>Control Systems

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Control Systems

Exams

GATE EC

Subjects

Control Systems
Electrical Engineering

Topics

Root Locus
Block diagrams and Signal flow graphs
Bode Plot
Closed Loop Control Systems
Control Systems
Final Value of the Response
Lead and Lead‐Lag compensators
Nyquist Plot
P, PI and PID controllers
P, PI, PID, cascade
Root Locus Diagram
Routh and Nyquist criteria
Signal Flow Graph and Block Diagram
Solution of state equations of LTI systems
Stability analysis using Routh-Hurwitz and Nyquist criteria
State Space Representation
State space model
Steady State Error
Steady State Output
Transfer Function From State Space Representation
Transfer function
Transient and Steady‐state analysis of linear time invariant systems
Tuning of PID controllers and sizing of control valves

List of top Control Systems Questions on Root Locus

Consider an even polynomial $p(s)$ given by \[ p(s) = s^4 + 5s^2 + 4 + K, \] where $K$ is an unknown real parameter. The complete range of $K$ for which $p(s)$ has all its roots on the imaginary axis is ________________.

GATE EC - 2022
GATE EC
Control Systems
Root Locus

The root-locus plot of a closed-loop system with unity negative feedback and transfer function $KG(s)$ in the forward path is shown in the figure. Note that $K$ is varied from 0 to $\infty$. Select the transfer function $G(s)$ that results in the shown root-locus.

GATE EC - 2022
GATE EC
Control Systems
Root Locus