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ECE :: Network Analysis and Synthesis

  1. The poles of an RC function

  2. A.
    are simple and lie or negative real axis
    B.
    are simple and lie on ω axis
    C.
    must be complex conjugate
    D.
    may be anywhere on s plane

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  3. For circuit in figure, which combination of VTH and RTH represents the circuit as seen from ab?

  4. A.
    1 V, 10 Ω
    B.
    1 V, 1000 Ω
    C.
    1 mV, 1000 Ω
    D.
    1 mV, 10 Ω

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  5. Damping ratio =

  6. A.
    actual resistance/critical resistance
    B.
    critical resistance/actual resistance
    C.
    critical resistance
    D.
    none of the above

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  7. In admittance parameter set, the dependent variables are the currents at the two ports.

  8. A.
    True
    B.
    False

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  9. A constant k low pass filter has fc = 500 Hz. At f = 1000 Hz, the attenuation is

  10. A.
    zero
    B.
    infinity
    C.
    may be zero or infinity
    D.
    more than zero but less than infinity

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  11. If two network is connected in series-parallel connection then

  12. A.
    h = [ha] + [hb]
    B.
    [aa] + [bb]
    C.
    [Z] = [Za] - [Zb]
    D.
    none

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  13. For the two ports in figure, y11 = 8 mho, y12 = y21 = -6 mho and y22 = 6 mho. The values of YA, YB, YC respectively are

  14. A.
    2, 6, 6 mho
    B.
    2, 6, 0 mho
    C.
    2, 0, 6 mho
    D.
    2, 6, 8 mho

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  15. Vth = 0, if

  16. A.
    there is no independent source in circuit
    B.
    there is no dependent source in circuit
    C.
    voltage source of infinite magnitude
    D.
    none

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  17. The electrochemical equivalent of a material

  18. A.
    depends on its valency
    B.
    depends on its atomic weight
    C.
    depends on its valency and atomic weight
    D.
    depends on the degree of hardness of the material

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  19. For a two port network to be reciprocal

  20. A.
    Z11 = Z22
    B.
    y12 = y21
    C.
    h21 = - h12
    D.
    AD - BC = 0

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