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Control Systems
Signal Flow Graph and Block Diagram
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Time Response Analysis
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Compensators
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Basic of Control Systems
Marks 1Marks 2
Frequency Response Analysis
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Stability
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Root Locus Diagram
Marks 1Marks 2
State Space Analysis
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1
GATE ECE 2013
MCQ (Single Correct Answer)
+1
-0.3
A polynomial $$f\left(x\right)\;=\;a_4x^4\;+\;a_3x^3\;+\;a_2x^2\;+\;a_1x\;-\;a_0$$ with all coefficients positive has
A
no real roots
B
no negative real root
C
odd number of real roots
D
at least one positive and one negative real root
2
GATE ECE 2000
MCQ (Single Correct Answer)
+1
-0.3
An amplifier with resistive negative feedback has two left half-plane poles in its open-loop transfer function. The amplifier
A
will always be unstable at high frequencies
B
will be stable for all frequencies
C
may be unstable, depending on the feedback factor
D
will oscillate at low frequencies
3
GATE ECE 2000
MCQ (Single Correct Answer)
+1
-0.3
A system described by the transfer function $$$H\left(s\right)=\frac1{s^3+\alpha s^2+ks+3}$$$ is stable. The constraints on $$\alpha$$ and k are,
A
$$\alpha>0,\;\alpha k<3$$
B
$$\alpha>0,\;\alpha k\;>\;3$$
C
$$\alpha\;<\;0,\;\alpha k\;>\;3$$
D
$$\alpha\;>\;0,\;\alpha k\;<\;3$$
4
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The number of roots of $$s^3\;+\;5s^2\;+\;7s\;+\;3\;=\;0$$ in the left half of the s-plane are
A
$$0$$
B
1
C
2
D
3
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Questions Asked from Marks 1
GATE ECE 2018 (2) GATE ECE 2016 Set 1 (1) GATE ECE 2015 Set 1 (1) GATE ECE 2014 Set 1 (1) GATE ECE 2013 (2) GATE ECE 2000 (2) GATE ECE 1998 (2)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics