The state equation of a system is \mathop X\limits^ \cdot = \left[ {\begin{array}{*{20}{c}}
0&1\\
{ - 20}&9
\end{array}} \right]X + \left[ \begin{array}{l}
0\\
1
\end{array} \right]u
The poles of this system are located at:
For good response of a second order control system-
1. higher tp (peak time) is needed
2. the maximum or peak overshoot must be less
3. The steady state error(ess) is less
4. The maximum or peak overshoot must be higher
Which of the above statements are correct?
Which of the following statements concerning the Bode plot are correct?
1. The relative stability can be obtained using Bode plots.
2. For a system with time delay, the phase plot does not reach a minimum value.
3. For a minimal system phase system, the phase plot reaches a minimum value.
4. Gain and phase margin can be used to ascertain the stability of a system using Bode plot.
For a unity feedback system with open-loop transfer function s(s+6)25, the resonant peak output Mm and the corresponding resonant frequency ωm are, respectively
Which of the following can work as error detecting devices?
1. A pair of potentiometers
2. A pair of synchros
3. A differential transformer
4. A Metadyne
5. A control transformer
Consider the speed control system shown in the figure wherein the inner loop corresponds to motor back e.m.f, the controller is an integrator with gain K observes that the load is inertia only. What is the value of K for which steady-state error to unit ramp input (Vr(s)=s21) is less than 0.01 rad/sec?
The closed loop transfer function of a control system is: s(s+1)(s+5)+KK
What is the frequency of the sustained oscillations for marginally stable condition?
A second-order linear time-invariant system is described by the following state equations dtd x1(t) + 2x1(t) = 3u(t) dtd x2(t) + x2(t) = u(t)
where x1(t) and x2(t) are the two state variables and u(t) denotes the input. If the output c(t) = x1(t) , then the system is
