Civil Soil Mechanics and Foundation Part-2

Test Preparation on Civil Soil Mechanics and Foundation Part-2

1.

A plane inclined at an angle j to the horizontal at which the soil is expected to stay in theabsence of any lateral support, is known as

1Natural slope line
2Repose line
3The j line
4All the above

2.

Rise of water table above the ground surface causes

1Equal increase in pore water pressure and total stress
2Equal decrease in pore water pressure and total stress
3Increase in pore water pressure but decrease in total stress
4Decrease in pore water pressure but increase in total stress

3.

Terzaghi's theory of one dimensional consolidation assumes

1Soil is homogeneous and fully saturated
2Water and soil particles are incompressible
3Deformation of the soil, is entirely due to change in volume
4All the above

4.

If the material of the base of the Casagrande liquid limit device on which the cup containing soilpaste drops is softer than the standard hard rubber, then

1The liquid limit of soil always increases
2The liquid limit of soil always decreases
3The liquid limit of soil may increase
4The liquid limit of soil may decrease

5.

A triaxial shear test is preferred to direct shear test, because

1It can be performed under all three drainage conditions with complete control
2Precise measurement of pore pressure and change in volume during test, is not possible
3Stress distribution on the failure plane, is non uniform
4None of these

6.

The average coefficient of permeability of natural deposits

1Parallel to stratification is always greater than that perpendicular to stratification
2Parallel to stratification is always less than that perpendicular to stratification
3Is always same in both directions
4Parallel to stratification may or may not be greater than that perpendicular to stratification

7.

Pick up the correct statement from the following:

1The dry density reduces by addition of water after attaining optimum moisture content
2The line joining the peak of three moisture content graphs obtained by using threecompactive energies, is called line of optimus
3Well graded coarse grained soils can be compacted to a very high density as compared tofine grained soils
4All the above

8.

The shear strength of a soil

1Is directly proportional to the angle of internal friction of the soil
2Is inversely proportional to the angle of internal friction of the soil
3Decreases with increase in normal stress
4Decreases with decrease in normal stress

9.

Pick up the correct statement from the following:

1The object of classifying soils is to arrange them into groups according to their propertiesand behaviour
2A soil classification system is meant to provide an accepted and systematic method ofdescribing the various types of soils eliminating personal factors
3The first category of soil classification is based on grain size of the soil
4All the above

10.

The major principal stress in an element of cohesion-less soil within the backfill of a retaining wallis

1Vertical if the soil is in an active state of plastic equilibrium
2Vertical if the soil is in a passive state of plastic equilibrium
3Inclined at 45
4None of the above

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