Soil Mechanics and Foundation
Terzaghi’s bearing capacity factors Nc, Nq and Nr are functions of

cohesion only
both cohesion and angle of internal friction
angle of internal friction only
both cohesion and angle of internal friction

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Soil Mechanics and Foundation
The shear strength of a soil

Is inversely proportional to the angle of internal friction of the soil
Decreases with decrease in normal stress
Decreases with increase in normal stress
Is directly proportional to the angle of internal friction of the soil

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

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Soil Mechanics and Foundation
Quick sand is a

flow condition occurring in cohesionless soils
flow condition occurring in both cohesive and cohesionless soils
flow condition occurring in cohesive soils
type of sand

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Soil Mechanics and Foundation
The average coefficient of permeability of natural deposits

Parallel to stratification is always greater than that perpendicular to stratification
Is always same in both directions
Parallel to stratification may or may not be greater than that perpendicular to stratification
Parallel to stratification is always less than that perpendicular to stratification

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