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ECE :: Network Analysis and Synthesis

  1. If F1(s) and F2(s) are two positive real functions, then the function which is always positive real is

  2. A.
    F1(s) F2(s)
    B.
    F1(s) - F2(s)
    C.
    D.
    F1(s)/F2(s)

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  3. The condition AD - BC = 1 for two port network implies that the network is a

  4. A.
    reciprocal
    B.
    lumped element network
    C.
    lossless network
    D.
    unilateral element network

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  5. The units for electrochemical equivalent are

  6. A.
    grams
    B.
    grams per coulomb
    C.
    gram-coulomb
    D.
    grams per ampere

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  7. Two coupled coils A and B are connected in series. The total inductances in series aiding and series opposing connections are LA and LB. The mutual inductance M is

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  9. The impedance 3.2 - j 12 in polar form is given as

  10. A.
    6.4 ∠ - 75°
    B.
    8.4 ∠ - 75°
    C.
    10.4 ∠ - 75°
    D.
    12.4 ∠ - 75°

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  11. The differential equation for the current i(t) in the circuit of the figure is

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  13. For an R-C impedance function, the residues at all poles are

  14. A.
    real
    B.
    imaginary
    C.
    real and positive
    D.
    positive

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  15. In the circuit shown in figure, maximum power will be transferred when

  16. A.
    ZL = 13 - j 9
    B.
    ZL = 13 + j 9
    C.
    ZL = 9 - j 13
    D.
    ZL = 9 + j 13

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  17. In the analogy between electric and magnetic circuits, flux is analogous to

  18. A.
    current
    B.
    voltage
    C.
    rate of charge of current
    D.
    rate of charge of voltage

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  19. A two port network is reciprocal if and only if

  20. A.
    Z11 = Z22
    B.
    BC - AD = - 1
    C.
    Y12 = Y21
    D.
    h12 = h21

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