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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. A rectangular pulse is passed through an L.P.F. The response is a

    2. A.
    triangular
    B.
    trapezoidal function
    C.
    sampling
    D.
    Both (a) and (b)

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  2. Consider z transform of a signal as given below

    then the response will be

    3. A.
    IIR
    B.
    FIR
    C.
    Depends on value of n
    D.
    Cannot determined

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  3. The eigen values of matrix are

    4. A.
    1, 1
    B.
    - 1, - 1
    C.
    j, - j
    D.
    1, - 1

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  4. Assertion (A): If , the final value of i(t) is 2A

    Reason (R): As per final value theroem

    5. A.
    Both A and R are correct and R is correct explanation of A
    B.
    Both A and R are correct but R is not correct explanation of A
    C.
    A is true, R is false
    D.
    A is false, R is true

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  5. A signal f(t) = cos 10pt + 3 cos 4pt is instantaneously sampled. The maximum allowable value of sampling interval Ts in sec is

    6. A.
    1 / 4 sec
    B.
    1 / 8 sec
    C.
    1 / 8p sec
    D.
    1 / 10 sec

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  6. The initial value theorem is

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  7. Assertion (A): The rms value of v = 1 + sin ωt is 1.5

    Reason (R): If i = I0 + I1m sin ω1t + I3m sin 3ω1t, then

    8. A.
    Both A and R are correct and R is correct explanation of A
    B.
    Both A and R are correct but R is not correct explanation of A
    C.
    A is true, R is false
    D.
    A is false, R is true

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  8. The exponential form of Fourier series is

    9. A.
    B.
    C.
    D.
    Both (a) and (b)

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  9. Principle of superposition is applicable to

    10. A.
    linear systems only
    B.
    nonlinear systems only
    C.
    both linear and non linear system
    D.
    linear systems and some nonlinear systems

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  10. The range of value "a" for which system will be stable. If impulse response of DT system is = an ∪[n]

    11. A.
    a > 1
    B.
    a < 1
    C.
    1 < a < ∞
    D.
    -1 < a < 1

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