Soil Mechanics – Multiple Choice Questions (MCQs)

1. 121. What is 'drained shear strength' (c', φ')?

   • A. The shear strength of a soil measured under conditions where full drainage of pore water is allowed
   • B. Undrained shear strength
   • C. Cohesion
   • D. Angle of internal friction

2. 122. When is 'undrained analysis' typically used?

   • A. For short-term stability analysis of fine-grained soils
   • B. For long-term stability analysis
   • C. For granular soils
   • D. For saturated soils only

3. 123. When is 'drained analysis' typically used?

   • A. For long-term stability analysis of all soils and short-term analysis of granular soils
   • B. For short-term stability analysis of fine-grained soils
   • C. For saturated soils only
   • D. For unsaturated soils only

4. 124. What is 'geotextile filter'?

   • A. A permeable fabric used to allow water to pass while retaining soil particles
   • B. An impermeable barrier
   • C. A reinforcement layer
   • D. A drainage layer

5. 125. What is 'well point system' for dewatering?

   • A. A system of closely spaced small-diameter wells connected to a common header and pump
   • B. used for lowering groundwater table in shallow excavations
   • C. Deep wells
   • D. Horizontal drains

6. 126. What is 'e-log p curve' in consolidation?

   • A. A plot of void ratio (e) versus the logarithm of effective pressure (log p)
   • B. used to determine consolidation parameters
   • C. A plot of settlement vs time
   • D. A plot of shear strength vs normal stress