Soil Mechanics and Foundation
With the increase in the amount of compaction energy

optimum water content decreases but maximum dry density increases
both optimum water content and maximum dry density increase
both optimum water content and maximum dry density decrease[ES 93]
optimum water content increases but maximum dry density decreases

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

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

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Soil Mechanics and Foundation
The total discharge from two wells situated near to each other is

sum of the discharges from individual wells
less than the sum of the discharges from individual wells
equal to larger of the two discharges from individual wells
greater than the sum of the discharges from individual wells

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Soil Mechanics and Foundation
A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m2 when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively

0.2 N/mm² and 0°
0.5 N/mm² and 30°
0.05 N/mm² and 45°
0.05 N/mm² and 0°

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