 # Electrical Engineering Objective Questions { Control System }

316.  Consider a unity-gain feedback control system whose open-loop transfer function is as +1 G(s) = s2 The value of 'a' so that the system has a phase-margin equal to ? is approximately equal to

317.  Consider a unity-gain feedback control system whose open-loop transfer function is as +1 G(s) = s2 With the value of 'a' set for a phase-margin of ?, the value of unit-4 K(s + 1)(s3 + as2 + 2s + 1) impulse response of the open-loop system at t = 1 second is equal to

318.  Which one of the following function is strictly bounded?

319.  Four the function approximation around

320.  If the closed-loop transfer function of a control system is given as s- 5 T(s) = , then it is (s + 2)(s + 3)

321.  Consider the function f(x) = x2 - x -2. The maximum value off(x) in the closed interval 1-4, 41 is

322.  The solution of the differential equation 2 d2Yk --2- = y - y2 under the boundary dx conditions (i) y = yi at x = 0 and (ii) y = y2 at x = 00, where k, y1 and y2 are constants, is

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