Home / ECE / Exam Questions Paper :: Section 7

ECE :: Exam Questions Paper

  1. The surface charge density on a conductor is 1.55 x 10-9C/m2. The conductor is immersed in water with ε = 78ε0.The electric field will be __________ .

  2. A.
    3 V/m
    B.
    1.55 V/m
    C.
    2 V/m
    D.
    2.25 V/m

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. In the given figure
    .
    The damping coefficient for the given circuit is __________ .

  4. A.
    1/2
    B.
    1/4
    C.
    2
    D.
    1

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. In a infinite ladder circuit as shown above each resistance of r Ω then find RAB

  6. A.
    B.
    C.
    1.61r
    D.
    none of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. A 16 bit type ADC uses 1 MHz clock its maximum conversion time is __________ .

  8. A.
    16 μs
    B.
    15 ms
    C.
    6.5 ms
    D.
    66 ms

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. A 300 MHz plane EM wave is propagating in free space. The wave is incident normally on an infinite copper slap. The antenuation constant for the wave is (σcopper = 5.8 x 107 mho/ m)

  10. A.
    262 x 103
    B.
    254 x 103
    C.
    352 x 103
    D.
    354 x 103

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. Transmitted voltage level is:

  12. A.
    11
    B.
    7.8
    C.
    7.348 V
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Which of the following is neither power nor energy signal?

  14. A.
    sin 2t + cos 3t
    B.
    C.
    ramp
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. A periodic voltage has following values for equal time intervals changing suddenly from one value to next : 0, 5, 10, 20, 50, 60, 50, 20, 10, 5, 0, - 5, - 10 etc.
    What would be the RMS value of a sine wave having the same peak value as that of the above mentioned periodic wave?

  16. A.
    42.2 V
    B.
    19.098 V
    C.
    38.2 V
    D.
    none of these

    View Answer

    Workspace

    Discuss Discuss in Forum