# Electrical Engineering Objective Questions { Control System }

309. The dopen loop transfer function of a unity feedback system is given by 3e-2G(s) - s(s+ 2) The gain and phase crossover frequencies in rad/sec are, respectively

310.  The dopen loop transfer function of a unity feedback system is given by 3e-2G(s) - s(s+ 2) Based on the above results, the gain and phase margins of the system will be

311.  The open-loop transfer function of a unity-gain feedback control system is given by G(s)= (s +1) (s + 2) The gain margin of the system in dB is given by

312.  For the function of a complex variable W = In Z (where, W = u + jv and Z = x + jy), the u = constant lines get mapped in 1-plane as

313.  Consider two transfer functions Gi(s)=s2+as+b and G2(s) =S2 -i-as+b The 3-dB bandwidths of their frequency responses are, respectively

314.  The Nyquist plot of G (Jm) H (Jo)) for a closed loop control system, passes through (-1, j0) point in the CH plane. The gain margin of the system in dB is equal to

315.  The transfer function of a phase-lead compensator is given by 1+ 3Ts 1+Ts where T > 0 The maximum phase-shift provided by such a compensator is It

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