Menu
Home / ECE / Signals and Systems :: Section 9

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. If xk = 0 for k < 0 and = 2k for k ≥ 0 X(z) = z/(z -2).

    2. A.
    True
    B.
    False

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. Assertion (A): If an event A can happen in m ways and another event B can happen in n ways, both can happen in mn ways.

    Reason (R): Two events are mutually exclusive if happening of either precludes the occurrence of other.

    3. 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

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. Assertion (A): In the curve , a high value of h indicate a high peak and rapid fall in the curve.

    Reason (R): If the number of ways in an event may result can be analysed into a successes and b failures, each equally likely to occur, the probability of success in a single trial is

    4. 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

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. Which one of the following digital filters does have a linear phase response?

    5. A.
    y(n) + y(n - 1) = x(n) - x(n - 1)
    B.
    C.
    D.

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. For a second order system, damping ratio ζ is such that 0 < ζ <. Then the roots of characteristic equation are

    6. A.
    real but not equal
    B.
    real and equal
    C.
    complex conjugate
    D.
    imaginary

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. If is scaled as an x[n] then ROC changes from `R` to

    7. A.
    Ra
    B.
    R
    C.
    R/a
    D.
    R + a

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. If f(t)↔ F(jω), and f(t) is real, then F(- jω)

    8. A.
    F(jω)
    B.
    F*(j↔)
    C.
    F*(- jω)
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. Fourier transform o the function f(t) = 1 is

    9. A.
    2p δ (ω)
    B.
    p δ (ω)
    C.
    δ(ω)/2p
    D.
    δ(ω)/p

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. The region of converage of z-transform of sequence must be

    10. View Answer

    Workspace

    Discuss Discuss in Forum

  10. If a function f(t) is an odd, function, its Fourier series

    11. A.
    contains only sine terms
    B.
    contains only cosine terms
    C.
    contains a constant and sine terms
    D.
    contains a constant and cosine

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers