Effective stress on soil_____________?

Related Mcqs:

1. A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m2 to 200 kN/ m2. If the effective stress is further increased from 200 kN/ m2 to 400 kN/ m2, then the settlement of the same clay is__________________?

   A. 10 mm
   B. 20 mm
   C. 40 mm
   D. none of the above

2. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on__________________?

   A. horizontal plane only
   B. vertical plane only
   C. both horizontal and vertical planes
   D. all planes except horizontal and vertical planes

3. Effective stress is______________?

   A. the stress at particles contact
   B. a physical parameter that can be measured
   C. important because it is a function of engineering properties of soil
   D. all of the above

4. The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively__________________?

   A. zero and zero
   B. 0.5 kg/cm2 and zero
   C. 0.5 kg/cm2 and 0.5 kg/cm2
   D. 1.0 kg/cm2 and 0.5 kg/cm2

5. For a loose sand sample and a dense sand sample consolidated to the same effective stress_____________?

   A. ultimate strength is same and also peak strength is same
   B. ultimate strength is different but peak strength is same
   C. ultimate strength is same but peak strength of dense sand is greater than that of loose sand
   D. ultimate strength is same but peak

6. Total number of stress components at a point within a soil mass loaded at its boundary is______________?

   A. 3
   B. 6
   C. 9
   D. 16

7. A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively______________________?

   A. 0.5 N/mm2 and 30°
   B. 0.05 N/mm2 and 0°
   C. 0.2 N/mm2 and 0°
   D. 0.05 N/mm2 and 45°

8. In a triaxial compression test when drainage is allowed during the first stage (i. e. application of cell pressure) only and not during the second stage (i.e. application of deviator stress at constant cell pressure), the test is known as__________________?

   A. consolidated drained test
   B. consolidated undrained test
   C. unconsolidated drained test
   D. unconsolidated undrained test

9. The major principal stress in an element of cohesionless soil within the backfill of a retaining wall is________________?

   A. vertical if the soil is in an active state of plastic equilibrium
   B. vertical if the soil is in a passive state of plastic equilibrium
   C. inclined at 45° to the vertical plane
   D. none of the above

10. If the shearing stress is zero on two planes, then the angle between the two planes is________________?

    A. 45°
    B. 90°
    C. 135°
    D. 225°