What are the functions of a sensor? Explain the function of on delay timers. Explain the working principle of a limit switch. Differentiate the behavior of on delay timer and off delay timer. Refer to the timing diagram.

Write a PLC program that will operate a light (Q0.0) according to the following sequence: A momentary contact normally open PB (I0.0) is pressed to start the sequence. The light is switched on and remains on for 5 seconds. The light is then switched off and remains off for 5 seconds. A counter is incremented by 1 after this sequence. The sequence then repeats for a total of five counts. After the fifth count, the sequence will stop and the counter will be reset to zero. Any help would do. No explanations required

I need the answer as soon as possible

In a closed-loop velocity servo system, if the load increases, the motor speed ["decreases", "increases"], the tachometer output ["decreases", "increases"] and the error signal ["decreases", "increases"] Explanation needed