What is the pid ?what is the step down transformer?

Question

Accepted Answer

PID stands for Proportional Integral Derivative. A step-down transformer is a type of transformer that reduces voltage.

PID is a control loop feedback mechanism used in industrial control systems.
It continuously calculates an error value as the difference between a desired setpoint and a measured process variable.
The step-down transformer is used to reduce the voltage of an AC power supply.
It has fewer turns on the secondary coil than the primary coil, resulting in a lower output voltage.
Step-down transformers are commonly used in power distribution systems to reduce high voltage to a lower voltage for use in homes and businesses.

Popular interview questions of Senior Electrician