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ECE :: Signals and Systems

  1. Laplace transform of unit doublet is

  2. A.
    1/s
    B.
    s2
    C.
    s
    D.
    none

  3. The integral of a unit step function is

  4. A.
    a unit impulse function
    B.
    a unit pulse function
    C.
    a ramp function of slope 1
    D.
    none of the above

  5. Highest value of autocorrelation function 100 sin 50 pt is

  6. A.
    50
    B.
    zero
    C.
    100
    D.
    100/p

  7. A voltage wave containing 10% third harmonic is applied to a scries R-L circuit. The percentage third harmonic content in the current wave will be

  8. A.
    more than 10%
    B.
    10% or less than 10%
    C.
    less than 10%
    D.
    10% or more or less