Theory Practice Soil Mechanics and Foundation Engineering - Set 17 - ObjectiveBooks

# Practice Test: Question Set - 17

1. Compressibility of sandy soils is
(A) Almost equal to that of clayey soils
(B) Much greater than that of clayey soils
(C) Much less than that of clayey soils
(D) None of the above

2. Depending upon the properties of a material, the failure envelope may
(A) Be either straight or curved
(B) Pass through the origin of stress
(C) Intersect the shear stress axis
(D) All the above

3. The maximum pressure which a soil can carry without shear failure, is called
(A) Safe bearing capacity
(B) Net safe bearing capacity
(C) Net ultimate bearing capacity
(D) Ultimate bearing capacity

4. In a deposit of normally consolidated clay
(A) Effective stress increases with depth but water content of soil and undrained strength decrease with depth
(B) Effective stress and water content increase with depth but undrained strength decreases with depth
(C) Effective stress and undrained strength increase with depth but water content decreases with depth
(D) Effective stress, water content and undrained strength decrease with depth

5. A moist soil sample weighing 108 g has a volume of 60 cc. If water content is 25% and value of G = 2.52, the void ratio is
(A) 0.55
(B) 0.65
(C) 0.75
(D) 0.80

6. For slopes of limited extent the surface of slippage, is usually along
(A) A parabolic arc
(B) An elliptical arc
(C) A straight line
(D) A circular arc

7. A retaining wall 6m high supports a backfill with a surcharge angle of 10°. The back of the wall is inclined to the vertical at a positive batter angle of 5°. If the angle of wall friction is 7°, then the resultant active earth pressure will act at a distance of 2 m above the base and inclined to the horizontal at an angle of
(A) 7°
(B) 10°
(C) 12°
(D) 17°

8. The minimum water content at which the soil just begins to crumble when rolled into threads 3 mm in diameter, is known
(A) Liquid limit
(B) Plastic limit
(C) Shrinkage limit
(D) Permeability limit

9. Valid range for S, the degree of saturation of soil in percentage is
(A) S > 0
(B) S < 0
(C) 0
(D) 0 < S < 100

10. The minimum water content at which the soil retains its liquid state and also possesses a small shearing strength against flowing, is known
(A) Liquid limit
(B) Plastic limit
(C) Shrinkage limit
(D) Permeability limit

11. 'Drift' is the material picked up, mixed, disintegrated, transported and redeposited by
(A) Wind
(B) Gravitational force
(C) Glaciated water
(D) All the above

12. The ratio of volume of voids to the total volume of soil mass is called
(A) Air content
(B) Porosity
(C) Percentage air voids
(D) Voids ratio

13. The ratio of the volume of voids to the volume of soil solids in a given soil mass, is known
(A) Porosity
(B) Specific gravity
(C) Void ratio
(D) Water content

14. The specific yield of soil depends upon
(A) Compaction of stratum
(B) Distribution of pores
(C) Shape and size of particles
(D) All the above

15. The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in
(A) The principle of test
(B) The method of taking observations
(C) The method of preparation of soil suspension
(D) All of the above

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