Soil Mechanics And Foundation - Study Mode
[#71] The effect of cohesion on a soil is to
Correct Answer
(C) reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity
[#72] The hydrometer method of sedimentation analysis differs from the pipette analysis mainly in
Correct Answer
(B) the method of taking observations
[#73] Rise of water table above the ground surface causes
Correct Answer
(A) Equal increase in pore water pressure and total stress
[#74] Shear strength of a soil is a unique function of
Correct Answer
(C) both effective stress and total stress
Explanation
Solution: In soil mechanics, the shear strength of a soil is a unique function of both effective stress and total stress . The shear strength of soil depends on both the effective stress and the total stress acting on the soil mass. Effective stress refers to the stress carried by the soil grains themselves, while total stress includes the stress carried by both the soil grains and the pore water. Therefore, the correct option is both effective stress and total stress .
[#75] If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is
Correct Answer
(A) 40%