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ECE :: Network Analysis and Synthesis

  1. The admittance parameter Y12 in the 2 port network in the figure

  2. A.
    -0.2 mho
    B.
    0.1 mho
    C.
    -0.05 mho
    D.
    0.05 mho

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  3. The differential equation for the current i(t) in the Ckt is

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  5. A 20 Ω resistor, a 1H inductor and 1μF capacitor are connected in parallel the combination is driven by a unit step current. Under the steady state, source current flows through

  6. A.
    inductor
    B.
    capacitor
    C.
    resistor
    D.
    all

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  7. A series resonant circuit has parameters 10 ω, 1 H and 0.1 F. It is excited by a voltage v = 100 sin ωt. At resonant frequency, the power dissipated in the circuit is

  8. A.
    1000 W
    B.
    707 W
    C.
    500 W
    D.
    414.14 W

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  9. Assertion (A): A tree of graph contains all the nodes of the graph.

    Reason (R): The number of links is always less than the number of tree branches.

  10. A.
    Both A and R are true and R is correct explanation of A
    B.
    Both A and R are true and R is not the correct explanation of A
    C.
    A is true but R is false
    D.
    A is false but R is true

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  11. Cells are connected in series to increase

  12. A.
    current-rating
    B.
    both voltage and current rating
    C.
    the life of cell
    D.
    voltage rating

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  13. The low pass filter characteristic shown in figure realizable.

  14. A.
    True
    B.
    False

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  15. Assertion (A): The s domain impedance of a series R-L circuit is R + sL irrespective of initial conditions.

    Reason (R): Complex frequency s = σ + jω.

  16. A.
    Both A and R are true and R is correct explanation of A
    B.
    Both A and R are true and R is not the correct explanation of A
    C.
    A is true but R is false
    D.
    A is false but R is true

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  17. If Va = 10 ∠0, Vb = 10 ∠ -120° and Vc = 10 ∠ -240°, then Va2 and Va0 are

  18. A.
    10 and 0 respectively
    B.
    0 and 10 respectively
    C.
    0 and 0
    D.
    10 and 10

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  19. A wire has a diameter d and resistance R. If the diameter is made 3d, the length and material remaining the same, the new value of resistance will be

  20. A.
    R/3
    B.
    3 R
    C.
    R/9
    D.
    9 R

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