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ECE :: Exam Questions Paper

  1. Find the voltage across 64 Ω resistor

  2. A.
    V
    B.
    V
    C.
    V
    D.
    V

  3. If f(Z) = c0 + c1z-1, then is given by

  4. A.
    2pc1
    B.
    2p (1 + c0)
    C.
    2pjc1
    D.
    2pj(1 + c0)

  5. The capacitors C1, C3, C4 and C5 have a capacitance of 4 μF each and the capacitor C2 has a capacitance of 10 μF. The effective capacitance (in μF) between the points X and Y will be

  6. A.
    4 μF
    B.
    6 μF
    C.
    3 μF
    D.
    8 μF

  7. (9)11 x (9)13 x(9)15 = (?)16

  8. A.
    933
    B.
    2D9
    C.
    339
    D.
    9AB

  9. The equivalent T circuit of this coupled network is shown in figure. Find the values of ZA, ZB and ZC.

  10. A.
    -j, 6j, 2j
    B.
    -j, 2j, 6j
    C.
    j, 2j, - 6j
    D.
    j, 2j, 6j

  11. Consider a parallel plate capacitor being charged. Identify the incorrect statements

  12. A.
    Energy stored in the capacitor does not enter it through the connecting wires but through the space around the wires and plates uf capacitor
    B.
    Rate at which energy flows into this volume is equal to the integration of the Poynting vector over the boundary of the volume between the plates.
    C.
    The Poynting vector points everywhere radially outward of the volume between the plates
    D.
    The Poynting vector points everywhere radially into the volume between the plates.

  13. Find equivalent resistance. Each resistance is l Ω

  14. A.
    5/12 Ω
    B.
    5/6 Ω
    C.
    6/5 Ω
    D.
    6/10 Ω

  15. The following circuit is implementation of:

    1. sum of full adder
    2. carry of half adder
    3. difference of full subtractor

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

  17. Find ZTH, VAB current through 10 Ω resistance


  18. Consider the following amplifier with negative feedback

    If the closed loop gain of above amplifier is + 100, the value of β will be

  19. A.
    -9 x 10-3
    B.
    9 x 10-3
    C.
    -11 x 10-3
    D.
    11 x 10-3