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ECE :: Network Analysis and Synthesis

  1. In the circuit shown in the figure the power dissipated in 30 Ω resistor will be maximum if the value of R is

  2. A.
    30 Ω
    B.
    10 Ω
    C.
    9 Ω
    D.
    zero

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  3. Which of the following polynomials is not Hurwitz?

  4. A.
    P1 = s8 + 2s6 + 4s4
    B.
    P2 = s6 - 3s4 + 2s2 + 1
    C.
    P3 = s4 + 3s3 + 3s2 + 2s + 1
    D.
    P4 = s7 + 2s6 2s4 + 4s3 + 8s2 + 8s + 4

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  5. In an RLC underdamped circuit

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  7. A network has 10 nodes and 17 branches. The number of different node pair are

  8. A.
    7
    B.
    9
    C.
    10
    D.
    45

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  9. In a series RC circuit Z = (R2 + ω2C2)0.5.

  10. A.
    True
    B.
    False

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  11. The time constant of the network shown in figure is

  12. A.
    RC
    B.
    3 RC
    C.
    D.

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  13. If V = 20 + j20, then loge(A) A is

  14. A.
    3.342 + j 45
    B.
    28.28 ∠45°
    C.
    400 ∠45°
    D.
    3.342 + j 0.785

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  15. In an ac network the sum of currents entering a node is 10 ∠45°. The sum of currents leaving the node is

  16. A.
    19.32 ∠45°
    B.
    15 ∠45°
    C.
    20 ∠45°
    D.
    zero

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  17. A parallel RLC network has R = 4Ω, L = 4H, C = 0.25F. Then at resonance Q =

  18. A.
    1
    B.
    10
    C.
    20
    D.
    40

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  19. A T network is inserted between source and R as shown in figure. The resistance seen by the source remains the same with or without T network when R is

  20. A.
    5 Ω
    B.
    10 Ω
    C.
    15 Ω
    D.
    20 Ω

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