57. For the transfer function G (s) H (s) s(s + 1) (s + 0.5) the phase cross-over frequency is
58. A linear stable invariant system is forced with an input x (t) = A sin cot x (t) ---> G (s) --> y(t) Under steady-state conditions, the output y(t) of the system will be
59. A unity feedback control system has a forward path transfer function equal to 42.25 s(s + 6.5) The unit step response of this system starting from rest, will have its maximum value at a time equal to
60. A plant has the following transfer function :G(s) ? (s2 + 0.2s + 1)From a step input it is required that the response settles to within 2% of its final value. The plant setting time is
61. The maximum phase shift that can be provided by a lead compensator with transfer function
62. The transfer function of a compensating network is of the form (1 + aTs) . If this (1 + Ts) is a phase-lag network, the value of a should be
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