Effective stress increases with depth but water content of soil and undrained strength decrease with depth
Effective stress and water content increase with depth but undrained strength decreases with depth
Effective stress and undrained strength increase with depth but water content decreases with depth
Effective stress, water content and undrained strength decrease with depth
Correct answer: (C) Effective stress and undrained strength increase with depth but water content decreases with depth
142. In a flow net
Flow lines and equipotential lines cross each other at right angles
Fields are rectangles whose length is twice the breadth
Smaller the dimensions of the field, smaller will be the hydraulic gradient and velocity of flow through it
For homogeneous soil, the curves are smooth and circular
Correct answer: (A) Flow lines and equipotential lines cross each other at right angles
143. In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The liquid limit of the soil, is
0.35
0.5
0.65
None of these
Correct answer: (C) 0.65
144. In a purely cohesive soil, the critical centre lies at the intersection of
Perpendicular bisector of slope and the locus of the centre
Perpendicular drawn at 1/3rd slope from toe and the locus of the centre
Perpendicular drawn at 2/3rd slope from toe and the locus of the centre
Directional angles
Correct answer: (D) Directional angles
145. 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
Consolidated drained test
Consolidated undrained test
Unconsolidated drained test
Unconsolidated undrained test
Correct answer: (B) Consolidated undrained test
146. In active state of plastic equilibrium in a non cohesive soil with horizontal ground surface
Major principal stress is horizontal
Minor principal stress is vertical
Major principal stress is vertical
Minor and major principal stresses are equally inclined to horizontal
Correct answer: (C) Major principal stress is vertical
147. In hydrometer analysis for a soil mass
Both meniscus correction and dispersing agent correction are additive
Both meniscus correction and dispersing agent correction are subtractive
Meniscus correction is additive and dispersing agent correction is subtractive
Meniscus correction is subtractive and dispersing agent correction is additive
Correct answer: (C) Meniscus correction is additive and dispersing agent correction is subtractive
148. In non-cohesive soil in passive state of plastic equilibrium
Major principal stress is horizontal
Minor principal stress is vertical
Major principal stress is vertical
Minor and major principal stresses are equally inclined to the horizontal
Correct answer: (B) Minor principal stress is vertical
149. In the plate loading test for determining the bearing capacity of soil, the size of square bearing plate should be
Less than 300 mm
Between 300 mm and 750 mm
Between 750 mm and 1 m
Greater than 1 m
Correct answer: (B) Between 300 mm and 750 mm
150. In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on
Horizontal plane only
Vertical plane only
Both horizontal and vertical planes
All planes except horizontal and vertical planes
Correct answer: (D) All planes except horizontal and vertical planes