The hydraulic gradient (i), used in capillary-permeability test is ____________
(a) h0+hc/x
(b) h0/x
(c) h0+hc
(d) hc/x
I have been asked this question in an interview for job.
Origin of the question is The Capillarity-Permeability Test topic in portion Permeability of Geotechnical Engineering I