The total discharge from two wells situated near to each other is_________________?
(A) sum of the discharges from individual wells
(B) less than the sum of the discharges from individual wells
(C) greater than the sum of the discharges from individual wells
(D) equal to larger of the two discharges from individual wells
Due to a rise in temperature, the viscosity and the unit weight of the percolating fluid are reduced to 60% and 90% respectively. If other things remain constant, the coefficient of permeability__________________?
(A) increases by 25%
(B) increases by 50%
(C) increases by 33.3%
(D) decreases by 33.3%
Which of the following methods is more suitable for the determination of permeability of clayey soil ?
(A) constant head method
(B) falling head method
(C) horizontal permeability test
(D) none of the above
Coefficient of permeability of soil______________?
(A) does not depend upon temperature
(B) increases with the increase in temperature
(C) increases with the decrease in temperature
(D) none of the above
Effective stress is______________?
(A) the stress at particles contact
(B) a physical parameter that can be measured
(C) important because it is a function of engineering properties of soil
(D) all of the above
Which of the following methods is best suited for determination of permeability of coarse-grained soils ?
(A) constant head method
(B) falling head method
(C) both the above
(D) none of the above
If the permeability of a soil is 0.8 mm/sec, the type of soil is_______________?
(A) gravel
(B) sand
(C) silt
(D) clay
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_______________?
(A) 1.0m
(B) 1.5 m
(C) 2.0 m
(D) 3m
Effective stress on soil_____________?
(A) increases voids ratio and decreases permeability
(B) increases both voids ratio and permeability
(C) decreases both voids ratio and permeability
(D) decreases voids ratio and increases permeability
Physical properties of a permeant which influence permeability are________________?
(A) viscosity only
(B) unit weight only
(C) both viscosity and unit weight
(D) none of the above