Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

QUIZZES > HGE COMPRE KATH > Flashcards

HGE COMPRE KATH Flashcards

1
Q

The minimum water content at which the soil just begins to crumble when rolled into threads 3mm diameter is,
a. Plastic limit
b. Liquid limit
c. Shrinkage limit
d. Permeability limit

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Molecules of fluids get attracted due to
a. Capillary action
b. Adhesion
c. Surface tension
d. Cohesion

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A cylindrical bucket 200mm in diameter and 300mm high is 2/3 full of water. It is swung in a
vertical plane so that the bottom of the bucket describes a radius of 1m. How fast should the
bucket be rotated in rpm so that no water is spilled. Neglect the weight of the water.
a. 3.13
b. 3.30
c. 31.53
d. 29.89

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Evaluate the kinetic energy of a unit weight of water in meters, flowing at 10m/sec.
a. 0.721
b. 0.439
c. 0.815
d. 0.534

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

An experiment to determine the permeability of soil samples was conducted. The permeability
in a falling head test involves a cylindrical soil sample 100mm diameter and a height of 200mm.
The hydraulic head in the 10mm diameter standpipe through which the test water passed
dropped from 1meter to 600mm in one minute of observation. In that duration the water
collected in the graduated was recorded at 2.0 liters. From the data, evaluate the coefficient of
permeability of the soil sample.
a. 0.000224
b. 0.001703
c. 0.001890
d. 0.001910

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  1. Which is false?
    I. Wind blows towards an area of low pressure.
    II. Smoke rises faster in the chimney on a windy day.
    III. You can squirt water over a greater distance by placing your thumb over the end off
    a garden hose than by leaving it completely uncovered.
    IV. Between two sinking objects with the same shape and volume but different weights,
    the heavier object will reach terminal velocity first.
    a. I
    b. II
    c. III
    d. IV
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q
  1. In order to provide water form a nearby spring, a triangular flume of efficient cross section was provided on a slope of 0.15 percent. Assuming the roughness coefficient of the channel equal to 0.20, obtain the depth of flow in meter(s) of the water in the flume if it is discharging at
    the rate of 2 cu.m./sec. Utilize the formula V =(1/n) R^2/3 S^1⁄2 for the velocity of flow.
    a. 1.85
    b. 1.77
    c. 1.69
    d. 1.31
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q
  1. A pressure surge or wave caused when & fluid in motion is forced to stop or change direction
    suddenly (momentum change) is referred to in hydraulics as.
    a. Hydraulic jump
    b. Potential head
    c. Hydrodynamics
    d. Water hammer
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q
  1. If the ground water table in a soil formation rises as a resulting of flooding, the bearing
    capacity of the soil.
    a. Unaffected
    b. Decrease
    c. Increase
    d. Depends on footings load
A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q
  1. A hemispherical container 1 meter in diameter is completely filled with scrambled egg
    mixture, enough to feed the entire family. If shifu accidentally bumped into the container causing
    it to rotate at a constant angular rate of 4 rad/sec, determine the volume of mixture spilled in
    cubic meters.
    a. 0.26
    b. 0.32
    c. 0.16
    d. 0.08
A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
  1. A granular soil deposit is considered stiff if the unconfined compressive strength is between.
    a. 25–80
    b. 80 – 150
    c. 150 – 400
    d. > 400
A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. A consolidation test results shows the change in void ratio for every loading stage.
    100 0.60
    150 0.55
    200 0.40
    Determine the value of compression index, cc
    a. 0.284
    b. 0.639
    c. 0.666
    d. 200
A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
  1. Determine the value of settlement for 1 m thick clay layer with Po= 120 kPa and △P= 20
    kPa, eo = 0.20
    a. 5.00
    b. 11.26
    c. 26.15
    d. 47.26
A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q
  1. According to the elastic theory, the vertical stress induced by a flexible line load of infinite length that has an intensity of a unit/length on the surface of a semi-infinite soil mass can be estimated by the expression

r = horizontal distance from the line of load
z = depth of interest at which stress is induced

  1. Evaluate the bearing stress in Kpa, exerted by the footing onto the support soil.
    a. 14
    b. 16
    c. 10
    d. 12
  2. Evaluate the stress in the soil caused by the load at a depth equal to twice the width of the footing but directly below the masonry wall.
    a. 5.31
    b. 7.25
    c. 4.43
    d. 6.47
  3. Evaluate the stress at a depth of 2m and a horizontal distance of 3m from the line of the load.
    a. 0.531
    b. 0.432
    c. 0.301
    d. 0.686
A

C, A, C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Situation:
A triaxial shear test was performed on a well- drained sand sample. The
normal stress on the failure plane and the shearing stress on the failure plane were determined to be 63 kPa and 42 kPa respectively.
17. Determine the angle of internal friction of the sand, in degrees.
a. 33.7
b. 22.4
c. 27.4
d. 1938

