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Top 70+ PLC Interview Questions and Answers (2026) for Freshers & Experienced Engineers

PLC interview questions are essential for automation engineers preparing for jobs in industries such...

How power distribution is done and how is electricity generated transmitted and distributed

What is the generation and transmission of electricity The generation of electrical power is...

What is sensor trim in a smart transmitter?

In a conventional analog electronic process transmitter typically have only two calibration adjustments: one...

Pneumatic vs Electrical actuators

The main difference between pneumatic and mechanical actuators is their working speed. The two...

PLC learning series 16: PLC Documentation

Documentation is the process of orderly collection and record of data about machines or...

How to select an actuator for valve?

The actuator is an essential part of the control valve, which drives the control...

what is an isolation transformer and what are its advantages

What is a Transformer Transformers are used in a power system that is capable to...

What is Megger Test? How to do Megger Test/Insulation Resistance for Transformer?

Table of ContentsWhat is Megger Test?Working Principle of Megger TestingWhat is the acceptable Megger...

Why transformer testing is needed and how to do the maintenance of a transformer

What is the transformer A transformer is a device that can transfer electrical energy...

What is a piezoelectric transducer and how does it work

What is a transducer A transducer is a device that can convert one form...

What are the different types of NDT tests?

NDT test is a method to find the possibility of defects and the characteristics of...

PLC Learning series 15: Applications – Level measurement

Consider a simple application of water tank level measurement application using sensors. We put one...