問題一覧
1
A fluid property that measures the fluid's resistance to shear stress
Viscosity
2
Which component of rock or soil is independent of inter particle friction?
cohesion
3
A flow in which the velocity of the fluid at a particular fixed point does not change with time
Steady flow
4
What type of soil having fraction passing the No. 200 sieve under AASHTO?
Silt and Clay
5
What type of soil having fraction passing the 75 mm sieve and retained on the No. 10
Gravel
6
At what temperature ('C) at which liquid has the highest density?
4
7
in AASTHO, solid greater than 75 mm is classified as:
Cobbles
8
Type of soil where the fine fractions have plasticity index of 10 or less
Silty
9
What test is not performed in laboratory?
Vane test
10
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:
Directly proportional to the square of depth
11
Specific weight of liquid____
Does not vary on the other planet
12
what is the classification of soil having particle size < 0.075
Silt and clay
13
When the ship's metacenter and center of gravity coincide at same point then the vessel is said to be in:
Neutral equilibrium
14
What type of soil having fraction passing No. 10 (2 mm) sieve and retained on the No. 200 ( 0.075)
Sand
15
Which of the following is not a unit of pressure?
Kn-m
16
which of the following does not affect the settlement of a footing?
none of these
17
One of the following foundation conditions does not affect the bearing capacity of the supporting soil
Position of ground water table
18
Soil particles having particular size limits from 2 mm to 0.05 mm in diameter under USDA
Sand
19
Trial axial shear test acts on what axis?
All plane axis except x and y axis
20
The shear strength of a soil:
Increases with increase in normal stress
21
The pressure on any surface always acts:
normal to the surface
22
what is the classification of soil having particle sizes from 2 to 0.075
Sand
23
The ratio between the volume of water and thw volume of the soil mass
Degree os saturation
24
A line joining the points of highest elevation of water in a series of vertical open pipes rising a pipeline in which water flows under pressure is referred to as
hydraulic gradient
25
The metacentric height is the distance between the
Center of the gravity of the floating body and the metacenter
26
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
27
Approximately how many times is the pressure of mercury greater than the pressure exerted by water?
13.6
28
Soil having size larger than 75 mm
Boulders and cobbles
29
The vena contracta of a circular orifice is approximately ___ diameter downstream from the inner face of the orifice plate
1/2
30
Molecules of liquid gets attracted to____
Surface tension
31
In a bakery,
967
32
When a tank of water is subjected to a vertical acceleration, the water surface will:
remain horizontal
33
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
34
A pile of sand keeps from spreading out like a liquid because of 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
35
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
36
When the path lines of the individual particles of a following liquid are irregular curves and continually cross each other and form a complicated network, the flow is called:
Turbulent
37
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 perform in use.
sieve analysis
38
Type of soil where the fractions have plasticity index of 11 or more
Clayey
39
In civil engineering, soil is
uncemented aggregate
40
Where is the metacenter for stable equilibrium?
Above center of gravity
41
What is the classification of soil having particles sizes <0.002
Clay
42
The porosity of soil can be grater than 1
false
43
If the volume of voids is equal to the volume of solids, what is the porosity and void ratio equal to respectively?
0.5 and 1
44
A phenomenon in which the strength and stiffness of a soil is reduced by earthquake shaking or other rapid loading
liquefaction
45
The shear strength of a cohisionless soil is:
Proportional to the tangent of the angle of shearing resistance
46
1.3Cnc+qNq+0.4BnyY... are function of?
Angle of friction
47
Classifitions of soil under AASHTO where P.I < LL - 30
A-7-5
48
which of the following is not a soil component?
gas
49
What is the classification of soil having particles sizes from 76.2 to 2 mm
Gravel
50
Solid void ration can be greater than 1
true
51
Soil particles having particular size limits feom 0.05 mm to 0.002 mm in diameter under USDA
Silt
52
A cohesive soil deposit is considered soft if the unconfined compression strength, in Kpa, is between
25-50
53
What is the classification of soil having particles sizes from 0.075 to 0.002
Silt
54
The weight per unit volume of a liquid at a standard temperature and pressure is called
Specific weight
55
When the metacenter of a floating body is lower than the center of gravity, then the body will be in:
Unstable equilibrium
56
A ship, with vertical sides near the water line , weighs 40 MN and draws 6.7 m in salt water (s.gr= 1.026). Discharge of 2 MN of water ballast decreases the draft to 6.4m. what would the draft d of the ship in fresh water?
6.548
57
In vectors, normal means:
perpendicular
58
Negative skin friction on piles
All of the above
59
In what plane is the additional stress (deviator stress) can affect the shear stress?
Horizontal
60
A cohesive soil deposit is considered stiff if the unconfined compression strength, in Kpa, is between
100-200
61
Classifitions of soil under AASHTO where P.I > LL - 30
A-7-6
62
Which of the following is NOT a characteristics of a cohesionless soil.
Practically impermeable
63
If the ground water table in a soil formation rises a resulting of flooding, the bearing capacity of the soil
decreases
64
The ration between the weight of the water and the weight of solid particles
Moisture content
65
A cohesive soil deposit is considered very soft if the unconfined compression strength, in Kpa, is between
0-25
66
According to USCS, what do you call a soil grain size grater than 4.75 mm but less than 75 mm?
gravel
67
The pressure above atmosphere is called:
gage pressure
68
Atterberg limit tests is done on aggregates that pass through what sieve size?
40
69
Soil particles having particular size limitsmaller than 0.002 mm in diameter under USDA
Clay
70
The ratio between the volume of voids and the volume of the soil mass
Void ratio
71
Into a bakery dough mixing...
3.68