B 6192065 Pages:3

PART 0
Answer any two full questions, each carries 10 marks.
15 ஐ Sketch the polar plot for the following transfer function 10 ⋅ (6)
∙ s(1+ s)(1+0.05s)
b) Explain gain margin and phase margin of a system using Bode plot? (4)
16 Find the value of open loop gain k for അത്ത്‌ ത്ത so that the (10)
5(1--0.15)(1-- ऽ)
system has a) phase margin of 60" 0) gain margin 15 dB using Bode plot
17 For the system shown in figure determine the stability using Nyquist plot. (10)

१5) 10

($ +3)(s +5)

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