CE BOARDS APRIL 2023 Flashcards
The shear strength of a soil:
a. is proportional to the cohesion of the soil
b. is proportional to the tangent of the angle of internal friction
c. increases with increase in normal stress
d. decrease with decrease in normal stress
C. Increases with increase in normal stress
Triaxial shear test acts on what axis ?
a. x-axis
b. y-axis
c. both axis
d. all plane axis except x and y axis
d. all plane axis except x and y axis
In what plane is the additional stress ( deviator stress ) can affect the shear stress ?
a. Horizontal
b. Vertical
c. Both vertical and Horizontal
d. inclined
A. Horizontal
What test is not performed in laboratory ?
a. Direct shear test
b. Triaxial shear test
c. Unconfined compression test
d. Vane test
D. Vane test
Ratio of weight of water to the weight of solid particles.
a. water content
b. porosity
c. void ratio
d. degree of saturation
A. water content
In AASHTO, soil greater than 75mm is classified as
a. cobbles
b. boulders
c. gravel
d. clays
A. cobbles
In 1.3CNc + qNq + 0.4YBNy
Nc, Nq, Ny are function of
a. cohesion
b. angle of friction
c. both cohesion and angle of friction
d. none of the above
B. angle of friction
Molecules of liquid gets attracted to
a. cohesion
b. adhesion
c. capillary action
d. surface tension
D. Surface tension
Where is the metacenter for stable equilibrium ?
a. above the center of gravity
b. at the center of gravity
c. below the center of gravity
d. one half of the total draft
A. above the center of gravity
If the volume of voids is equal to the volume of solids what is the porosity and void ratio equal to respectively ?
a. 0.5 and 1
b. 0 and 0.5
c. 0 and 1
d. 1 and 0.5
A. 0.5 and 1
The shear strength of a cohesionless soil is :
a. Proportional to the angle of the shearing resistance.
b. inversely proportional the angle of shearing resistance
c. Proportional to the tangent of the angle of shearing resistance
d. None of the above
C. Proportional to the tangent of the angle of shearing resistance
The intensity of vertical stress Oz at a depth due to a point load acting on the surface of a semi infinite elastic soil mass is :
a. Directly proportional to the depth
b. Inversely proportional to the depth
c. Directly proportional to the square of depth
d. Inversely proportional to the square if depth
C. Directly proportional to the square of deph
When the metacenter of a floating body os lower than the center of gravity, then the body will be in
a. unstable equilibrium
b. stable equilibrium
c. neutral equilibrium
d. not of a, b, c are corrected
A. unstable equilibrium
The metacentric height is the distance between the
a. center of gravity of the floating body and the center of bouyancy
b. center of gravity of the floating body and the metacenter
c. metacenter and the center of bouyancy
d. original center of buoyancy and new center of buoyancy
B. center of he gravity of the floating body and the metacenter
Negative skin friction on piles
a. caused by soft clay
b. decreases the pile capacity
c. is caused due to relative settlement of soil
d. all of the above
D. All of the above
Specific weight of liquid __________
a. remains constant at every place
b. does not remain constant at every place
c. does not vary on any other planet
d. varies from place to place in the earth
C. does not vary on any other planet
In civil engineering soil is _______
a. found in earths crust
b. it is all plants grow
c. uncemented aggregate
d. all of these
C. Uncemented Aggregate
The weight per unit volume of a liquid at a standard temperature and pressure is called :
a. specific gravity
b. specific weight
c. mass density
d. none of the above
B. Specific Weight
On what fundamental concept is the continuity of flow primarily based ?
a. newtons second law
b. pascals law
c. work energy
d. conservation mass
D. conservation mass
A branch of fluid mechanics that deals with the study of forces exerted by liquid in motion
a. water hammer
b. fluid flow
c. hydrodynamics
d. hydraulic jump
C. Hydrodynamics
The total pressure force on a plane surface is equal to the area multiplied by the intensity of pressure at the centroid if the surface is :
a. Horizontal
b. Inclined
c. Vertical
d. All of the these
D. All of these
A pressure surge or wave caused when a fluid in motion os forced to stop or change direction suddenly ( momentum change ) is referred to in hydraulics as:
a. hydrodynamic
b. Hydraulic Jump
c. water hammer
d. potential head
C. Water Hammer
Which of the following is not affected by minor loss ?
a. long pipe
b. both long and short pipe
c. short pipe
d. cant say
a. Long Pipe
In the context of using soil as a construction material which of the following properties is NOT typically considered a primary parameter for evaluation its suitability ?
a. Tensile strength
b. shear strength
c. compaction strength
d. compressive strength
A. Tensile Strength
Which of the soil property is most used in engineering
a. specific gravity
b. moisture content
c. void ratio
d. porosity
C. Void Ratio
Which of the following is not a characteristics of cohesion less soil?
a. practically impermeable
b. easy to compact
c. prone to settlement
d. high shear strength
A. Practically Impermeable
