Top 250+ Solved Geotechnical Engineering MCQ Questions Answer
Q. If Nf, Nd and H are total number flow channels, total number of potential drops and total hydraulic head differences respectively, the discharge q through the complete flow is given by (where K is a constant)
a. q = (Nf/Nd)
b. q = KH (Nd/(Nf)
c. q = KH (Nf/Nd)
d. q = KH Nf/Nd)
Q. A failure wedge develops if a retaining wall
a. Moves away from the backfill
b. Moves towards the backfill
c. Sinks downwards
d. Stresses equally by vertical and horizontal forces
Q. The admixture of coarser particles like sand or silt to clay causes
a. Decrease in liquid limit and increase in plasticity index
b. Decrease in liquid limit and no change in plasticity index
c. Decrease in both liquid limit and plasticity index
d. Increase in both liquid limit and plasticity index
Q. The shearing strength of a cohesion-less soil depends upon
a. Dry density
b. Rate of loading
c. Confining pressure
d. Nature of loading
Q. The water content of soil is defined as the ratio of
a. Volume of water to volume of given soil
b. Volume of water to volume of voids in soil
c. Weight of water to weight of air in voids
d. Weight of water to weight of solids of given mass of soil
Q. A critical hydraulic gradient may occur when
a. Flow is in upward direction
b. Seepage pressure is in upward direction
c. Effective pressure is zero
d. All the above
Q. Which of the following methods is best suited for determination of permeability of coarsegrained soils?
a. Constant head method
b. Falling head method
c. Both the above
d. None of the above
Q. Back fill with a sloping surface exerts a total active pressure Pa on the wall of height H and acts at
a. H/4 above the base parallel to base
b. H/2 above the base parallel to base
c. H/3 above the base parallel to base
d. H/5 above the base parallel to base
Q. The slope of isochrone at any point at a given time indicates the rate of change of
a. Effective stress with time
b. Effective stress with depth
c. Pore water pressure with depth
d. Pore water pressure with time
Q. The ratio of the volume of water present in a given soil mass to the total volume of itsvoids, is known
a. Porosity
b. Void ratio
c. Percentage voids
d. Degree of saturation
Q. A soil has bulk density 2.30 g/cm3 and water content 15 per cent, the dry density of the sample, is
a. 1.0 g/cm2
b. 1.5 g/cm3
c. 2.0 g/cm3
d. 2.5 g/cm3
Q. Coefficient of consolidation for clays normally
a. Decreases with increase in liquid limit
b. Increases with increase in liquid limit
c. First increases and then decreases with increase in liquid limit
d. Remains constant at all liquid limits