Soil Mechanics and Foundation
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

unconsolidated undrained test
unconsolidated drained test
consolidated undrained test
consolidated drained test

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Soil Mechanics and Foundation
Effective stress on soil

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

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Soil Mechanics and Foundation
The ultimate consolidation settlement of a structure resting on a soil

Increases with the decrease in the porosity of the soil
Decreases with the decrease in the plastic limit
Increases with the increase in the initial voids ratio
Decreases with the increase in the initial voids ratio

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