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Discussion :: Automatic Control Systems

  1. If phase angle of open loop transfer function becomes - 180° at frequency ω1, then gain margin is equal to

    2. A.
    |G(jω1)|
    B.
    C.
    1 + |G(jω1)|
    D.

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    Answer : Option B

    Explanation :

    If gain is a, gain margin is . In this case gain is |G(jω1)|.

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