1
GATE ECE 2003
+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 A (-0.5,0) B (-2.548,0) C (-4,0) D (-0.784,0) 2 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 $$G\left(s\right)H\left(s\right)=\frac K{\left(s+1\right)^4}$$$
A
s1 is on the root locus, but not s2
B
s2 is on the root locus, but not s1
C
both s1 and s2 are on the root locus
D
neither s1 nor s2 is on the root locus
3
GATE ECE 1992
+2
-0.6
Given a unity feedback system with open loop transfer function, $$G\left(s\right)=\frac K{s\left(s+1\right)\left(s+2\right)}$$\$ The root locus plot of the system is of the form.
A B C D 4
GATE ECE 1991
+2
-0.6
The characteristic equation of a feedback control system is given by
s3 +5s2 +(K + 6)s + K =0
Where K > 0 is a scalar variable parameter. In the root loci diagram of the system the asymptotes of the root locus for large values of K meet at a point in the s-plane whose coordinates are
A
(-3,0)
B
(-2,0)
C
(-1,0)
D
(2,0)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics
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