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Six electrode configuration, termed axial parallel, perpendicular, Radial, Azimuthal and equatorial spreads are associated with which of the following array.

  • A.Wenner array
  • B.Schlumberger array
  • C.Dipole array
  • D.Lee-Partitioning

Answer: C

The six spreads belong to the dipole array.

In dipole electrode configurations the current electrodes form one closely spaced pair and the potential electrodes another, separated by a much larger distance. Depending on how the potential dipole is placed and oriented relative to the current dipole, the arrangements are named axial (or polar), parallel, perpendicular, radial, azimuthal and equatorial spreads.

The Wenner and Schlumberger arrays are collinear four-electrode arrays with fixed geometric rules and no such family of orientations. The Lee partitioning method is a modification of the Wenner array with an extra central electrode.

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