  1. Determine the angle, in degrees of the failure plane with respect to the horizontal plane.
    a. 26.2
    b. 61.8
    c. 54.9
    d. 58.7
A

A, B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

SITUATION. A circular footing with a 1.5 m diameter is to be constructed 1.22m below the ground surface. The groundwater table is at a great depth and its effect can be neglected. The subsoil consists of a uniform deposit of dense soil having the following strength parameters:
Angle of inertial friction = 25 degrees (Nc = 24.1, Nq = 13.1, Ny = 9.1)
Unconfined compressive strength = 96 kPa
Unit weight of soil = 20.12 kN/m2
Hint: qu = 1.3cNc + qNq + 0.30yBNy

  1. Compute the ultimate bearing capacity of the soil.
    a. 1966.21 kPa
    b. 1935.25 kPa
    c. 1907.79 kPa
    d. 1981.59 kPa
  2. Compute the total allowable load that the footing can carry using a factor of safety of 3.
    a. 3474.6 kN
    b. 1123.8 kN
    c. 3371.3 kN
    d. 1158.2 kN
  3. How many meters of water is equivalent to 2.75 atmospheres?
    a. 38.7 m
    b. 24.8 m
    c. 31.6 m
    d. 27.5 m
A

C, B, B

17
Q

SITUATION. The coefficient of permeability below a dam is 4 m/day. The water on the upstream
side is 20 meters higher than on the downstream side. To estimate the seepage below the dam, a flow net was graphically drawn such that the number of potential drops, Nd = 10 and the number of low channels Nf = 4. The base of the dam is founded 1 m below the ground. Between
the heel and the toe of the dam, a distance of 30 meters, there are 9 potential drops.

  1. Evaluate the seepage flow per meter width of dam, in liter/min.
    a. 18.5
    b. 32.5
    c. 20.6
    d. 22.2
  2. Determine the uplift pressure at the heel of the dam, in kPa.
    a. 114
    b. 181
    c. 177
    d. 198
A

D, C

18
Q
  1. When a cohesionless soil attains quick condition, it loses
    a. Shear strength
    b. Bearing capacity
    c. both A and B
    d. Neither A nor B
A

C

19
Q

Situation. A retaining wall 12 m high has a horizontal backfill on its vertical face to its base. under normal conditions, the backfill has a water content of 10% and a void ratio of 0.50. the specific gravity of the soil grains is 2.50 and the angle of internal friction is 20 deg. using
rankine’s theory of lateral earth pressure.

  1. Evaluate the total horizontal lateral force per meter width of wall, in kn, due to the water.
    a. 600
    b. 520
    c. 810
    d. 706
  2. Evaluate the total horizontal lateral force per meter width of wall, in kn, due to the soil.
    a. 289
    b. 250
    c. 220
    d. 235
  3. How many times would the horizontal lateral force be increase if the backfill is fully saturated
    with rain water?
    a. 1.54
    b. 1.36
    c. 1.65
    d. 1.06
A

D, A, C

20
Q
  1. One of the following foundation conditions does not affect the bearing capacity of the supporting soil.
    a. Unit weight of the soil
    b. Load imposed onto the soil
    c. Depth of founding of footings
    d. Position of ground water table
A

B

21
Q
  1. What important property of soil is most influenced by engineering?
    a. Porosity
    b. Void Ratio
    c. Specific Gravity
    d. Water Content
A

B

22
Q
  1. A confined aquifer has a source of recharge. The hydraulic conductivity of the aquifer is 40
    m/day and its porosity is 0.25. The piezometric head in the two wells 1000 m. apart is 65m. and 60m. respectively from a common data. The average thickness of the aquifer is 25 m. and the average width is 4 km. Compute the rate of flow through the aquifer in m^3/day.
    a. 25000
    b. 20000
    c. 30000
    d. 35000
A

B

23
Q

SITUATION: A vertical triangular plate whose height is 36 m. has its base horizontal and vertex upper most in the water surface.

  1. Find the depth to which it must be lowered from its vertex so that the difference in level between the center of gravity and the center of pressure shall be 20 cm.
    a. 3.6m
    b. 1.2m
    c. 2.4m
    d. 1.8m
  2. How far is the center of pressure below the water surface?
    a. 4.8m
    b. 4.2m
    c. 6.0m
    d. 3.6m
  3. What is the base width of the plate if the water surface. total hydrostatic force acting on the
    plate is 76.28 kN.
    a. 1.2m
    b. 1.5m
    c. 0.9m
    d. 1.8m
A

B, A, A

24
Q

SITUATION: Sphere A is attached to Sphere B by a cable whose mass is negligible. Both spheres are identical in dimensions, R = 0.6 m, but differ in material composition. If sphere A has a weight of 12kN and sphere B has a weight of 4kN and both spheres are thrown in
freshwater, determine the following:

