1
GATE EE 2016 Set 1
MCQ (Single Correct Answer)
+1
-0.3
The phase cross-over frequency of the transfer function $$G\left( s \right) = {{100} \over {{{\left( {s + 1} \right)}^3}}}\,\,$$ in $$rad/s$$ is
A
$${\sqrt 3 }$$
B
$${1 \over {\sqrt 3 }}$$
C
$$3$$
D
$${3\sqrt 3 }$$
2
GATE EE 2016 Set 1
MCQ (Single Correct Answer)
+2
-0.6
Consider the following asymptotic Bode magnitude plot ($${\omega \,\,}$$ is in $$rad/s$$) GATE EE 2016 Set 1 Control Systems - Polar Nyquist and Bode Plot Question 16 English

Which one of the following transfer functions is best represented by the above Bode magnitude plot?

A
$${{2s} \over {\left( {1 + 0.5s} \right){{\left( {1 + 0.25} \right)}^2}}}$$
B
$${{4\left( {1 + 0.5s} \right)} \over {s\left( {1 + 0.25s} \right)}}$$
C
$${{2s} \over {\left( {1 + 2s} \right)\left( {1 + 4s} \right)}}$$
D
$${{4s} \over {\left( {1 + 2s} \right){{\left( {1 + 4s} \right)}^2}}}$$
3
GATE EE 2016 Set 1
MCQ (Single Correct Answer)
+2
-0.6
Loop transfer function of a feedback system is $$G\left( s \right)H\left( s \right) = {{s + 3} \over {{s^2}\left( {s - 3} \right)}}.$$ Take the Nyquist contour in the clockwise direction. Then, the Nyquist plot of $$G(s)$$ $$H(s)$$ encircles $$-1+j0$$
A
once in clockwise direction
B
twice in clockwise direction
C
once in anticlockwise direction
D
twice in anticlockwise direction
4
GATE EE 2016 Set 1
Numerical
+2
-0
Consider the following state - space representation of a linear time-invariant system.
$$\mathop x\limits^ \bullet \left( t \right) = \left[ {\matrix{ 1 & 0 \cr 0 & 2 \cr } } \right]\,\,x\left( t \right),\,\,y\left( t \right) = {c^T}x\left( t \right),\,c = \left[ {\matrix{ 1 \cr 1 \cr } } \right]$$ and
$$x\left( 0 \right) = \left[ {\matrix{ 1 \cr 1 \cr } } \right]$$

The value of $$y(t)$$ for $$t\,\,\, = \,\,{\log _e}2$$ ___________.

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