Signals and systems electrical engineering miscellaneous


Signals and systems electrical engineering miscellaneous

  1. A periodic triangular wave is shown in the figure. Its Fourier components will consist only of









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    Only sine functions, as it has the odd symmetry.

    Correct Option: B

    Only sine functions, as it has the odd symmetry.


  1. The Fourier series representation of a periodic current is
    [2 + 6 √2 cos ωt + √48sin 2ωt]A.
    The effective value of the current is









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    NA

    Correct Option: B

    NA



  1. The period of the function cos π/4 (t– 1) is









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    =
    π
    ,
    T4

    ⇒ T = 8 sec

    Correct Option: B

    =
    π
    ,
    T4

    ⇒ T = 8 sec


  1. A linear system has the transfer functi on
    H(jω) =
    1
    (jω + 1)

    When it is subjected to an input white noise process with a constant spectral density A, the spectral density of the output will be









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    NA

    Correct Option: B

    NA



  1. The aver age value of t he del ayed full-wave rectified sine wave as shown in the given figure, is









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    NA

    Correct Option: C

    NA