  1. The draft of the sphere.
    a. 98.5 cm
    b. 85.8 cm
    c. 79.5 cm
    d. 148.6 cm
  2. The tension of the cable connecting the spheres.
    a. 3241 kN
    b. 3124 kN
    c. 4213 kN
    d. 2134 kN
  3. The exposed volume of sphere B in cubic meters.
    a. 0.0176
    b. 0.726
    c. 0.114
    d. 0.220
A

B, B, A

25
Q
  1. SITUATION.
    SECTION 304 of the NSCP states
    “… All values of allowable foundation pressure are for footings having a minimum width of 300mm and a minimum depth of 300mm into natural grade. Increase of 20 percent is allowed for each additional 300mm of width and/or depth to a maximum value of three times the designated value.” A square footing rests on a sandy gravel soil whose allowable foundation pressure is 100 kPa.
  2. Determine the allowable foundation pressure (kPa) of a square footing 1.2m wide with depth of embedment of 0.3m.
    a. 220
    b. 200
    c. 180
    d. 160
  3. Determine the allowable foundation pressure (kPa) of a square footing 1.2m wide with a
    depth of embedment of 0.9m.
    a. 247
    b. 236
    c. 224
    d. 210
  4. Determine the gross service load (kN) that can be carried by the footing.
    a. 323
    b. 242
    c. 303
    d. 340
A

D, C, A

26
Q
  1. A right cylindrical container 2.5m in a diameter is m tall. A 50mm diameter hole is provided
    at the bottom of the container to drain the water when necessary. If it is 2/3 full of water, how
    long in minutes does it take to empty the container from the instant that the hole is opened?
    Coefficient of velocity and coefficient of contraction both equal to 1.
    a. 26.61 min
    b. 21.16 min
    c. 28.86 min
    d. 23.38 min
A

A

27
Q
  1. The slope of fill surfaces shall be no steeper than is safe for intended use. Fill slopes shall be no steeper than .
    a. 33%
    b. 50%
    c. 67%
    d. 45%
A

B

28
Q
  1. A barge weighing 350N when empty 6m wide, 15m long and 3m high floating upright, evaluate the draft of the barge in meters when transporting 5000 bags of cement along a river, each bag having a mass of 40 kg. Assume the specific gravity of the water is 1.02.
    a. 2.18 m
    b. 2.22 m
    c. 2.62 m
    d. 2.57 m
A

A

29
Q

SITUATION: The coefficient of permeability below a dam is 4 m/day. The water on the upstream
side is 20 m higher than on the downstream side. To estimate the seepage below the dam, a flow net was graphically drawn such that the number of potential drops, Nd=10 and the number of flow channels, Nf=4. The base of the dam is found 1 m below the ground. Between the heel and the toe of the dam, a distance of 30 meters, there are 8 potential drops.

  1. Evaluate the seepage per flow meter width of the dam, in liter/min.
    a. 18.5
    b. 32.5
    c. 20.6
    d. 22.2
  2. Determine the uplift pressure at the heel of the dam, in kPa.
    a. 114
    b. 181
    c. 177
    d. 198
  3. Determine the uplift pressure at the toe of the dam, in kPa.
    b. 11.4
    b. 19.6
    c. 14.7
    d. 17.6
A

D, C, B

30
Q

PILE GROUP:
Pile Size = 400 mm x 400 mm
Pile Length = 20 m
Total Load, Q = 12 MN
Efficiency = 82 %
Unconfined compression strength, qu = 120 kPa

  1. What is the required number of piles?
    a. 6
    b. 7
    c. 8
    d. 9
A

C

31
Q

SITUATION: A 3-layer soil has the following properties from top to bottom.
Layer K, cm/sec Thickness, m
1 2.0 x10^-4 4
2 3.2 x10^-2 3
3 4.1 x10^-5 6

  1. Obtain the equivalent horizontal coefficient of permeability, in cm/ sec.
    a. 0.00689
    b. 0.00734
    c. 0.00809
    d. 0.00747
  2. Obtain the equivalent vertical coefficient of permeability, in cm/ sec.
    a. 0.0000709
    b. 0.0000534
    c. 0.0000689
    d. 0.0000805
  3. Estimate the rate of flow in the vertical direction per square meter of layer, in liters/hr if thehydraulic gradient is 0.50.
    a. 4.65
    b. 3.24
    c. 1.45
    d. 2.85
A

D, D, C

32
Q
  1. An upstream point in a horizontal tube has a velocity head equal to 1m. Determine the
    change in pressure head if the velocity of a point downstream is double of the upstream.

a. 1m-rise
b. 1m-drop
c. 3m-rise
d. 3m-drop

A

D

QUIZZES (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions