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TERMS > HGE > Flashcards

HGE Flashcards

1
Q

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

A

water hammer

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2
Q

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

A

Hydraulic grade line

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3
Q

Does not affect the bearing capacity of soil

A

Load imposed

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4
Q

ratio of inertia force of a flowing fluid and the viscous force of the liquid

A

Reynolds number

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5
Q

An orifice is called a large orifice if water head is

A

5 times diameter of orifice

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6
Q

Fluids change the volume under external pressure due to

A

compressibility

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7
Q

The coefficient of compressibility of soil is the ratio of

A

strain to stresses

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8
Q

The seepage force in a soil is

A

Perpendicular to equipotential lines
Proportional to exit gradient
Proportional to headloss

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9
Q

NOT a characteristic of cohesionless soil

A

Practically impermeable

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10
Q

Ideal fluid is

A

Frictionless and incompressible

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11
Q

A rise or fall of liquid in a glass tube of a very small diameter when dipped is

A

Directly proportional to the Unit weight of liquid

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12
Q

Atmospheric pressure varies with

A

Altitude
Temperature
Weather conditions

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13
Q

Falling drops of water becomes spheres due to

A

Surface tension

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14
Q

Excavations in open cuts in excess of _______ depth shall have adequately design shoring in support

A

1.5m

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15
Q

If the footprint area of structure is 500m^2 the minimum number of borehole/s

A

2

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16
Q

The shear strength of a soil:

A

Increases with increase in normal stress

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17
Q

Triaxial shear test acts on what axis?

A

all plane axis except x and y axis.

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18
Q

In what plane is the additional stress (deviator stress) can affect the shear stress?

A

Horizontal

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19
Q

What test is not performed in laboratory?

A

Vane test

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20
Q

In AASHTO, soil greater than 75mm is classified as:

A

Cobbles

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21
Q

Nc, Nq, Ngamma are functions of

A

Internal Friction

22
Q

Molecules of liquids gets attracted to

A

surface tension

23
Q

Where is the metacenter for stable equilibrium

A

above the center of gravity

24
Q

The shear strength of the cohesionless soil is

A

Proportional to the tangent of the angle of shearing resistance

25
Q

The intensity of vertical stress, 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 square of depth

26
Q

When the metacenter of a floating body is lower than the center of gravity, then the body will be in

A

unstable equilibrium

27
Q

the metacentric height is the distance between the

A

center of the gravity of the floating body and the metacenter

28
Q

Negative skin friction on piles

A

caused by soft clay
decreases the pile capacity
caused due to relative settlement of soil

29
Q

Specific weight of liquid

A

does not vary on any other planet

30
Q

In civil engineering, soil is

A

uncemented aggregate

31
Q

the weight per unit volume of a liquid at a standard temperature and pressure is called:

A

specific weight

32
Q

Total pressure on top of a closed cylindrical vessel completely filled with liquid is directly proportional to

A

(radius)^4

33
Q

Known as the average diameter

A

D50

34
Q

Compression index of soil

A

Increase with an increase in the liquid limit

35
Q

Unlike Particles

A

Adhesion

36
Q

Like Particles

A

Cohesion

37
Q

Rapid curing of asphalt is formed by cutting asphalt cement

A

Petroleum

38
Q

A soil mass is said to be in plastic equilibrium

A

Verge of failure

39
Q

Practical fluid

A

Viscosity
Surface Tension
Compressibility

40
Q

Moisture driven by heat

A

hydroscopic water

41
Q

The flow in which liquid particles has a definite path and path of adjacent particles do not cross

A

Stream line flow

42
Q

of borehole - 50 m^2

A

1

43
Q

of borehole - 500 m^2

A

2

44
Q

of borehole - 1800 m^2

A

4

45
Q

of borehole - 3200 m^2

A

6

46
Q

of borehole - 7400m^2

A

8

47
Q

Soil shall be considered expansive if plasticity index is _____ or greater

A

15

48
Q

Soil shall be considered expansive if the soil particle pass a No. 200 sieve is more than

A

10%

49
Q

Confining pressure resulting from the fill and exceed swell pressure by

A

20%

50
Q

A fill shall be compacted A minimum of _____ test for every 500m^2

A

3

TERMS (3 decks)

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