Soil Mechanics and Foundation
In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on

all planes except horizontal and vertical planes
horizontal plane only
both horizontal and vertical planes
vertical plane only

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Soil Mechanics and Foundation
Effective stress on soil

Increases voids ratio and decreases permeability
Decreases both voids ratio and permeability
Decreases voids ratio and increases permeability
Increases both voids ratio and permeability

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Soil Mechanics and Foundation
The effect of cohesion on a soil is to

increase both the active earth pressure intensity and passive earth pressure intensity
increase the active earth pressure in-tensity but to reduce the passive earth pressure intensity [GATE 99]
reduce the active earth pressure in-tensity but to increase the passive earth pressure intensity
reduce both the active earth pressure intensity and passive earth pressure intensity

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