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03000EE303092001

feedback system whose open loop transfer function is given by

G(s) = <

Illustrate the time response of a second order system according to the nature of
roots of the characteristic equation.
PART 0
Answer any two full questions, each carries 10 marks.

Define the resonant frequency, resonant peak, bandwidth, phase margin and gain

margin of a control system

Draw the polar plot of the open loop system G(s) = and analyse the

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‎closed loop stability. Here rough sketch is sufficient.

The open loop transfer function of unity feedback system is

G(s) = ന നി . Draw the bode plot and hence determine the stability
of closed loop system.

Given open loop system G(s) = ‏و‎ , analyse the closed loop stability using
Nyquist stability criterion.

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