1
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
2
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
3
GATE ECE 1987
MCQ (Single Correct Answer)
+2
-0.6
A system has fourteen poles and two zeroes. Its high frequency asymptote, in its magnitude plot, has having a slope of
A
$$- 40$$ dB / decade
B
$$- 240$$ dB / decade
C
$$- 280$$ dB / decade
D
$$- 320$$ dB / decade.
4
GATE ECE 1987
MCQ (Single Correct Answer)
+2
-0.6
The popular plot of G(s)=$${{10} \over {s{{\left( {s + 1} \right)}^2}}},$$ intercepts real axix at $$\omega = {\omega _0}$$ Then, the real part and $${\omega _0}$$ are respectively given by
A
-25, 1
B
-5, 0.5
C
-5, 1
D
-5, 2
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