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When the unit step response of a unity feedback control system having forward path transfer function G (s) =80/s(s+18)?

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When the unit step response of a unity feedback control system having forward path transfer function G (s) =80/s(s+18)?

(a) Overdamped

(b) Critically damped

(c) Under damped

(d) Un Damped oscillatory

The question was posed to me in quiz.

Query is from Time Domain Analysis in division Stability in Frequency Domain of Control Systems

1 Answer

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Best answer
Right option is (a) Overdamped

The best explanation: The open loop transfer function is first converted into the closed loop as unity feedback is used and then value of damping factor is calculated.

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