Control Systems The open loop transfer function for unity feedback system is given by 5(1+0.1s) / (s(1+5s)(1+20s)) Find the steady state error for a step input of magnitude 10 is equal to 5. infinite. zero. 2. 5. infinite. zero. 2. ANSWER DOWNLOAD EXAMIANS APP
Control Systems The transfer function of a phase lead compensator is given by: G(s) = (1 + 3Ts)/(1 + Ts) where T>0. What is the maximum phase shift provided by such a compensator? 45° 90° 60° 30° 45° 90° 60° 30° ANSWER DOWNLOAD EXAMIANS APP
Control Systems Find the conditions for the system to be stable? Gain margin and phase margins are positive Gain margin and phase margins are negative Gain margin is negative but phase margin is positive Gain margin is positive but phase margin is negative Gain margin and phase margins are positive Gain margin and phase margins are negative Gain margin is negative but phase margin is positive Gain margin is positive but phase margin is negative ANSWER DOWNLOAD EXAMIANS APP
Control Systems The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the excitation i(t) is a unit step, which of the following is the initial value? 1/4 3/9 0 3/5 1/4 3/9 0 3/5 ANSWER DOWNLOAD EXAMIANS APP
Control Systems The magnitude of a transfer function G(jω)H(jω) at gain cross over frequency is 0 1 any of the above infinity 0 1 any of the above infinity ANSWER DOWNLOAD EXAMIANS APP
Control Systems Negative feedback in a closed loop control system improves disturbance rejection. reduces gain. reduces sensitivity to parameter variation. All of these improves disturbance rejection. reduces gain. reduces sensitivity to parameter variation. All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS