1.

For the feedback system given below, the transfer function \(G\left( s \right) = \frac{1}{{{{\left( {s + 1} \right)}^2}}}.\) The system CAN NOT be stabilized with

A. \(C\left( s \right) = 1 + \frac{3}{s}\)
B. \(C\left( s \right) = 3 + \frac{7}{s}\)
C. \(C\left( s \right) = 3 + \frac{9}{s}\)
D. \(C\left( s \right) = \frac{1}{s}\)
Answer» D. \(C\left( s \right) = \frac{1}{s}\)


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