Home / ECE / Network Analysis and Synthesis :: Section 23

ECE :: Network Analysis and Synthesis

  1. Which pair is correctly matched?

  2. A.
    Symmetrical two port AD - BC = 1
    B.
    Reciprocal two port z11 = z12
    C.
    Inverse hybrid parameter A, B, C, D
    D.
    hybrid parameter (V1, I2) = f(I1, V2)

  3. Mesh analysis is applicable __________ only.

  4. A.
    planar network
    B.
    non planar network
    C.
    a circuit which contains only current sources
    D.
    none

  5. In the circuit shown the voltage Vs has a phase angle of __________ with respect to VL.

  6. A.
    120°
    B.
    60 °
    C.
    -90 °
    D.

  7. The circuit of figure is generally employed as a

  8. A.
    bridge
    B.
    low-pass filter
    C.
    peaking network
    D.
    high-pass filter

  9. A nickel cadmium cell is an alkaline cell.

  10. A.
    True
    B.
    False

  11. When analysing two port networks in parallel it is more convenient to use

  12. A.
    z parameters
    B.
    h parameters
    C.
    T parameters
    D.
    y parameters

  13. In ZRC (s) = 0 at s = ∞, the last element in first Cauer form is

  14. A.
    R
    B.
    C
    C.
    R and C in series
    D.
    R and C in parallel

  15. The function H (s) is positive real if

  16. A.
    H (s) has no poles or zeros in right half plane
    B.
    The poles of H(s) on the imaginary axis are simple with real and positive residues
    C.
    Re [H()] ≥ 0 for 0 ≤ ω ≤ ∞
    D.
    all of the above

  17. In most electric irons, the thermister used for controlling temperature is

  18. A.
    vapour-filled bulb
    B.
    high-expansion steel rod
    C.
    bimetallic strip
    D.
    thermopile

  19. In a series RLC high Q circuit the current peaks at a frequency.

  20. A.
    equal to the resonant frequency
    B.
    greater than the resonant frequency
    C.
    less than the resonant frequency
    D.
    none