Test: Soil Mechanics - 2
25 Questions MCQ Test Civil Engineering SSC JE (Technical) | Test: Soil Mechanics - 2
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Which of the following is a measure of particle size range?
According to Atterberg, the soil is said to be of medium plasticity if the plasticity index PI is
because 0-7 :Low, 7-17 : Medium, >17 : High Plasticity.
so for soil is said to be of medium plasticity if the plasticity index PI is : 7
In general, 7 is the answer because it is on the lower end.
If the natural water content of soil mass lies between its liquid limit and plastic limit, the soil mass is said to be in
When the plastic limit of a soil is greater than the liquid limit, then the plasticity index is reported as
for a soil mass is calledIf the plasticity index of a soil mass is zero, the soil is
The admixture of coarser particles like sand or silt to clay causes
The water content of soil, which represents the boundary between plastic state and liquid state,is known as
According to IS classification, the range of silt size particles is
Highway Research Board (HRB) classification of soils is based on
Dispersed type of soil structure is an arrangement comprising particles having
Effective stress is a defined property which cannot be measured and is calculated by measuring the total stress and pore water pressure in the field.
Effective Stress= Total Stress- Pore water Pressure
It is not the true contact stress between particles because it uses area for division as gross area rather than Area of actual contact between particles
The degree of saturation in soils can be defined as the ratio of
The total and effective stresses at a depth of 5 m below the top level of water in a swimming pool are respectively
The critical hydraulic gradient ic of a soil mass of specific gravity G and voids ratio e is given by
The hydraulic head that would produce a quick condition in a sand stratum of thickness 1.5 m,specific gravity 2.67 and voids ratio 0.67 is equal to
hydraulic gradient= (G-1)/(1+e)
G=2.67,e=0.67
we get, hydraulic gradient=1
Physical properties of a permeant which influence permeability are
Correct Answer :- c
Explanation : Physical properties of a permanent with influence permeability are Both viscosity and unit weight.
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