Menu
Home / ECE / Signals and Systems :: Section 5

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 a linear time invartant system is exicited by a pure random signal like white noise, the output of the linear system will have which of the following properties?

    2. A.
    Output will be a white noise
    B.
    Output will be periodic
    C.
    Output will be random
    D.
    Output will be correlated or coloured noise

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. The enery E associated with time function f(t) is

    3. View Answer

    Workspace

    Discuss Discuss in Forum

  3. A signum function is

    4. A.
    zero for t greater than zero
    B.
    zero for t less than zero
    C.
    unity for t greater than zero
    D.
    2∪(t) - 1

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. Give that is

    5. A.
    B.
    C.
    D.
    None of these

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. If f(k) ↔ F(z), then kn fk ↔

    6. A.
    [F(z)]n
    B.
    C.
    [F(z)]1/n
    D.

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. If a number of even functions are added, the resultant sum is

    7. A.
    even function
    B.
    odd funtion
    C.
    either even or odd function
    D.
    mixture of odd amd even functions

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. For the differential equation (D3 - D2 + D -1) [y(t)] = 0 the root of auxiliary equation are

    8. A.
    -j, j, 1
    B.
    -j, j, 2
    C.
    1, 2, j
    D.
    1, 2, -j

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. If F[jω] is Fourier transform of f(t), then Fourier transform of f(- t) =

    9. A.
    - F(jω)
    B.
    C.
    F*(jω)
    D.

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. The auto correlation of a sampling function is a

    10. A.
    triangular function
    B.
    gate function
    C.
    signum function
    D.
    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. The solution of state equations using Laplace transform is

    11. A.
    x(t) = φ(t) x(0) + L-1 [φ(s) Bu(s)]
    B.
    x(t) = φ(s) x(0) + L-1 [φ(s) Bu(s)]
    C.
    x(t) = eAt X(0) + eA(t-t) Bu(t)dt
    D.
    Both (a) and (b)

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers