1
GATE ECE 2001
MCQ (Single Correct Answer)
+2
-0.6
The open-loop DC gain of a unity negative feedback system with closed-loop transfer function $${{s + 4} \over {{s^2} + 7s + 13}}$$ is
A
$${4 \over {13}}$$
B
$${4 \over 9}$$
C
$$4$$
D
$$13$$
2
GATE ECE 1992
Subjective
+2
-0
Bode plot of a stable system is shown in fig. The transfer function of the system is GATE ECE 1992 Control Systems - Frequency Response Analysis Question 39 English
3
GATE ECE 1991
MCQ (Single Correct Answer)
+2
-0.6
The open-loop transfer function of a feedback control system is G(s)=$${1 \over {{{\left( {s + 1} \right)}^3}}}$$
The gain margin of the system is
A
2
B
4
C
8
D
16
4
GATE ECE 1989
MCQ (Single Correct Answer)
+2
-0.6
From the Nicholas chart, one can determine the following quantities pertaining to a closed loop system:
A
Magnitude and phase
B
band width
C
only magnitude
D
only phase
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