GATE EC 2017 Set 2 — Question 47
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Control Systems → State-Space Analysis → First & Second-Order Response
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Question
A second-order LTI system is described by the following state equations,where and are the two state variables and denotes the input. The output . The system is
Correct answer
(D) overdamped
Solution
The state equations can be rewritten as:In matrix form :The characteristic equation is found from :The roots of the characteristic equation are:Since the roots are real, negative, and distinct, the system is overdamped.
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