is connected in a negative feedback configuration with a feedback gain of unity. For the closed loop system to be marginally stable, the value of K is ______
Question 2
A continuous-time LTI system with system function has the following pole-zero plot. For this system, which of the alternatives is TRUE?
Question 3
The block diagram of a system is shown in the figure
If the desired transfer function of the system is then G(s) is
Question 4
Consider the unity feedback control system described by following state-space equations
If u(t) is unit step input, then the steady state error of the system is
Question 5
The root locus of the feedback control system having the characteristic equation where K >0 enters into the real axis at
Question 6
For the given unity feedback control system, determine the time at which the maximum overshoot occurs.
Question 7
The characteristic equation for a feedback control system is
The condition for stability is
Question 8
For open loop transfer function The asymptotic Bode magnitude plot is
Question 9
The open loop transfer function of a unity feedback control system is given by If the system becomes critically damped, then the system gain ‘K’ tends to become _____.
Question 10
For a control system shown below, the resonant peak is ______.
Question 11
The open loop transfer function of a unity feedback system is given by G(s) = (e–0.1s)/s. The gain margin of this system is
Question 12
What is the magnitude of the transfer function in dB, of a second-order system on its bode plot, when the frequency is equal to the cut-off frequency?
Question 13
Determine the value of G(s) if the closed loop transfer function for the given system is:
Question 14
The bode plot of the transfer function, G(s) = is shown below. The error in gain at𝜔=is _______dB
Question 15
The critical value of gain for the system is 80. The system is operating at a gain of 40. The G.M. (dB) of the system is______?
Question 16
A type 1 system has the following Nyquist Plot having one pole in the right half of s-plane, for w=00 to w=+. What does this Nyquist Plot tell about the closed loop system?
Question 17
The asymptotic Bode magnitude plot of a lead network with its pole and zero on left half of the s-plane is shown in figure. The frequency at which the phase angle of the network is maximum (in rad/sec) is
Question 18
The polar diagram of a conditionally stable system for open loop gain K=1 is shown in figure. The open loop transfer function of the system is known to be stable. The closed-loop system is stable for
Question 19
The Nyuist plot of an OLTF of a unity feedback system is given in the figure below. The PM and GM are respectively
Question 20
The second order dynamic system
has the matrices P, Q and R as follows:
The system has the following controllability and observability properties: