Control Systems
For a second order under damped system subjected to unit step input the time response has first peak value to be 4 times the second over shoot. Determine the damping ratio ξ ?

 0.07
 0.087
 0.87
 0.707

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Control Systems
For a transfer function H (s) = P(s) / Q(s), where P (s) and Q (s) are polynomials in s. Then

  degree of P (s) is independent of degree of Q (s).
 the degree of P (s) and Q (s) are same.
 the degree of P (s) is always greater than the degree of Q (s).
 maximum degree of P (s) and Q (s) differ at most by one.

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