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  • 問題数 54 • 11/4/2024

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    問題一覧

  • 1

    The elastic tendency of liquids which makes them acquire the least surface area possible. It is responsible, for example, when an object or insect such as mosquitoes that is denser than water is able to float or run along the water surface.

    Surface tension

  • 2

    The ratio between the volume of water and the volume of voids.

    Degree of saturation

  • 3

    The ratio between the volume of voids and the volume of the soil mass.

    Porosity

  • 4

    The ratio between the weight and the weight of solid particles.

    Moisture content

  • 5

    Which of the following states the law of buoyancy?

    Archimedes

  • 6

    A flow in which the velocity of the fluid at a particular fixed point does not change with time.

    Steady flow

  • 7

    Which component of rock or soil is independent of interparticle friction?

    Cohesion

  • 8

    A phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading.

    Liquefaction

  • 9

    A pile of sand keeps from spreading out like a liquid because the weight of the sand keeps the grains stuck together in their current arrangement, mostly out of static friction. This weight and pressure is called:

    Effective stress

  • 10

    Which of the following is not a soil component?

    Gas

  • 11

    A practice or procedure used to assess the particle size distribution (also called gradation) of a granular material. The size distribution is often of critical importance to the way the material performs in use.

    Sieve analysis

  • 12

    According to USCS, what do you call a soil grain with grain size greater than 4.75 mm but less than 75 mm?

    Gravel

  • 13

    Which of the following does not affect the settlement of a footing?

    None of these

  • 14

    When the path lines of the individual particles of a flowing liquid are irregular curves and continually cross each other and form a complicated network, the flow is called:

    Turbulent

  • 15

    A line joining the points of highest elevation of water in a series of vertical open pipes rising from a pipeline in which water flows under pressure is referred to as:

    Hydraulic gradient

  • 16

    A pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change) is referred to in hydraulics as:

    Water hammer

  • 17

    At what temperature (°C) at which liquid water has the highest density?

    4

  • 18

    The pressure exerted onto a liquid is transmitted equally and undiminished to all portions of the liquid. This principle in fluid mechanics is known as:

    Pascals

  • 19

    In any stream flowing steadily without friction the total energy contained in the same at every point in its path of flow. This principle is attributed to:

    Bernoulli

  • 20

    Which of the following is not a characteristic of a cohesive soil?

    Possess low shear strength

  • 21

    The ratio of the volume of voids to the total volume of soil.

    Porosity

  • 22

    The ratio of the volume of water to the volume of voids.

    Degree of saturation

  • 23

    Which of the following is not a characteristic of a cohesionless soil.

    Practically impermeable

  • 24

    In standard penetration test, medium dense sand have number of blows of:

    10 to 30

  • 25

    In accordance with the USCS, a soil grain having a size greater than No. 200 sieve opening (0.074 mm) but less than that of a No. 4 sieve (4.75 mm opening) is called:

    Sand

  • 26

    A granular soil deposit is considered medium dense if the blow count of a standard penetration test is between:

    10 and 30

  • 27

    If the ground water table in a soil formation rises as a result of flooding, the bearing capacity of the soil:

    Decreases

  • 28

    Decreases

    cobbles

  • 29

    A type of flow where at any instant, the amount of fluid particles passing through a pipe section is constant.

    Steady

  • 30

    A pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change) is referred to in hydraulics as:

    Water hammer

  • 31

    A line joining the points of highest elevation of water in series of vertical open pipes rising from a pipeline in which water flows under pressure.

    Hydraulic grade line

  • 32

    If the ground water table in a soil formation rises as a resulting of flooding, the bearing capacity of the soil:

    Decreases

  • 33

    One of the following foundation conditions does not affect the bearing capacity of the supporting soil:

    Load imposed onto the soil

  • 34

    On what fundamental concept is the continuity of flow primarily based?

    Conservation of mass

  • 35

    A branch of fluid mechanics that deals with the study of forces exerted by liquids in motion.

    Hydrodynamics

  • 36

    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:

    All of these

  • 37

    A pressure surge or wave caused when a fluid in motion is forced to stop or change direction suddenly (momentum change) is referred to in hydraulics as:

    Water hammer

  • 38

    Which of the following is not affected by minor loss?

    Long pipe

  • 39

    Which of the following shear tests of soil is not performed in a laboratory?

    Shear vane test

  • 40

    In the context of using soil as a construction material, which of the following properties is not typically considered a primary parameter for evaluating its suitability?

    Tensile strength

  • 41

    Which soil property is most used in engineering?

    Void ratio

  • 42

    Which if the following is not a characteristic of cohesionless soil?

    Practically impermeable

  • 43

    Which of the following is not performed in the laboratory

    Standard proctor test

  • 44

    In civil engineering, what is soil?

    Uncemented aggregate

  • 45

    If the deviator stress is increased, the shear stress will increase in the ___.

    Horizontal plane

  • 46

    It is the attraction between water molecules.

    Cohesion

  • 47

    When will the ship be stable?

    Metacenter is above the center of gravity

  • 48

    Pressure rise in water hammer is affected by:

    All of the above

  • 49

    A fireman aims his hose at an angle of 30°. What would be the shape of the projectile?

    Parabola

  • 50

    The ratio between the weight of water and the weight of solid particles.

    Moisture content

  • 51

    The liquid flow is based on the concept of conservation of _______.

    Mass

  • 52

    The shear strength is __________.

    Directly proportional to cohesion

  • 53

    The property of soil which water percolates throughout its layer.

    Permeability

  • 54

    In Terzaghi’s principle, the term Nc, Nq, and Nγ are based on __________.

    Angle of friction