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:
A
4
B
5.5
C
6.5
D
10
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.
A
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 1
B
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 2
C
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 3
D
GATE ECE 2005 Control Systems - Root Locus Diagram Question 3 English Option 4
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
A
(-0.5,0)
B
(-2.548,0)
C
(-4,0)
D
(-0.784,0)
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 $$$G\left(s\right)H\left(s\right)=\frac K{\left(s+1\right)^4}$$$
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
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