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ECE :: Signals and Systems

Signals and Systems - Section 1
Signals and Systems - Section 2
Signals and Systems - Section 3
Signals and Systems - Section 4
Signals and Systems - Section 5
Signals and Systems - Section 6
Signals and Systems - Section 7
Signals and Systems - Section 8
Signals and Systems - Section 9
Signals and Systems - Section 10
Signals and Systems - Section-11

  1. The Fourier series of an odd periodic function contains

    2. A.
    odd harmonics only
    B.
    even harmonics only
    C.
    cosine harmonics only
    D.
    sine harmonics only

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  2. If , the terms in f(t) will have

    3. A.
    e-t and e-2t
    B.
    et and e2t
    C.
    te-t and te-2t
    D.
    none of the above

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  3. An impulse function consist of

    4. A.
    pure dc
    B.
    pure a.c
    C.
    entire frequency range with constant phase
    D.
    infinite bandwidth with linear phase vaariations

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  4. As per time displacement theorem in Laplace transformation, displacement in the time domain by T becomes

    5. A.
    division by s in the s domain
    B.
    division by e-sT in the s domain
    C.
    multiplication by s in the s domain
    D.
    multiplication by e-sT in the s domain

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  5. Which one is a causal system?

    6. A.
    y(n) = 3x[n] - 2x[n - 1]
    B.
    y(n) = 3x[n] + 2x[n + 1]
    C.
    y(n) = 3x[n + 1] + 2x[n - 1]
    D.
    y(n) = 3x[n + 1] 2x[n - 1] + x[n]

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  6. Double integration of a unit step function would lead to

    7. A.
    an impulse
    B.
    a parabola
    C.
    a ramp
    D.
    a doublet

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  7. If f(t) = A d(t - a), F(s) is

    8. A.
    A e-as
    B.
    A eas
    C.
    A a e-as
    D.
    Aa eas

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