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 0.50 and 2 rad/s 0.25 and 4 rad/s 0.25 and 2 rad/s 0.50 and 4 rad/s 0.50 and 2 rad/s 0.25 and 4 rad/s 0.25 and 2 rad/s ANSWER DOWNLOAD EXAMIANS APP
Control Systems If the transfer function of a phase lead compensator is (s+a)/(s+b) and that of a lag compensator is (s+p)/(s+q), then which one of the following sets of conditions must be satisfied? a > b, p > q a < b, p >q a > b, p < q a < b, p < q a > b, p > q a < b, p >q a > b, p < q a < b, p < q ANSWER DOWNLOAD EXAMIANS APP
Control Systems The impulse response of an initally relaxed linear system is e-2tu(t). To produce a response of te-2tu(t), the input must be equal to e-tu(t). 2e-tu(t). (0.5)e-2tu(t). e-2tu(t). e-tu(t). 2e-tu(t). (0.5)e-2tu(t). e-2tu(t). ANSWER DOWNLOAD EXAMIANS APP
Control Systems In polar plots if the critical point '-1+j0' is enclosed then the system is -------- critical stable marginally stable unstable stable critical stable marginally stable unstable stable ANSWER DOWNLOAD EXAMIANS APP
Control Systems An open loop control system, represented by the transfer function G ( s ) = ( s - 1 ) / ( s + 2 )( s + 3 ), is unstable and of the non minimum phase type . unstable and of the minimum phase type. stable and of the non-minimum phase type. stable and of the minimum phase type. unstable and of the non minimum phase type . unstable and of the minimum phase type. stable and of the non-minimum phase type. stable and of the minimum phase type. ANSWER DOWNLOAD EXAMIANS APP
Control Systems The impulse response of a system is c(t) = -te-t + 2 e-t (t>0). Its closed loop transfer function is (2s+1)/s² (2s+2)/s² (2s+2)/(s+1)² (2s+1)/(s+1)² (2s+1)/s² (2s+2)/s² (2s+2)/(s+1)² (2s+1)/(s+1)² ANSWER DOWNLOAD EXAMIANS APP
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