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Discussion :: GATE Instrumentation

  1. The open loop transfer function of a unity gain negative feedback control system is given by G(s) = (s2 + 4s + 8)/[s(s + 2)(s + 8)]. The angle θ , at which the root locus approaches the zeros of the system, satisfies
  2. A.
    |θ| = π - tan-1 (1/4)
    B.
    |θ| = 3π/4 - tan-1 (1/3)
    C.
    |θ| = π/2 - tan-1 (1/4)
    D.
    |θ| = π/4 - tan-1 (1/3)

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    Answer : Option D

    Explanation :

    -NA-


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