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ECE :: Network Analysis and Synthesis

  1. A sinusoidal voltage is written as v = Im (R2 + XC2)0.5 sin 314 t. Its peak value and frequency are

  2. A.
    Im and 50
    B.
    Im (R2 + X2C)0.5 and 50
    C.
    0.707 Im (R2 + X2C)0.5 and 50
    D.
    2 Im (R2 + X2C)0.5 and 50

  3. If A = 10 + j then logeA is

  4. A.
    14.14 ∠45°
    B.
    200 ∠45°
    C.
    2.65 + j45°
    D.
    2.65 + j0.785

  5. Which synthesis procedure requires the use of mutual inductance?

  6. A.
    Foster's synthesis
    B.
    Cauer synthesis
    C.
    Bott-Duffin synthesis
    D.
    Brune's synthesis

  7. KVL equation for the circuit of figure is


  8. In figure the rms value is

  9. A.
    5
    B.
    2.5
    C.
    2.5
    D.
    50

  10. A series RL circuit is excited by a voltage v(t) = Vm sin (ωt + Φ). The transient current will be zero if

  11. A.
    Φ = 0
    B.
    ω = 0
    C.
    Φ = tan-1 (ωL/R)
    D.
    ω - tan-1 (ωL/R) = p/2

  12. Consider the following from the point of view of possible realization as driving point impedances using passive elements

    Among these

  13. A.
    1, 2, 4 are realisable
    B.
    1, 2, 3 are realisable
    C.
    3, 4 are realisable
    D.
    none is realisable

  14. The frequency at which maximum voltage occurs across the inductance in R-L-C series circuit is


  15. A series circuit has R = 5 Ω and C = 10 μF. At t = 0 it is switched on to a 10 V dc battery. The maximum current in the circuit is

  16. A.
    2 A
    B.
    1 A
    C.
    106A
    D.
    10 μA

  17. In figure, the value of R should be

  18. A.
    5 kΩ
    B.
    50 kΩ
    C.
    20 kΩ
    D.
    10 kΩ