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

Related Mcqs:

1. 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

2. 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°

3. During the first stage of triaxial test when the cell pressure is increased from 0.10 N/mm2 to 0.26 N/mm2, the pore water pressure increases from 0.07 N/mm2 to 0.15 “N/mm2. Skempton’s pore pressure parameter B is___________________?

   A. 0.5
   B. -0.5
   C. 2.0
   D. – 2.0

4. If a cohesive soil specimen is subjected to a vertical compressive load, the inclination of the cracks to the horizontal is__________________?

   A. 90°
   B. 45°
   C. 22.5°
   D. 0°

5. Shear strength of a soil is a unique function of__________________?

   A. effective stress only
   B. total stress only
   C. both effective stress and total stress
   D. none of the above

6. Direct measurement of permeability of the specimen at any stage of loading can be made_______________?

   A. only in fixed ring type consolido-meter
   B. only in floating ring type consolido-meter
   C. both (A) and (B)
   D. none of the above

7. 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

8. Highway Research Board (HRB) classification of soils is based on__________________?

   A. particle size composition
   B. plasticity characteristics
   C. both particle size composition and plasticity characteristics
   D. none of the above

9. 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

10. 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