Control Systems A second order control system is defined by the following equation: 4 d²c(t)/dt² + 8 dc(t)/dt + 16 c(t) = 16 u(t) The damping ratio and natural frequency for this system are respectively 0.50 and 4 rad/s 0.25 and 4 rad/s 0.50 and 2 rad/s 0.25 and 2 rad/s 0.50 and 4 rad/s 0.25 and 4 rad/s 0.50 and 2 rad/s 0.25 and 2 rad/s ANSWER DOWNLOAD EXAMIANS APP
Control Systems A system has poles at 0.01 Hz, 1 Hz and 80 Hz; zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is -90° 90° 180° -180° -90° 90° 180° -180° ANSWER DOWNLOAD EXAMIANS APP
Control Systems The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its open loop transfer function is (2s+1)/(s+1)² (2s+2)/(s+1)² (2s+2)/s² (2s+1)/s² (2s+1)/(s+1)² (2s+2)/(s+1)² (2s+2)/s² (2s+1)/s² ANSWER DOWNLOAD EXAMIANS APP
Control Systems The optimum values of damping ratio is -------------- 0.9 to 1.1 0 to 2 0.3 to 5 0.3 to 0.7 0.9 to 1.1 0 to 2 0.3 to 5 0.3 to 0.7 ANSWER DOWNLOAD EXAMIANS APP
Control Systems A second order control system has a transfer function 16/(s² + 4s + 16). What is the time for the first overshoot? π/4√3 sec 2π/√3 sec π/√3 sec π/2√3 sec π/4√3 sec 2π/√3 sec π/√3 sec π/2√3 sec ANSWER DOWNLOAD EXAMIANS APP
Control Systems The type number of the control system with G(s) = k(s+2)/(s(s²+2s+3) is 3 2 1 0 3 2 1 0 ANSWER DOWNLOAD EXAMIANS APP
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