Home / ECE / Network Analysis and Synthesis :: Section 24

ECE :: Network Analysis and Synthesis

  1. In the circuit shown in the given figure, switch k is closed at t = 0. The circuit was initially relaxed then which one of the following sources of v(t) will produce maximum current at t = 0+?

  2. A.
    Unit step
    B.
    Unit impulse
    C.
    Unit ramp
    D.
    Unit step plus unit ramp

  3. Pick the correct statement

  4. A.
    Delta connection draws same current as star connection
    B.
    Delta connection draws 3 times as much current as star connection
    C.
    Delta connection draws of the current of star connection
    D.
    Delta connection draws of the current of delta connection

  5. The inverse Fourier transform of is

  6. A.
    sin ωt
    B.
    cos ωt
    C.
    sgn (t)
    D.
    u (t)

  7. The colour on the extreme left in general purpose fixed resistors represents

  8. A.
    first significant digit
    B.
    tolerance
    C.
    wattage rating
    D.
    voltage rating

  9. When a current flows through a conductor,

  10. A.
    an electric field exists at all points within the conductor
    B.
    electric field exists only at all points on the surface of the conductor
    C.
    electric field exists only at ends of the conductor
    D.
    any of the above depending on magnitude of current

  11. In the analogy between electric and magnetic circuits permeability is analogous to

  12. A.
    resistivity
    B.
    conductivity
    C.
    electric field intensity
    D.
    current density

  13. Two port circuits are connected in parallel. To determine the response, it is more convenient to use

  14. A.
    O.C. impedance parameters
    B.
    S.C. admittance parameters
    C.
    ABCD parameters
    D.
    h parameters

  15. The dual of a link is

  16. A.
    twig
    B.
    node
    C.
    loop
    D.
    tree branch

  17. A network is said to be two port network if there is

    1. no independent source in the network
    2. no dependent source in the network
    3. non-linear component in the circuit
    4. no external connection exist between I/P and 0/P

  18. A.
    1, 2, 3
    B.
    3, 4, 2
    C.
    1, 3, 4
    D.
    4, 3, 1, 2

  19. In a network

  20. A.
    the number of tree branches is always less than the number of links
    B.
    the number of tree branches is always more than the number of links
    C.
    the number of tree branches and links are always equal
    D.
    the number of tree branches has no relation with the number of links