Soil Mechanics Online Test – Paper 2

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Vikash chaudhary

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Total Questions: 30
Time Allotted: 30 minutes
Passing Score: 50%
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1 / 30

1. Flow path/flow channel is

a) The space between two adjacent flow lines

b) Direction of flow

c) The space between two equipotential lines

d) None of the above

2 / 30

2. The difference between total pressure and pore water pressure is known as

a) Major principal stress

b) Minor principal stress

c) Effective stress

d) None of the above

3 / 30

3. The top flow line in the case of seepage flow through an earthen dam has the shape of

a) Parabola

b) Ellipse

c) Hyperbola

d) None of the above

4 / 30

4. The shearing strength of a cohesionless soil depends upon:

a) Dry density

b) Rate of loading

c) Confining pressure

d) Nature of loading

5 / 30

5. The maximum pressure which a soil can carry without shear failure is called:

a) Safe bearing capacity

b) Net ultimate bearing capacity

c) Net bearing capacity

d) Ultimate bearing capacity

6 / 30

6. A soil sample contains a degree of saturation of 30%, find the percentage of air voids

a) 70%

b) 30%

c) 60%

d) 50%

7 / 30

7. Specific gravity of soil is

a) Same for clays and sands

b) Determined by hydrometer

c) Less than 2.0 for most soils

d) More than 2.5 for most soils

8 / 30

8. Cohesion is defined as:

a) Attraction of molecules of the same material

b) Attraction of molecules of different materials

c) Both of the above

d) None of the above

9 / 30

9. The tendency of dense sand to expand on the application of shearing load is known as

a) Thixotropy

b) Dilatancy

c) Remoulding less

d) Degree of sensitivity

10 / 30

10. The lateral earth pressure of the soil moves towards the retaining wall indicates

a) Active earth pressure

b) Passive earth pressure

c) Constant

d) All of the above

11 / 30

11. Moisture content of saturated soil equals:

a) 0%

b) 100%

c) 50%

d) 90%

12 / 30

12. The well foundation is normally used under:

a) Industrial buildings

b) Structures on river beds

c) Tall buildings

d) Offshore wells

13 / 30

13. * For a properly designed footing, the bearing stress must be less than the bearing capacity, which is the bearing stress that causes a ......... failure within the foundation soil.

a) Tensile

b) Expected

c) Unexpected

d) Shear

14 / 30

14. Piping in soils is due to

a) Low exit gradient

b) Erosion of subsoil by high velocity of seepage flow

c) Leakage of water through pipes laid in dams

d) Passage of water through well-connected pores in soil.

15 / 30

15. The water content of soils is defined as the ratio of

a) Volume of water to that of voids

b) Weight of water to the dry soil weight

c) Volume of water to the gross volume of soil

d) Weight of water to that of the soil

16 / 30

16. Electrical analogy method is used to

a) Find electrical conductivity of soil

b) Draw flow net

c) Find the depth to the water table

d) Find the water content in a soil

17 / 30

17. The bottom plug in well foundation is used:

a) To seal off the water

b) For stable resting

c) To transfer load from the steining to the soil

d) Create a working place in the well

18 / 30

18. Bearing capacity of soil is determined by:

a) Plate load test

b) Standard cone test

c) Both (a) and (b) of above

d) None of the above

19 / 30

19. The curve A, B, and C shown in fig below are respectively the stress-strain curves for stress of

a) Dense sand, clay, and loose sand

b) Dense sand, loose sand, and clay

c) Loose sand, dense sand, and clay

d) Clay, loose sand, and dense sand

20 / 30

20. A decrease in water content results in a reduction of the volume of a soil in

a) Liquid state

b) Plastic state

c) Semi-liquid state

d) All of the above

21 / 30

21. A foundation may be classified as shallow if:

a) Depth is less than 6 m

b) Depth is less than its width

c) Depth is less than 1 m

d) None of the above

22 / 30

22. Bearing capacity of soils depends on:

a) Physical characteristics of soil particles

b) Moisture content of soil

c) Both of the above

d) None of the above

23 / 30

23. The bearing capacity of soil depends on:

a) Grain size of the soil

b) Load intensity

c) On the load

d) Rate of loading

24 / 30

24. The change of moisture content of soils changes

a) Angle of repose

b) Cohesive strength

c) Amount of compaction required

d) Any of the above

25 / 30

25. The angle of internal friction for cohesive soils is equal to:

a) Zero

b) 30°

c) 45°

d) 15°

26 / 30

26. Three phase diagram of soil represents

a) Solids, pebbles, and clay

b) Dust, fine sand, and coarse sand

c) Solids, water, and air

d) Solid volume and mass

27 / 30

27. Consolidation theory was enunciated by

a) Rankine

b) Westergaard

c) Skempton

d) Terzaghi

28 / 30

28. Which of the following is not the purpose of a foundation?

a) To distribute the weight of the structure

b) To load the substratum evenly

c) To provide a level surface for building construction

d) To increase the safe bearing capacity of the soil

29 / 30

29. For a well-graded soil, the coefficient of curvature will be between:

a) 1 and 10

b) 2 and 8

c) 3 and 7

d) 1 and 3

30 / 30

30. The value of net allowable bearing pressure is:

a) Net safe bearing capacity

b) Net safe settlement pressure

c) Minimum of net safe bearing capacity and net safe settlement pressure

d) Gross safe bearing capacity

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Soil Mechanics Online Test – Paper 2

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