Home / ECE / Network Analysis and Synthesis :: Section 25

ECE :: Network Analysis and Synthesis

  1. For an RC admittance function

  2. A.
    the lowest critical frequency is a zero
    B.
    the highest critical frequency is a pole
    C.
    the lowest critical frequency is zero and the highest critical frequency is a pole
    D.
    the lowest critical frequency is a pole

  3. Norton's equivalent circuit

  4. A.
    is same as Thevenin's circuit
    B.
    has no relation with Thevenin's circuit
    C.
    is dual of Thevenin's circuit
    D.
    is reciprocal of Thevenin's circuit

  5. The poles and zeros of a positive real functions are real or occur in conjugate pair.

  6. A.
    True
    B.
    False

  7. A coil is connected across a 200 V, 50 Hz supply and takes a current of 10 A. The loss in the coil is 1000 W. The impedance and resistance of the coil are

  8. A.
    10 Ω, 8 Ω
    B.
    15 Ω, 8 Ω
    C.
    20 Ω, 10 Ω
    D.
    30 Ω, 15 Ω

  9. In liquids charge carriers are electrons only.

  10. A.
    True
    B.
    False

  11. The current I flowing in the branch is

  12. A.
    -12 A
    B.
    12 A
    C.
    3 A
    D.
    -3 A

  13. In figure, the ratio V(s)/I(s) is

  14. A.
    R
    B.
    R + sL
    C.
    D.

  15. Consider the following: Energy storage capability of basic passive elements is due to the fact that

    1. resistance dissipates energy
    2. capacitance stores energy
    3. inductance dissipates energy
    Which of the above is/are correct?

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

  17. In an ac circuit that delivers constant power at varying p.f., the current is

  18. A.
    lowest when p.f. is leading
    B.
    lowest when p.f. is lagging
    C.
    lowest when p.f is unity
    D.
    the same for all power factors

  19. The parameter A of a two port network is equal to

  20. A.
    V2/V1 with I1 = 0
    B.
    V1/I2 with V2 = 0
    C.
    I1/I2 with V2 = 0
    D.
    V1/V2 with I2 = 0