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ECE :: Network Analysis and Synthesis

  1. A dielectric should have poor heat conductivity.

  2. A.
    True
    B.
    False

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  3. The ability of a radio receiver to discriminate between different input signals and to accept only one definite signal is called its

  4. A.
    sensitivity
    B.
    attenuation
    C.
    selectivity
    D.
    modulation

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  5. Assertion (A): A graph can have many trees.

    Reason (R): The number of tree branches is equal to number of nodes.

  6. 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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  7. Electric shock is

  8. A.
    always fatal
    B.
    never fatal
    C.
    sometimes fatal
    D.
    always disfiguring

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  9. The first critical frequency nearest the origin of the complex frequency plane for an RL driving point impedance will be

  10. A.
    a zero in left half plane
    B.
    a zero in right half plane
    C.
    a pole in left half plane
    D.
    a pole or zero in left half plane

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  11. If Ia, Ib, Ic are line currents and Ia0 is the zero sequences component of Ia then

  12. A.
    Ia0 = Ia
    B.
    Ia0 = Ia + Ib + Ic
    C.
    D.

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  13. The polynomial P (s) = (s - 1) (s2 + 1) (s + 2) (s + 3) is

  14. A.
    Hurwitz but not strictly Hurwitz
    B.
    not Hurwitz
    C.
    strictly Hurwitz
    D.
    anti/Hurwitz

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  15. If a resistance R of 1 Ω is connected between A and B in figure, current flowing through R is

  16. A.
    1 A
    B.
    0.5 A
    C.
    0.25 A
    D.
    0.125 A

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  17. Assertion (A): In drawing an electric circuit analogous to a mechanical circuit, spring is replaced by capacitance.

    Reason (R): The behaviour of a spring and capacitor are similar.

  18. 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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  19. Two coils having equal resistance but different inductances are connected in series. The time constant of the series combination is

  20. A.
    average of the time constants of individual coils
    B.
    sum of the time constants of the individual coils
    C.
    geometric mean of the time constants of individual coils
    D.
    product of the time constants of the individual coils

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