Civil Engineering MCQs

Page No. 243

Unconfmed compressive strength test is________________?


aundrained test


b drained test


c consolidated undrained test


dconsolidated drained test


View Answer undrained test

In a deposit of normally consolidated clay_________________?


aeffective stress increases with depth but water content of soil and un-drained strength decrease with depth


beffective stress and water content increase with depth but undrained strength decreases with depth


ceffective stress and undrained strength increase with depth but water content decreases with depth


deffective stress, water content and undrained strength decrease with depth



Skempton’s pore pressure coefficient B for saturated soil is________________?


a1


b zero


cbetween 0 and 1


dgreater than 1


View Answer 1

The shear strength of a soil_________________?


ais directly proportional to the angle of internal friction of the soil


bis inversely proportional to the angle of internal friction of the soil


c decreases with increase in normal stress


ddecreases with decrease in normal stress



For better strength and stability, the fine grained soils and coarse grained soils are compacted respectively as____________________?


a dry of OMC and wet of OMC


b wet of OMC and dry of OMC


c wet of OMC and wet of OMC


ddry of OMC and dry of OMC where OMC is optimum moisture content



For a loose sand sample and a dense sand sample consolidated to the same effective stress_____________?


aultimate strength is same and also peak strength is same


bultimate strength is different but peak strength is same


cultimate strength is different but peak strength is same


d ultimate strength is same but peak



With the increase in the amount of compaction energy________________?


aoptimum water content increases but maximum dry density decreases


boptimum water content decreases but maximum dry density increases


cboth optimum water content and maximum dry density increase


dboth optimum water content and maximum dry density decrease



Direct measurement of permeability of the specimen at any stage of loading can be made_______________?


aonly in fixed ring type consolido-meter


bonly in floating ring type consolido-meter


cboth (A) and (B)


d none of the above



The ultimate consolidation settlement of a structure resting on a soil_______________?


adecreases with the increase in the initial voids ratio


bdecreases with the decrease in the plastic limit


c increases with the increase in the initial voids ratio


d increases with the decrease in the porosity of the soil



A normally consolidated clay settled 10 mm when effective stress was increased from 100 kN/m2 to 200 kN/ m2. If the effective stress is further increased from 200 kN/ m2 to 400 kN/ m2, then the settlement of the same clay is__________________?


a10 mm


b20 mm


c 40 mm


d none of the above


View Answer 10 mm

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