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GATE 2019: Control System Quiz 6
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Question 1
A unity feedback control system is characterized by the open-loop transfer function
G(s)=
The Nyquist path and the corresponding Nyquist plot of G(s) are shown in the figures below.
If 0 < K < 1, then the number of poles of the closed-loop transfer function that lie in the right – half of the s-plane is
G(s)=
The Nyquist path and the corresponding Nyquist plot of G(s) are shown in the figures below.
If 0 < K < 1, then the number of poles of the closed-loop transfer function that lie in the right – half of the s-plane is
Question 2
A plant transfer function is given as . When the plant operates in a unity feedback configuration, the condition for the stability of the closed loop system is
Question 3
The number and direction of encirclements around the point –1 + j0 in the complex plane by the Nyquist plot of is
Question 4
Figure shows the Nyquist plot of the open–loop transfer function G(s)H(s) of a system. If G(s) H(s) has one right hand pole, the closed loop system is
Question 5
Consider the feedback system shown in the figure. The Nyquist plot G(s) of is also shown. Which one of the following conclusions is correct?
Question 6
Consider a control system having open loop transfer function If all the finite poles has positive real part, then the polar plot of the system will be
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Feb 11ESE & GATE EE