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A unity feedback system with open-loop transfer function G (s) = 4/[s(s+p)] is critically damped. The value of the parameter p is

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A unity feedback system with open-loop transfer function G (s) = 4/[s(s+p)] is critically damped. The value of the parameter p is

(a) 4

(b) 3

(c) 2

(d) 1

This question was addressed to me in an internship interview.

This interesting question is from Construction of Phase-Trajectories topic in section Nonlinear Systems of Control Systems

1 Answer

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Best answer
The correct option is (a) 4

The best explanation: The value of the p can be calculated by comparing the equation with the standard characteristic equation.

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