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GATE 2020 || Control Systems || Nyquist Stability Crirteria & Analysis Quiz 1
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Question 1
If a Nyquist plot cuts the negative real axis at a distance of 0.6. Then the gain margin of the system is _______.
Question 2
Consider the following Nyquist plot of loop transfer function over ω = 0 to ω = ∞. Which of these plot’s represents a stable closed loop system.
Question 3
Nyquist plots of two functions G1(s) and G2(s) are shown in figure.
Nyquist plot of the product of G1(s) and G2(s)
Nyquist plot of the product of G1(s) and G2(s)
Question 4
Given below is the polar plot for the transfer function:
Which transfer function represents the following polar plot?
Which transfer function represents the following polar plot?
Question 5
If x = Re{G(jω)} and y = Img{G(jω)} then for ω → 0+, the Nyquist plot for becomes asymptotic to the line
Question 6
In the GH(s) plane, the Nyquist plot of the loop transfer function G(s) H(s) = passes through the negative real axis at the point
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Sep 1ESE & GATE EE