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A singleinput singleoutput feedback system has forward transfer function G(s) and feedback transfer function H(s). It is given that G(s)H(s) < 1. Which of the following is true about the stability of the system?
From the below given Nyquist plot, calculate the number of openloop poles on the righthand side of the splane for the closedloop system to be stable.
The most important technique used for stability and the transient response of the system is
The number and direction of encirclements around the point −1+j0 in the complex plane by the Nyquist plot of
In Nyquist plot of a system on adding a pole at s = 0, then plot will 
The frequency at which the Nyquist plot of a unity feedback system with the open loop transfer function crosses the negative real axis is
If the Nyquist plot cuts the negative real axis at a distance of 0.8, then the gain margin of the system is
The figure shows the Nyquist plot of the openloop transfer function G(s)H(s) of a system. If G(s)H(s) has one righthand pole, the closedloop system is
Consider a closedloop control system with unity negative feedback and KG(s) in the forward path, where the gain K = 2. The complete Nyquist plot of the transfer function G(s) is shown in the figure. Note that the Nyquist contour has been chosen to have the clockwise sense. Assume G(s) has no poles on the closed righthalf of the complex plane. The number of poles of the closedloop transfer function in the closed righthalf of the complex plane is ___________.
The open loop transfer function of a unity gain negative feedback system is given as
The Nyquist contour in the ��plane encloses the entire right half plane and a small neighbourhood around the origin in the left half plane, as shown in the figure below. The number of encirclements of the point (−1 + j0) by the Nyquist plot of G(s), corresponding to the Nyquist contour, is denoted as N. Then N equals to
24 docs263 tests

Test: Compensators  1 Test  10 ques 
Test: Compensators  2 Test  14 ques 
Test: Controllers & Compensators  1 Test  10 ques 
Test: Controllers & Compensators  2 Test  20 ques 
Test: RouthHurwitz Stability Criteria Test  10 ques 
24 docs263 tests

Test: Compensators  1 Test  10 ques 
Test: Compensators  2 Test  14 ques 
Test: Controllers & Compensators  1 Test  10 ques 
Test: Controllers & Compensators  2 Test  20 ques 
Test: RouthHurwitz Stability Criteria Test  10 ques 