Refresher Assessment – Terms Hydraulics & Geotechnical Engineering

22. Was originally proposed by a Highway Research Board's Committee on Classification of Materials for Subgrades and Granular Type Road. According to the present form of the system, soil can be classified according to eight major groups, A-1 through A-8, based on the grain size distribution, liquid limit and plasticity indices. A. AASHTO System C. USDA System B. USCS System D. MIT System

AASHTO System

49. The state occurs when a soil mass is allowed to relax or move outward to the point of reaching the limiting strength of the soil; that is, the soil is at the failure condition in extension. Thus, it is the minimum lateral soil pressure that may be exerted. A. Active State C. Equilibrium/At-rest State B. Passive State D. NOTA

Active State

48. It is a versatile sounding method that can be used to determine the material in a soil profile and estimate their engineering properties. A. Cone Penetration Test C. Static Penetration Test B. Dutch Cone Penetration Test D. All of the Above

All of the Above

29. The coefficient of permeability of soil depends on A. Fluid viscosity and pore size distribution B. Grain size distribution and degree of saturation C. Roughness of soil particles and degree of saturation D. All of these

All of these

17. Are the limits of water content used to define soil behavior. A. Atterberg's Limits C. Plastic limits B. Liquid limits D. Shrinkage Limits

Atterberg's Limits

46. It is a type of failure occurs in a such a way that the surface of sliding passes at a distance below the toe of the slope. A. Slope failure C. Circular Failure B. Base Failure D. Critical Failure

Base Failure

7. A written record of information about the soil removed from a hole drilled in the earth. A. Borehole C. Borrow Pit Record B. Borelog D. Sol Exploration

Borelog

8. Is also known as total, wet or moist unit weight. It is the total weight divided by the total volume A. Saturated unit weight C. Submerged unit weight B. Bulk unit weight D. Effective unit weight

Bulk unit weight

40. Generally decreases as the liquid limit of soil increases and its range of variation is rather wide. A. Coefficient of Consolidation C. Secondary compression index B. Coefficient of pre-consolidation D. Swell Index

Coefficient of Consolidation

25. Is the densification of soil by removal of air, which requires mechanical energy. A. Cohesion C. Consolidation B. Compression D. Compaction

Compaction

5. That flow in open channels at which the energy content of the fluid is at a minimum. A. Most efficient B. Steady C. Un-steady D. Critical

Critical

43. It is the oldest and simplest form of shear test arrangement. The test equipment consists of a metal shear box in which the soil specimen is placed. A. Direct Shear Test C. Consolidated-drained Test B. Triaxial Shear Test D. Consolidated-undrained Test

Direct Shear Test

33. The sum of the vertical components of the forces developed at the points of contact of the solid particles per unit cross sectional area of the soil mass. A. Total Stress C. Effective Stress B. Partial Stress D, Maximum Stress

Effective Stress

13. A line joining the elevation of energy heads of a stream; a line drawn above the hydraulic grade line a distance equivalent to the velocity head of the flowing water at each cross section along a stream or channel reach or through a conduit. A. Energy Head C. Flow Line B. Energy Grade D. Energy Gradient

Energy Grade

31. A line along which the potential head at all points are equal. A. Equiflow line C. Energy Line B. Equipotential Line D. Datum Line

Equipotential Line

32. Are constructed to calculate the groundwater flow in the media that combine flow line and equipotential lines. A. Flow Nets C. Flow Indices B. Flow Media D. Flow Curves

Flow Nets

30. Is a line along which water particle will travel from upstream to the downstream side in the permeable soil medium. A. Flow line C. Energy Line B. Equipotential Line D. Seepage Line

Flow line

1. It is the distribution in the particle size of the soil. A. Separation C. Gradation B. Erosion D. Compaction

Gradation

6. Is the grain size corresponding to 10 percent passing on a grain-size distribution curve. A. Terzaghi's Effective Size C. Atterberg's Effective Size B. Hazen's Effective Size D. Casagande's Effective Size

Hazen's Effective Size

19. Vertical distance measured between two stages in a liquid. It measures the pressure exerted by the weight of liquid above a specified point. A. Head B. Gage C. Absolute D. Effective

Head

28. It is also called coefficient of permeability. A. Hydraulic seepage C. Coefficient of flow B. Hydraulic conductivity D. Coefficient of percolation

Hydraulic conductivity

3. Is the test used to determine the grain size distribution of the soils passing the No. 200 sieve. A. Hydrometer Analysis C. Size Particle Analysis B. Sieve Analysis D. Soil Analysis

Hydrometer Analysis

4. It is based on Stokes' law, which relates the terminal velocity of a free-falling sphere in a liquid to its diameter. A. Hydrometer Analysis C. Size Particle Analysis B. Sieve Analysis D. Soil Analysis

Hydrometer Analysis

15. These are the regions found on the analysis of the variation hydraulic gradient. I. Laminar Flow Zone II. Transition Zone III. Turbulent Flow Zone IV. undisturbed flow zone A. I only C. I, II, and III only B. I and II only D. All of the Above

I, II, and III only

34. Caused by the elastic deformation of dry soil and of moist and saturated soils without any change in the moisture content. A. Immediate settlement B. Primary consolidation settlement C. Secondary consolidation settlement D. Tertiary Consolidation settlement

