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  1. Which one of the following transfer function represents the Bode plot shown in the given figure?


    1. G(s) = 1– s/1 + s
    2. G(s) = 1/(1 + s)2
    3. G(s) = 1/s2
    4. G(s) = 1/s(1 + s)
Correct Option: A

It can be easily checked that the corresponding function is G(s) = 1 – s/1 + s
Since |G(jω)| = 1 and gain in dB = 0 is given.



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