would be energized.

This situation typically arises in a circuit where the conditions for energizing K1 are met when both inputs are active. If the logic is such that both pushbuttons are required to activate K1, pressing both at the same time satisfies that condition. In many applications, the pressing of both buttons might represent a safety mechanism or a confirmation step to ensure that a more significant action, like energizing a relay or actuator, only occurs when intentionality is confirmed by both actions.

The concept often relies heavily on the configuration of the circuits in consideration of AND logic, where the output is activated only if all conditions (in this case, both pushbutton presses) are satisfied. Therefore, the simultaneous pressing of PB1 and PB2 would lead K1 to be energized, assuming the PLC program is designed to energize K1 when both inputs are active.

The other possible actions outlined in the choices do not take into account the logic programming normally expected in such scenarios