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ECE :: Network Analysis and Synthesis

  1. A capacitor does not allow sudden changes

  2. A.
    in currents
    B.
    in voltage
    C.
    in both current and voltage
    D.
    neither of two

  3. Assertion (A): Thevenin's theorem helps us to find current in a branch of a network for different values of impedances of that branch.

    Reason (R): Thevenin's equivalent circuit replaces a network by a voltage source in series with impedance.

  4. 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

  5. If a 'live' conductor of a public supply touches earth metal

  6. A.
    supply voltage will increase
    B.
    supply voltage will decrease
    C.
    no current will flow
    D.
    current will flow to earth

  7. If a fuse is higher than required current rating is employed in a circuit, it will

  8. A.
    blow more frequently since it carries more current
    B.
    afford better protection to the circuit
    C.
    seriously overload the circuit
    D.
    lead to larger maintenance cost

  9. A series circuit has fixed resistance and variable reactance. The impedance locus will be a straight line parallel to Y-axis.

  10. A.
    True
    B.
    False

  11. The dual of a loop is

  12. A.
    twig
    B.
    node pan
    C.
    mesh
    D.
    tree

  13. If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be

  14. A.
    a voltage source
    B.
    a current source
    C.
    both of the above
    D.
    none of the above

  15. Consider the following statements :

    1. Tellegen's theorem is applicable to any lumped networks.
    2. The reciprocity theorem is applicable to linear bilateral networks.
    3. Thevenin's theorem is applicable to two- terminal linear active networks.
    4. Norton's theorem is applicable to two-terminal linear active networks.
    Which of these statement are correct?

  16. A.
    1, 2, and 3
    B.
    1, 2 and 4
    C.
    1, 2, 3 and 4
    D.
    3 and 4

  17. An RLC series circuit is excited by a step voltage E. The units of roots of characteristic equation are

  18. A.
    seconds
    B.
    1/seconds
    C.
    tesla
    D.
    henry

  19. An excitation is applied to a system at t = T, and its response is zero for -∞ < t < T, such a system is

  20. A.
    non-causal system
    B.
    Stable system
    C.
    causal system
    D.
    unstable system