Question: Consider a unity feedback system with the loop transfer function (a) For K = 4, show that the gain margin is 3.5 dB. (b) If

Consider a unity feedback system with the loop transfer function
Consider a unity feedback system with the loop transfer function

(a) For K = 4, show that the gain margin is 3.5 dB.
(b) If we wish to achieve a gain margin equal to 16 dB, determine the value of the gain K.

L(s) = Ge(s)G(s) = s(s + 1)(s + 2).

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