1
GATE ECE 1992
Subjective
+8
-0
A unity feedback system has open-loop transfer function
$$G(s) = {1 \over {s\left( {2s + 1} \right)\left( {s + 1} \right)}}$$
Sketch Nyquist plot for the system and there from obtain the gain margin and the phase margin.
2
GATE ECE 1987
Subjective
+8
-0
The magnitude plot of the open loop transfer function G(s), of a certain system is given in fig,
(b) Estimate the phase at each of the corner frequencies.
(a) Determine G(s), if it is known that the system is of minimum phase type.
(b) Estimate the phase at each of the corner frequencies.
Questions Asked from Frequency Response Analysis (Marks 8)
Number in Brackets after Paper Indicates No. of Questions
GATE ECE Subjects
Network Theory
Control Systems
Electronic Devices and VLSI
Analog Circuits
Digital Circuits
Microprocessors
Signals and Systems
Representation of Continuous Time Signal Fourier Series Discrete Time Signal Fourier Series Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Transmission of Signal Through Continuous Time LTI Systems Discrete Time Linear Time Invariant Systems Sampling Continuous Time Signal Laplace Transform Discrete Fourier Transform and Fast Fourier Transform Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Fourier Transform
Communications
Electromagnetics
General Aptitude