Menu
Home / ECE / Network Analysis and Synthesis :: Section 4

ECE :: Network Analysis and Synthesis

Network Analysis and Synthesis - Section 1
Network Analysis and Synthesis - Section 2
Network Analysis and Synthesis - Section 3
Network Analysis and Synthesis - Section 4
Network Analysis and Synthesis - Section 5
Network Analysis and Synthesis - Section 6
Network Analysis and Synthesis - Section 7
Network Analysis and Synthesis - Section 8
Network Analysis and Synthesis - Section 9
Network Analysis and Synthesis - Section 10
Network Analysis and Synthesis - Section 11
Network Analysis and Synthesis - Section 12
Network Analysis and Synthesis - Section 13
Network Analysis and Synthesis - Section 14
Network Analysis and Synthesis - Section 15
Network Analysis and Synthesis - Section 16
Network Analysis and Synthesis - Section 17
Network Analysis and Synthesis - Section 18
Network Analysis and Synthesis - Section 19
Network Analysis and Synthesis - Section 20
Network Analysis and Synthesis - Section 21
Network Analysis and Synthesis - Section 22
Network Analysis and Synthesis - Section 23
Network Analysis and Synthesis - Section 24
Network Analysis and Synthesis - Section 25
Network Analysis and Synthesis - Section 26
Network Analysis and Synthesis - Section 27

  1. A magnetic circuit has an iron length of 20 cm and air gap length 0.1 cm. If μr = 200 then

    2. A.
    mmf for iron and air gap are equal
    B.
    mmf for iron is much less than that for air gap
    C.
    mmf for iron is much more than that for air gap
    D.
    either (a) or (c)

    View Answer

    Workspace

    Discuss Discuss in Forum

  2. A circuit is fed by two sources of the same frequency and values 100 ∠0° V and 20 ∠30°V. The current in a particular branch is 5 ∠19° A. If the magnitudes of the sources and changed to 200 ∠0° V and 40 ∠30° V, the current in that branch should be

    3. A.
    5 ∠19° A
    B.
    10 ∠19° A
    C.
    10 ∠38° A
    D.
    10 ∠9.5° A

    View Answer

    Workspace

    Discuss Discuss in Forum

  3. Two coils X and Y have self inductances of 5 mH and 10 mH and mutual inductance of 3 mH. If the current in coils X change at a steady rate of 100 A/s, the emf induced in coil Y is

    4. A.
    0.3 V
    B.
    0.5 V
    C.
    1 V
    D.
    1.5 V

    View Answer

    Workspace

    Discuss Discuss in Forum

  4. Two capacitors of 2 μF and 4 μF capacitance are connected in series across a 30 V dc battery. After the capacitors have been charged, the voltage across them will be

    5. A.
    15 V each
    B.
    10 V and 20 V
    C.
    20 V and 10 V
    D.
    30 V each

    View Answer

    Workspace

    Discuss Discuss in Forum

  5. In the circuit shown in the figure, the current supplied by the sinusoidal current source I is

    6. A.
    28 A
    B.
    4 A
    C.
    20 A
    D.
    not determinable from the data given

    View Answer

    Workspace

    Discuss Discuss in Forum

  6. The frame of an electric motor is earthed through three earthing plates resistances 30 Ω, 20 Ω and 10 Ω respectively. During fault the energy dissipated by three plates are W1, W2 and W3. Then

    7. A.
    W1 > W2 > W3
    B.
    W1 < W2 < W3
    C.
    W1 = W2 = W3
    D.
    W1 + W3 < W2

    View Answer

    Workspace

    Discuss Discuss in Forum

  7. If figure, power dissipated in 30Ω resistance will be maximum when value of R =

    8. A.
    30 Ω
    B.
    16 Ω
    C.
    9 Ω
    D.
    zero

    View Answer

    Workspace

    Discuss Discuss in Forum

  8. In the following non-planar graph no.of independent loop equations are

    9. A.
    8
    B.
    12
    C.
    7
    D.
    5

    View Answer

    Workspace

    Discuss Discuss in Forum

  9. Two voltages are 50 ∠0 V and 75 ∠ - 60° V. The sum of these voltages is

    10. A.
    109 ∠ - 60° V
    B.
    109 ∠ - 25° V
    C.
    109 ∠ - 36.6° V
    D.
    100 ∠ - 50.1° V

    View Answer

    Workspace

    Discuss Discuss in Forum

  10. An RLC series circuit is fed form 100 V ac supply. Inductance is 1 H and Q = 7.5. At resonance, the voltage across inductance is

    11. A.
    750 V
    B.
    100 V
    C.
    about 13.5 V
    D.
    1500 V

    View Answer

    Workspace

    Discuss Discuss in Forum

Java Programming Questions and Answers Interview Questions and Answers