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ECE :: Network Analysis and Synthesis

  1. An m derived and constant k filter section connected in cascade give

  2. A.
    proper impedance matching
    B.
    proper phase shift characteristic
    C.
    proper attenuation characteristic
    D.
    all of the above

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  3. At resonance, the parallel circuit constituted by an iron-cored coil and a capacitor behaves like

  4. A.
    open circuit
    B.
    short circuit
    C.
    pure resistor of value R
    D.
    pure resistor of value much higher than R

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  5. Carbon resistances are used in very high values.

  6. A.
    True
    B.
    False

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  7. In a linear bilateral passive element two port which of the following holds for z parameters?

  8. A.
    z11 = z22
    B.
    z12 z22 = z11 z22
    C.
    z11 z12 = z22 z21
    D.
    z12 = z21

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  9. During discharging a capacitor through a resistance, voltages across R and C are equal in magnitude.

  10. A.
    True
    B.
    False

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  11. In an RLC series circuit having finite values of RLC, the phase difference between applied voltage and current is

  12. A.
    always 0°
    B.
    between 0 and 180°
    C.
    between 0 and 90°
    D.
    always 90°

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  13. In ZRC (s) = 0 at s =∞, the last element in second Foster realization will be

  14. A.
    R
    B.
    C
    C.
    R and C in series
    D.
    R and C in parallel

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  15. Assertion (A): The dual of a circuit can be drawn by window-dot method.

    Reason (R): The principle of duality is of great help in circuit analysis.

  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. A short-circuit is that which is

  18. A.
    used short pieces of wire
    B.
    goes only a short distance
    C.
    is used for dimming light
    D.
    offer very low resistance path for current to flow

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  19. In the voltage equation v = 500 e-5t sin (2p 50t), the frequency is

  20. A.
    2p x 50 Hz
    B.
    50 Hz
    C.
    D.
    (2p x 50 Hz) 5 Hz

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