1
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
For the polynomial
P(s) = s5 + s4 + 2s3 + 2s2 + 3s + 15 ,
the number of roots which lie in the right half of the s-plane is
A
4
B
2
C
3
D
1
2
GATE ECE 2003
MCQ (Single Correct Answer)
+2
-0.6
The open-loop transfer function of a unity feedback system is $$$G\left(s\right)=\frac k{s\left(s^2+s+2\right)\left(s+3\right)}$$$ the range of 'k' for which the system is stable
A
$$\frac{21}4>k>0$$
B
13 > k > 0
C
$$\frac{21}4<\;k\;<\;\infty$$
D
$$-6\;<\;k\;<\;\infty$$
3
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
The system shown in Figure remains stable when GATE ECE 2002 Control Systems - Stability Question 28 English
A
k<-1
B
-1 < k < 1
C
1 < k < 3
D
k > 3
4
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
The characteristic polynomial of a system is
q(s) = 2s5 + s4 + 4s3 + 2s2 + 2s + 1. The system is
A
stable
B
marginally stable
C
unstable
D
oscillatory
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