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Control Systems
Block Diagram and Signal Flow Graph
Marks 1Marks 2
Polar Nyquist and Bode Plot
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State Variable Analysis
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Basics of Control System
Marks 1Marks 2
Routh Hurwitz Stability
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Time Response Analysis
Marks 1Marks 2
Root Locus Techniques
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Controller and Compensator
Marks 1Marks 2
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1
GATE EE 2014 Set 1
MCQ (Single Correct Answer)
+1
-0.3
In the formation of Routh-Hurwitz array for a polynomial, all the elements of a row have zero values. This premature termination of the array indicates the presence of
A
only one root at the origin
B
imaginary roots
C
only positive real roots
D
only negative roots
2
GATE EE 2009
MCQ (Single Correct Answer)
+1
-0.3
The first two rows of Routh's tabulation of a third order equation are as follows $$$\left. {\matrix{ {{s^3}} \cr {{s^2}} \cr } } \right|\matrix{ 2 & 2 \cr 4 & 4 \cr } $$$
this means there are

A
two roots at $$s$$ $$ = \pm j$$ and one root in right half $$s$$ - plane
B
two roots at $$s$$ $$ = \pm j2$$ and one root in left half $$s$$ - plane
C
two roots at $$s$$ $$ = \pm j2$$ and one root in right half $$s$$ - plane
D
two roots at $$s$$ $$ = \pm j$$and one root in left half $$s$$ - plane
3
GATE EE 2007
MCQ (Single Correct Answer)
+1
-0.3
The system shown in the figure is GATE EE 2007 Control Systems - Routh Hurwitz Stability Question 4 English
A
stable
B
Unstable
C
conditionally stable
D
stable for input $${u_1},$$ but unstable for input $${u_2},$$
4
GATE EE 1998
MCQ (Single Correct Answer)
+1
-0.3
None of the poles of a linear control system lie in the right half of $$s$$-plane. For a bounded input, the output of this system
A
is always bounded
B
could be unbounded
C
always tends to zero
D
None of the above
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Questions Asked from Marks 1
GATE EE 2022 (1) GATE EE 2017 Set 1 (1) GATE EE 2014 Set 3 (1) GATE EE 2014 Set 1 (1) GATE EE 2009 (1) GATE EE 2007 (1) GATE EE 1998 (1) GATE EE 1995 (1) GATE EE 1994 (2) GATE EE 1992 (1)
GATE EE Subjects
Electromagnetic Fields
Signals and Systems
Engineering Mathematics
General Aptitude
Power Electronics
Power System Analysis
Analog Electronics
Control Systems
Digital Electronics
Electrical Machines
Electric Circuits
Electrical and Electronics Measurement