1
GATE ECE 2014 Set 1
Numerical
+2
-0
The phase margin in degrees of G(s)=$${{10} \over {\left( {s + 0.1} \right)\left( {s + 1} \right)\left( {s + 10} \right)}},$$ using the asymptotic Bode plot is ______
Your input ____
2
GATE ECE 2011
MCQ (Single Correct Answer)
+2
-0.6
The input-output transfer function of a plant is h(s)=$${{100} \over {s{{\left( {s + 10} \right)}^2}}}$$. The plant is placed in a unity negative feedback configuration as shown in the figure below. GATE ECE 2011 Control Systems - Frequency Response Analysis Question 25 English The gain margin of the system under closed loop unity negative feedback is
A
0 dB
B
20 dB
C
26 dB
D
46 dB
3
GATE ECE 2011
MCQ (Single Correct Answer)
+2
-0.6
The input-output transfer function of a plant is h(s)=$${{100} \over {s{{\left( {s + 10} \right)}^2}}}$$. The plant is placed in a unity negative feedback configuration as shown in the figure below. GATE ECE 2011 Control Systems - Frequency Response Analysis Question 26 English The signal flow graph that DOES NOT model the plant transfer function H(s) is
A
GATE ECE 2011 Control Systems - Frequency Response Analysis Question 26 English Option 1
B
GATE ECE 2011 Control Systems - Frequency Response Analysis Question 26 English Option 2
C
GATE ECE 2011 Control Systems - Frequency Response Analysis Question 26 English Option 3
D
GATE ECE 2011 Control Systems - Frequency Response Analysis Question 26 English Option 4
4
GATE ECE 2009
MCQ (Single Correct Answer)
+2
-0.6
The Nyquist plot of a stable transfer function G(s) is shown in the figure. We are interested in the stability of the closed loop system in the feedback configuration shown. GATE ECE 2009 Control Systems - Frequency Response Analysis Question 27 English 1 GATE ECE 2009 Control Systems - Frequency Response Analysis Question 27 English 2 The gain and phase margins of G(s) for closed loop stability are
A
6 dB and $$180^\circ $$
B
3 dB and $$180^\circ $$
C
6 dB and $$90^\circ $$
D
3 dB and $$90^\circ $$
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