1
GATE EE 2024
Numerical
+2
-0

Consider the stable closed-loop system shown in the figure. The asymptotic Bode magnitude plot of $G(s)$ has a constant slope of $-20$ dB/decade at least till $100$ rad/sec with the gain crossover frequency being $10$ rad/sec. The asymptotic Bode phase plot remains constant at $-90^{o}$ at least till $\omega = 10$ rad/sec. The steady-state error of the closed-loop system for a unit ramp input is ________________ (rounded off to 2 decimal places).

GATE EE 2024 Control Systems - Polar Nyquist and Bode Plot Question 3 English
Your input ____
2
GATE EE 2024
Numerical
+2
-0

Consider the stable closed-loop system shown in the figure. The magnitude and phase values of the frequency response of $G(s)$ are given in the table. The value of the gain $K_I$ ($>0$) for a $50^\circ$ phase margin is _____ (rounded off to 2 decimal places).

$\omega$ in rad/secMagnitude in dBPhase in degrees
0.5−7−40
1.0−10−80
2.0−18−130
10.0−40−200
GATE EE 2024 Control Systems - Polar Nyquist and Bode Plot Question 2 English
Your input ____
3
GATE EE 2023
MCQ (Single Correct Answer)
+2
-0.67

The magnitude and phase plots of an LTI system are shown in the figure. The transfer function of the system is

GATE EE 2023 Control Systems - Polar Nyquist and Bode Plot Question 5 English

A
$$2.51{e^{ - 0.032s}}$$
B
$${{{e^{ - 2.514s}}} \over {s + 1}}$$
C
$$1.04{e^{ - 2.514s}}$$
D
$$2.51{e^{ - 1.047s}}$$
4
GATE EE 2023
MCQ (Single Correct Answer)
+2
-0.67

Consider a lead compensator of the form

$$K(s) = {{1 + {s \over a}} \over {1 + {s \over {\beta a}}}},\beta > 1,a > 0$$

The frequency at which this compensator produces maximum phase lead is 4 rad/s. At this frequency, the gain amplification provided by the controller, assuming asymptotic Bode-magnitude plot of $$K(s)$$, is 6 dB. The values of $$a,\beta$$, respectively, are

A
1, 16
B
2, 4
C
3, 5
D
2.66, 2.25
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