The method in which 4 electrons are driven in the ground at equal distance apart and in a straight line upto a depth which the ground distance is to be measured.(a) Seismic refraction method(b) Geophysical method(c) Electrical resistivity method(d) Current extraction methodThe question was asked during an internship interview.Query is from Site Exploration Methods topic in section Site Investigation and Ground Techniques of Construction & Building Materials

The method in which 4 electrons are driven in the ground at equal dist

1.	The method in which 4 electrons are driven in the ground at equal distance apart and in a straight line upto a depth which the ground distance is to be measured.(a) Seismic refraction method(b) Geophysical method(c) Electrical resistivity method(d) Current extraction methodThe question was asked during an internship interview.Query is from Site Exploration Methods topic in section Site Investigation and Ground Techniques of Construction & Building Materials
Answer» CORRECT option is (c) Electrical resistivity method Explanation: This method is based on the principle that each soil has different electrical resistivity, DEPENDING upon its water content, compaction and COMPOSITION. For instance, the SATURATED soil will have lower electrical resistivity as compared to the loose dry GRAVEL or solid rock.

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