Top 250+ Solved Geotechnical Engineering MCQ Questions Answer
Q. Coefficient of compressibility is
a. Constant for any type of soil
b. Different for different types of soils and also different for a soil under different states of consolidation
c. Different for different types of soils but same for a soil under different states of consolidation
d. Independent of type of soil but depends on the stress history of soil
Q. The ratio of the weight of water to the weight of solids in a given mass of soil, is known
a. Porosity
b. Specific gravity
c. Void ratio
d. Water content
Q. In a liquid limit test, the moisture content at 10 blows was 70% and that at 100 blows was 20%. The liquid limit of the soil, is
a. 35 %
b. 50 %
c. 65 %
d. None of these
Q. The critical exist gradient of seepage water in soils, increases with
a. An increase in specific gravity
b. A decrease in specific gravity
c. A decrease in void ratio
d. Both (a) and (c)
Q. The Mohr's straight theory is based on the following fact:
a. Material fails essentially by shear
b. Ultimate strength of the material is determined by the stress in the plane of slip
c. Failure criterion is independent of the intermediate principal stress
d. All the above
Q. According to Coulomb's wedge theory, the active earth pressure slides the wedge
a. Down and outwards on a slip surface
b. Up and inwards on a slip surface
c. Horizontal upward and parallel to base
d. Horizontal inward and parallel to base
Q. Pile foundations are generally preferred to for
a. Bridge foundations
b. Sky scrapper buildings
c. Residential buildings
d. Runways
Q. The rise of water table below the foundation influences the bearing capacity of soil mainly by reducing
a. Cohesion and effective angle of shearing resistance
b. Cohesion and effective unit weight of soil
c. Effective unit weight of soil and effective angle of shearing resistance
d. Effective angle of shearing resistance
Q. A soil mass is said to be in plastic equilibrium if
a. It is stressed to maximum
b. It is on the verge of failure
c. It is in plastic stage
d. It starts flowing
Q. Stoke's law states that the velocity at which a grain settles out of suspension, the other factors remaining constant, is dependent upon
a. Shape of grain
b. Weight of grain
c. Size of grain
d. Shape, size and weight of grain
Q. Contact pressure beneath a rigid footing resting on cohesive soil is
a. Less at edges compared to middle
b. More at edges compared to middle
c. Uniform throughout
d. None of the above
Q. The plasticity of fine soils may be assessed by means of
a. Dry strength test
b. Toughness test
c. Dilatancy test
d. All of these
Q. For general engineering purposes, soils are classified by
a. Particle size classification system
b. Textural classification system
c. High Way Research Board (HRB), classification system
d. Unified soil classification system
Q. Water content of soil can
a. Never be greater than 100 %
b. Take values only from 0 % to 100 %
c. Be less than 0 %
d. Be greater than 100 %
Q. Pick up the correct statement from the following:
a. Failure plane carries maximum shear stress
b. Failure plane does not carry maximum shear stress
c. Failure plane carries shear stress equal to maximum shear stress
d. None of these