Immediate settlement

36. He proposed a correlation for the net allowable bearing pressure for foundation with the standard penetration resistance. A. Rankine B. Coulomb C. Terzaghi D. Meyorhof

Meyorhof

21. A channel where the flow streamlines are not straight and parallel. A. Open B. Uniform C. Non-Uniform D. Slope

Non-Uniform

26. The moisture content at which the maximum dry unit weight of soil is attained. A. Maximum moisture content C. Minimum moisture content B. Optimum moisture content D. Average moisture content

Optimum moisture content

37. Ratio of preconsolidation pressure to present effective overburden pressure. A. Overconsoldation ratio C. Oversettlement ratio B. Overburden ratio D. Overstress ratio

Overconsoldation ratio

44. It refers to the condition in which every point in a soil mass is on the verge of failure. A. Plastic Equilibrium C. Dynamic Equilibrium B. Elastic Equilibrium D. Static Equilibrium

Plastic Equilibrium

35. The result of volume change in saturated cohesive soils because of the expulsion of water that occupies the void spaces. A. Immediate settlement B. Primary consolidation settlement C. Secondary consolidation settlement D. Tertiary Consolidation settlement

Primary consolidation settlement

11. Is a field measure of the ability of the soil to withstand an applied stress or pressure as applied using the thumb and forefinger. A. Rupture Resistance C. Soil Stability B. Soil Resistance D. Soil Consistency

Rupture Resistance

41. It is another way to accelerate the consolidation settlement of soft, normally consolidated clay layers and achieve precompression before foundation construction. It is constructed by drilling holes through the clay layers in the field at irregular intervals. A. French Drain B. Sand Drain C. American Drain D. NOTA

Sand Drain

38. The internal resistance per unit area of the soil mass to resist failure and sliding along any plane. A. Shear strength C. Bearing strength B. Effective strength D. Normal strength

Shear strength

20. Is defined as the moisture content at which no further volume change occurs with further reduction in moisture content. A. Atterberg's Limits C. Plastic limit B. Liquid limit D. Shrinkage Limit

Shrinkage Limit

2. It is used to determine the grain size distribution of coarse-grained soil. A. Hydrometer Analysis C. Size Particle Analysis B. Sieve Analysis D. Soil Analysis

Sieve Analysis

45. It is an analysis which involves determining and comparing the shear stress developed along the most likely rupture surface with shera strength of the soil. A. Slope Stability Analysis C. Mohr Coulumb Theorem B. Director Shear Analysis D. NOTA

Slope Stability Analysis

47. It is a type of failure occurs in a such a way that the surface of sliding intersects the slope or above its toe. A. Slope failure C. Circular Failure B. Base Failure D. Critical Failure

Slope failure

10. Provides a means of describing the degree and kind of cohesion and adhesion between the soil particles as related to the resistance of the soil to deform or rupture. A. Soil Consistence C. Soil Stability B. Soil Firmness D. Soil index

Soil Consistence

12. Is defined as the relative ease with which a soil can be deformed. use the terms of soft, firm, or hard. A. Rupture Resistance C. Soil Stability B. Soil Resistance D. Soil Consistency

Soil Consistency

9. It tells us how many times the soil grain is heavier than water. A. Density of soil C. Unit weight of soil B. Specific gravity of soil D. Unit mass of soil

Specific gravity of soil

50. He was the first to present a comprehensive theory for evaluating the ultimate bearing capacity of rough shallow foundation. According to his theory the depth of the foundation is shallow if the depth of the foundation is less than or equal to the width of the foundation. A. Rankine B. Coulomb C. Terzaghi D. Meyorhof

Terzaghi

42. It is one of the most reliable methods available for determining the shear strength parameters. It is used widely for both research and conventional testing. A. Direct Shear Test C. Consolidated-drained Test B. Triaxial Shear Test D. Consolidated-undrained Test

Triaxial Shear Test

23. Is a soil classification system used in engineering and geology to describe the texture and grain size of a soil. The classification system can be applied to most unconsolidated materials, and is represented by a two-letter symbol. A. AASHTO System C. USDA System B. USCS System D. MIT System

USCS System

24. It is also called as Textural classification system A. AASHTO System C. USDA System B. USCS System D. MIT System

USDA System

27. It is a technique for in situ densification of thick layers of loose granular soil deposits. A. Sand cone method C. Rubber balloon method B. Nuclear method D. Vibroflotation

Vibroflotation

39. It is approximately a straight line on a semi logarithmic plot as shown in a consolidation characteristic of normally consolidated clay of low to medium sensitivity, it occurred when slope is equal to Cc. A. Virgin Consolidation Curve B. Consolidation Curve for Remolded Specimen C. Laboratory Consolidation Curve D. NOTA

Virgin Consolidation Curve

18. A small opening that allows water to drain from within an assembly. A. Bore Hole C. Drain Hole B. Weep Hole D. Water Hole

Weep Hole

14. It involves the attraction of a water molecule to a non-water molecule (water-solid bond). A. cohesion B. adhesion C. stickiness D. plasticity

adhesion

16. Degree a soil can be molded or reworked causing permanent deformation without rupturing. A. cohesion B. adhesion C. stickiness D. plasticity

plasticity