Control Systems
A second order system has peak over shoot = 50% and period of oscillations 0.2 seconds. Find the resonant frequency?

 30.63 rad/s
 29.74 ra/s
 31.41 rad/s
 32.16 rad/s

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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

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

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