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Civil Engineering
Soil Mechanics And Foundations
Quiz 3
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Q.1
Stoke's law sates that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon
shape of grain
weight of grain
size of grain
shape and size of grain
E. shape, size and weight of grain.
Q.2
Accurate determination of water content, is made by
calcium carbide method
sand bath method
alcohol method
oven-drying method.
Q.3
The water content of soil is defined as the ratio of
volume of water to volume of given soil
volume of water to volume of voids in soil
weight of water to weight of air in voids
weight of water to weight of solids of given mass of soil.
Q.4
Rankine's theory of active earth pressure assumes
soil mass is homogeneous, dry and cohesionless
ground surface is a plane which may be horizontal or inclined
back of the wall is vertical and smooth
wall yields about the base
E. all the above.
Q.5
Degree of saturation of a natural soil deposit having water content 15%, specific gravity 2.and void ratio 0.is
50%
60%
75%
80%
Q.6
The effective size of particles of soil is denoted by
D10
D20
D30
D60
Q.7
The coefficient of curvature is defined
D30² D60D10
D60 D10
N 2 D10² D30D60
D10 D60
Q.8
According to Coulomb's wedge theory, the active earth pressure slides the wedge
down and outwards on a slip surface
up and inwards on a slip surface
horizontal upward and parallel to base
horizontal inward and parallel to base.
Q.9
Minimum depth of a footing carrying a heavy load, is calculated by the formula
d 3W 4fL (L + 1)
d= 3W 4fL (L-1)
d = (L-1) 4fL 3W
d= (L-1) 2W 3fL
Q.10
A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.If the moisture content in the soil is 20%, the degree of saturation is
20%
77%
92%
none of these.
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