# How to Study Control Systems for GATE Exam? | Preparation Strategy

Also, there are numerous interesting real-life applications of Control Systems which make this topic all the more wonderful. Around us we see many systems operating in our everyday life and we can treat every system as a control system though it may be manual or automatic. Even our human body itself can be treated as a control system with the brain acting as a controller or processor and co-coordinating the actions of different body parts based on response delivered to the brain by different senses.

## What are the best standard books for Control Systems, GATE (EE, ECE)?

The standard book that you can follow for this subject is Automatic Control Systems by B.C. Kuo. It has been well written with numerous practical application of concepts given.

Now I will treat this subject topic by topic and will try to highlight the relevant and irrelevant portions in each topic so that you can concentrate more on relevant topics instead of getting lost in the vastness of standard books. The following topics are included in the GATE curriculum:

## Important Topics in Control Systems | GATE (EE, ECE)

## • **Transfer Functions**

## • **Mathematical Modeling of Control Systems**

## •** Time Domain Analysis**

## • Stability

## • Root-Locus Technique

In this topic, we need to learn about drawing root-locus and general properties associated with it like the number of asymptotes, the angle of asymptotes, centroid, break-away, and break-in points. The one most important point to remember is the change in root-locus properties when positive feedback is applied instead of negative feedback there we have to understand about the Complimentary Root Locus. From past 3-4 years every year a question from this topic is being asked.

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