WorksheetsCivilwar-Day 32-PWD-Permeability&stresses on soil
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
A 25 kN point load acts on the surface of an infinite elastic medium. The vertical pressure intensity in kN/m² at a point 6.0 m below and 4.0 m away from the load will be
a)
132
b)
1.32
c)
0.132
d)
13.2
2.
The approximate depth at which the effective vertical stress will be equal to 100 kN/m² in a submerged soil with saturated unit weight of 20 kN/m³ is
a)
5 m
b)
10 m
c)
20 m
d)
100 m
3.
Pressure transmitted from particles to the soil mass is called ___________
a)
Effective pressure
b)
Neutral pressure
c)
Pore pressure
d)
Capillary pressure
4.
Rise of water table above the ground surface causes
a)
Equal increase in pore water pressure and total stress
b)
Equal decrease in pore water pressure and total stress
c)
Increase in pore water pressure but decrease in total stress
d)
Decrease in pore water pressure but increase in total stress
5.
The neutral stress on the soil is due to the
a)
External load acting on the soil
b)
Weight of the soil particles
c)
Weight of water present in soil pores
d)
Both a and b
6.
The Darcy law relating to mean velocity and hydraulic gradient in a porous medium is applicable to
a)
laminar regime flow only
b)
transition regime flow only
c)
turbulent regime flow only
d)
flow of all fluids in all regimes of flow
7.
The permeability of coarse grained soil depends on
a)
Effective size particle
b)
Mean size particle
c)
Coefficient of Uniformity
d)
Coefficient of Curvature
8.
Which of the following statements is correct?
a)
The greater the unit weight, the greater is permeability
b)
Unit weight does not affect permeability
c)
The greater the viscosity, the greater is permeability
d)
The greater the unit weight, the smaller is permeability
9.
A soil has discharge velocity of 6 mm/sec and a void ratio of 0.5. Its seepage velocity is
a)
6 mm/sec
b)
12 mm/sec
c)
18 mm/sec
d)
3 mm/sec
10.
Which of the following is highly permeable?
a)
Gravel
b)
Sand mixture
c)
Coarse sand
d)
Clay
100 %
