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Discussion :: GATE Instrumentation

  1. Consider a plant with the transfer function G(s) = 1/(s + 1)3. Let Ku and Tu be the ultimate gain and ultimate period corresponding to the frequency response based closed loop Ziegler-Nichols cycling method, respectively. The Ziegler-Nichols tuning rule for a P-controller is given as : K = 0.5 Ku. 
    The gain of the transfer function between the plant output and an additive load disturbance input of frequency 2Ï€/Tu in closed loop with a P-controller designed according to the Ziegler-Nichols tuning rule as given above is
    2. A.
    -1.0
    B.
    0.5
    C.
    1.0
    D.
    2.0

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    Workspace

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    Answer : Option D

    Explanation :

    -NA-

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