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ECE :: Network Analysis and Synthesis

  1. A square current wave of magnitude 1 A is applied to an element for 5 seconds. The voltage across the element rises linearly from 0 to final value linearly. The element is

  2. A.
    resistance
    B.
    inductance
    C.
    capacitance
    D.
    R and C in series

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  3. A periodic voltage v(t) = 1 + 4 sin ωt + 2 cos ωt is applied across a 1 ohm resistance. The power dissipated is

  4. A.
    1 W
    B.
    11 W
    C.
    21 W
    D.
    24.5 W

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  5. A constant k high pass p section has a characteristic impedance of 300 Ω at f = ∞ . At f = fc, the characteristic impedance will be

  6. A.
    zero
    B.
    C.
    300 Ω
    D.
    more than 300 Ω

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  7. If A = 4∠7°, A2 is

  8. A.
    16∠14°
    B.
    16∠49°
    C.
    16∠7°
    D.
    16∠3.5

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  9. Zinc oxide is a non-linear resistance.

  10. A.
    True
    B.
    False

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  11. For the three coupled coils shown in figure, KVL equation is

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  13. Figure shows a dc circuit. The Thevenin's equivalent circuit at terminals a - b is

  14. A.
    B.
    C.
    D.
    not feasible

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  15. The dependent current source shown in given figure.

  16. A.
    delivers 80W
    B.
    absorbs 80W
    C.
    deliver 40W
    D.
    absorbs 40W

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  17. The current flowing through the resistance R in the circuit in the figure has the form 2 cos 4t, where R is

  18. A.
    (0.18 + j0.72)
    B.
    (0.46 + j1.90)
    C.
    - (0.18 + j1.90)
    D.
    (0.23 - 0.35 j)

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  19. Energy = voltage x charge.

  20. A.
    True
    B.
    False

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