The angle of internal friction is maximum for angular-grained loose sand angular

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Question
The angle of internal friction is maximum for
Options
A. angular-grained loose sand
B. angular-grained dense sand
C. round-grained dense sand
D. round-grained loose sand
E. clays.

Correct Answer

angular-grained dense sand

Soil Mechanics and Foundation Engineering problems

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2. Which one of the following statements is true for Mohr-Coulomb envelope?
Options
A. Coulomb suggests that the relationship between shear strength and normal stress, is adequately represented by the straight line
B. The generalised Mohr theory suggests that, though the shear stress depends on the normal stress, the relation is not linear
C. Coulomb and Mohr suggest that a definite relationship exists among the principal stress and the angle of internal friction
D. For an ideal pure friction material, the straight line passes through the origin.
E. All the above.

3. Pick up the correct statement from the following:
Options
A. The dry density reduces by addition of water after attaining optimum moisture content
B. The line joining the peak of three moisture content graphs obtained by using three compactive energies, is called line of optimus
C. Well graded coarse grained soils can be compacted to a very high density as compared to fine grained soils
D. All the above. .

4. Tergazhi's theory of one dimensional consolidation assumes
Options
A. load is applied in one direction
B. coefficient of permeability is constant
C. excess pore water drains out only in the vertical direction
D. time lag in consolidation is due entirely to permeability
E. all the above.

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