1
GATE EE 2011
MCQ (Single Correct Answer)
+1
-0.3
An open loop system represented by the transfer function $$G\left( s \right) = {{\left( {s - 1} \right)} \over {\left( {s + 2} \right)\left( {s + 3} \right)}}$$ is
A
Stable and of the minimum phase type
B
Stable and of the non - minimum phase type
C
Unstable and of the minimum phase type
D
Unstable and of non-minimum phase type
2
GATE EE 2011
MCQ (Single Correct Answer)
+1
-0.3
The frequency response of a linear system $$G\left( {j\omega } \right)$$ is provided in the tubular form below. GATE EE 2011 Control Systems - Polar Nyquist and Bode Plot Question 44 English

The gain margin and phase margin of the system are

A
$$6$$ $$db$$ and $${30^ \circ }$$
B
$$6$$ $$db$$ and $$-{30^ \circ }$$
C
$$-6$$ $$db$$ and $${30^ \circ }$$
D
$$-6$$ $$db$$ and $$-{30^ \circ }$$
3
GATE EE 2009
MCQ (Single Correct Answer)
+1
-0.3
The polar plot of an open loop stable system is shown below. The closed loop systems is GATE EE 2009 Control Systems - Polar Nyquist and Bode Plot Question 14 English
A
always stable
B
marginally stable
C
unstable with one pole on the $$RH$$ $$s-$$plane
D
unstable with two poles on the $$RH$$ $$s-$$ plane
4
GATE EE 2005
MCQ (Single Correct Answer)
+1
-0.3
A system with zero initial conditions has the closed loop transfer function $$T\left( s \right) = {{{s^2} + 4} \over {\left( {s + 1} \right)\left( {s + 4} \right)}}.$$ The system output is zero at the frequency
A
$$0.5$$ rad/sec
B
$$1$$ rad/sec
C
$$2$$ rad/sec
D
$$4$$ rad/sec
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