The seepage force in a soil, is perpendicular to the equipotential lines proport

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Question
The seepage force in a soil, is
Options
A. perpendicular to the equipotential lines
B. proportional to the exit graident
C. proportional to the head loss
D. all the above.

Correct Answer

all the above.

Soil Mechanics and Foundation Engineering problems

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2. The ratio of the weight of given volume of soil solids to the weight of an equal volume of distilled water at the given temperature, is known
Options
A. porosity
B. specific gravity
C. void ratio
D. water content.

4. Pick up the correct statement from the following:
Options
A. When water table is above the base of a footing, the dry weight m should be used for soil below water table
B. When water table is located somewhat below the base of a footing, the elastic wedge is partly of moist soil and partly of submerged soil, and a suitable reduction factor is used
C. When water table is just at the base of the footing, no reduction factor is used
D. None of these.

6. A flow line makes angles ?₁ and ?₂ with the normal to the interface of the soils having permeabilities k₁, k₂ before and after deflection. According to the law of deflection of the flow lines at the interface of the dissimilar soils
Options
A.
B.
C.
D.

9. The liquidity index is defined as a ratio expressed as percentage of
Options
A. plastic limit minus the natural water content, to its plasticity index
B. natural water content minus its plastic limit to its plasticity index
C. natural water content plus its plastic limit to its plasticity index
D. liquid limit minus the natural water content to the plasticity index.

10. The active earth pressure of a soil is proportional to (where ? is the angle of friction of the soil)
Options
A. tan (45� - ?)
B. tan² (45� + ?/2)
C. tan² (45� - ?/2)
D. tan (45� + ?)

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