GATE EE 2015 Set 1 — Question 34
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Control Systems → Frequency Response & Root Locus → Bode Plots
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Question
A Bode magnitude plot for the transfer function of a plant is shown in the figure. Which one of the following transfer functions best describes the plant?
Correct answer
(D) (s+1000)/(10(s+10))
Solution
1.Low frequency gain: .
2.Corner frequencies: At , the slope changes from to , indicating a pole at (assuming standard rad/s notation in options). At , the slope changes from to , indicating a zero at .
3.Transfer function form: .
4.This matches option (D).
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