STUDENT HELPLINE : 08888484828

How to prepare Control Systems for GATE-2017?
May 20, 2018

How to prepare Control Systems for GATE ?

Control Systems is one of the most important subjects for both Electrical and Electronics & Communication Engineering students for GATE. In-depth study of the subject is very necessary for cracking any competitive exam. In GATE (E&TC/Electrical), the average marks from Control Systems is 10 Marks and the no of Questions will be 3-4 One mark Questions & 4-5 Two Marks Questions. GATE is more about the application of concepts. So one should solve as many questions as possible which further helps in clarity of subject and increases question solving speed.

The following topics are very important from the point of view of GATE –

1) BLOCK DIAGRAMS

  • Open Loop System
  • Closed Loop System
  • Laplace Transform
  • Transfer Function
  • Sensitivity

2) TIME DOMAIN ANALYSIS

  • Introduction
  • Time Response of 2nd Order System
  • Time Response Specifications
  • Steady State Error

3) TIME DOMAIN STABILITY

  • Routh’s Stability Criterion
  • Root Locus

4) FREQUENCY DOMAIN ANALYSIS

  • Frequency Response
  • Bode Plots

5) POLAR & NYQUIST PLOTS

  • Polar plots
  • Nyquist Plots
  • Nichols Chart  (NOT THERE IN THE GATE& IES SYLLABUS)

6) STATE VARIABLE ANALYSIS

  • State Model from Transfer Function
  • Transfer function from State Model
  • Solution of State Equation
  • Controllability
  • Observability
  • Stability of a System

7) CONTROLLERS

  • PD Controller
  • PI Controller
  • PID Controller

8) COMPENSATORS

  • Lead Compensator
  • Lag Compensator
  • Lead-Lag Compensator

After the completion of practicing these topics, it is better to practice previous question papers of GATE to understand the depth of questions. It is mandatory to write the All India Test Series for better practice.

 

By

Expert GATE Faculty