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. cos(nω1t) =

    2. A.
    0.5 (ejnω1t + e-jnω1t)
    B.
    0.05
    C.
    (ejnω1t + e-jnω1t)
    D.
    (ejnω1t - e-jnω1t)

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. Fourier transform of e-a|t| is

    3. View Answer

    Workspace

    Discuss Discuss in Forum

  3. Assertion (A): The wave shown in the given figure does not contain the dc component and even harmonics

    Reason (R): If f(- t) = f(t) the wave has only cosine terms.

    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. If xk = 0 for k < 0 and xk = 2k for k 3 0, X(z) i.e., Z transform of sequence x is

    5. View Answer

    Workspace

    Discuss Discuss in Forum

  5. The function δ'(t - b) is a unit doublet.

    6. A.
    True
    B.
    False

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. If £ f(t) = F(jω), then

    7. A.
    (jω)n F(jω)
    B.
    F(jω)/(jω)n
    C.
    (jω)n-1 F(jω)
    D.
    (b) F(jω)/(jω)n-1

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. The value of P(2 < x < 3) in function f(x) = K(x - 1) for K = 1 < x < 4 is

    8. A.
    B.
    1/3
    C.
    2/3
    D.
    1

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. Assertion (A): For the determinant the minor for
    a11 is

    Reason (R): The minor of any element of a determinant ajk is the determinant which remains when the row and column corresponding to ajk are deleted.

    9. 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

  9. The inverse response of a system h(n) = an∪(n) what is the condition for the system to be BIBO stable?

    10. A.
    a is real and +ve
    B.
    a is real and -ve
    C.
    |a| > 1
    D.
    |a| < 1

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. A system has poles at 0.01 Hz, 1 Hz and 80 Hz, zeros at 5 Hz, 100 Hz and 200 Hz. The approximate phase of the system response at 20 Hz is

    11. A.
    -90°
    B.
    0°
    C.
    90°
    D.
    -180°

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers