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ECE :: Network Analysis and Synthesis

  1. Given , and f(t)t → ∞ is . The value of k is

  2. A.
    3/16
    B.
    16/3
    C.
    3
    D.
    1/4

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  3. In a one port network . It is excited by a unit step current. The initial and final values of voltage across the network impedance are

  4. A.
    B.
    C.
    D.
    1 and 0

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  5. In the circuit of figure, the current through battery E2 is

  6. A.
    1 A discharging
    B.
    1 A charging
    C.
    9 A discharging
    D.
    9 A charging

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  7. A source of angular frequency 1 rad sec has a source impedance consisting of 1 Ω resistance in series with 1 H inductance. The load that will obtained the maximum power transfer is

  8. A.
    1 Ω resistance
    B.
    1 Ω resistance in parallel with 1 H inductance
    C.
    1 Ω resistance in series with 1 F capacitor
    D.
    1 Ω resistance in parallel with 1 F capacitor

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  9. When tracing through a resistance we always get a voltage drop.

  10. A.
    True
    B.
    False

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  11. A copper coil has a resistance of 40 ohm at 20°C. At 100°C the resistance is likely to be

  12. A.
    44 Ω
    B.
    54 Ω
    C.
    84 Ω
    D.
    104 Ω

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  13. Assertion (A): In a parallel circuit with three branches having R, L and C respectively and fed by a step current I, the current through inductance is always zero.

    Reason (R): The time constant of R-L circuit is L/R.

  14. 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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  15. When a source is delivering maximum power to a load through a network, the ratio of power delivered to the source power

  16. A.
    may be 50% or less than 50%
    B.
    is 50%
    C.
    may be 50% or more than 50%
    D.
    may be 50% or more less than 50%

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