Home / ECE / Network Analysis and Synthesis :: Section 10

ECE :: Network Analysis and Synthesis

  1. For the two port of figure, z11 is

  2. A.
    26/7 Ω
    B.
    10/3 Ω
    C.
    6 Ω
    D.
    2 Ω

  3. A certain network has two ideal voltages sources and a large number of ideal resistances. The power consumed in one of the resistances is 4 W when either of two sources is active and the other source is active and the other source is short circuited. When both sources is short circuited.When both sources are active, the power consumed in the same resistor would be

  4. A.
    zero or 16 W
    B.
    4 W or 8 W
    C.
    zero or 8 W
    D.
    8 W or 16 W

  5. A coil of resistance R and inductance L is connected in series with 5 μF capacitor. The source frequency is equal to resonance frequency and circuit current is 0.5 A. Another 5 F capacitor is connected in parallel with the above capacitor. The circuit current will be

  6. A.
    0.5 A
    B.
    more than 0.5 A
    C.
    less than 0.5 A
    D.
    0.5 A or less

  7. A capacitor having capacitance C is raised to voltage V. The energy stored will be

  8. A.
    CV2
    B.
    V2/C
    C.
    0.5 V2C
    D.
    0.5 C2V

  9. If the p and T circuits in figure are equivalent, then R1, R2, R3 respectively are

  10. A.
    9 Ω, 6 Ω, 6 Ω
    B.
    6 Ω, 6 Ω, 9 Ω
    C.
    9 Ω, 6 Ω, 9 Ω
    D.
    6 Ω, 9 Ω, 6 Ω

  11. In an R-L circuit, the impedance is 30 Ω at a frequency of 100 Hz. At 200 Hz, the impedance should be

  12. A.
    30 Ω or more
    B.
    60 Ω or more
    C.
    15 Ω or less
    D.
    more than 30 Ω but less than 60 Ω

  13. The electric energy required to raise the temperature of a given amount of water is 1000 kWh. If heat losses are 25%, the total heating energy required is __________ kWh.

  14. A.
    1500
    B.
    1250
    C.
    1333
    D.
    1000