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

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
less than the sum of the discharges from individual wells

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Soil Mechanics and Foundation
A tri-axial shear test is preferred to direct shear test, because

None of these
Precise measurement of pore pressure and change in volume during test, is not possible
It can be performed under all three drainage conditions with complete control
Stress distribution on the failure plane, is non uniform

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Soil Mechanics and Foundation
For a loose sand sample and a dense sand sample consolidated to the same effective stress

ultimate strength is same but peak
ultimate strength is same and also peak strength is same
ultimate strength is different but peak strength is same
ultimate strength is same but peak strength of dense sand is greater than that of loose sand

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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

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

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