1
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
A unity feedback control system has an open-loop transfer function
$$$G\left(s\right)=\frac K{s\left(s^2+7s+12\right)}$$$
The gain K for which s = −1 + j1 will lie on the root locus
of this system is:
2
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6
A unity feedback system is given as,$$$G\left(s\right)=\frac{K\left(1-s\right)}{s\left(s+3\right)}$$$ indicate the correct root locus diagram.
3
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
The root locus of the system $$$G\left(s\right)H\left(s\right)=\frac K{s\left(s+2\right)\left(s+3\right)}$$$ has the break-away point
located at
4
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
Consider the points s1 = −3 + j4 and s2 = −3 − j2 in the s-plane. Then, for a system with the open loop transfer function
$$$G\left(s\right)H\left(s\right)=\frac K{\left(s+1\right)^4}$$$
Questions Asked from Root Locus Diagram (Marks 2)
Number in Brackets after Paper Indicates No. of Questions
GATE ECE Subjects
Network Theory
Control Systems
Electronic Devices and VLSI
Analog Circuits
Digital Circuits
Microprocessors
Signals and Systems
Representation of Continuous Time Signal Fourier Series
Discrete Time Signal Fourier Series Fourier Transform
Discrete Time Signal Z Transform
Continuous Time Linear Invariant System
Transmission of Signal Through Continuous Time LTI Systems
Discrete Time Linear Time Invariant Systems
Sampling
Continuous Time Signal Laplace Transform
Discrete Fourier Transform and Fast Fourier Transform
Transmission of Signal Through Discrete Time Lti Systems
Miscellaneous
Fourier Transform
Communications
Electromagnetics
General Aptitude