Geotechnical Engineering Mock Test 5

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Question 1 of 10

1. The discharge for drawdown of well is given by _______

\(q=\frac{2πkb(H-h)}{log_e\frac{R}{r}}\)

\(q=\frac{2πkb(H-h)}{log_{10}\frac{R}{r}}\)

\(q=\frac{2πkb(H-h)}{log_e\frac{r}{R}}\)

\(q=\frac{kb(H-h)}{log_e\frac{R}{r}}\)

Question 1 of 10

Question 2 of 10

2. When water flows through a saturated soil mass, piezometric head is the sum of velocity head and position head.

False

True

Question 2 of 10

Question 3 of 10

3. The drawdown, corresponding to a steady discharge, are observed at a number of wells in _______

falling head permeability test

constant head permeability test

pumping in test

pumping out test

Question 3 of 10

Question 4 of 10

4. The focus in an earth dam with no filter is ________

highest point of d/s slope

medium flood level

high flood level

lowest point of d/s slope

Question 4 of 10

Question 5 of 10

5. For the water flowing above an impervious, infinite, horizontal plane. The net flow is given by ___________

Casagrande

Kozney

Darcy

Forchheimer

Question 5 of 10

Question 6 of 10

6. Total head is the sum of ________

piezometric head and position head

position head and velocity head

velocity head and pressure head

piezometric head and velocity head

Question 6 of 10

Question 7 of 10

7. Two tube wells of 20cm diameter each are 100m apart. The coefficient of permeability is 4.15 * 10^-4 m/s, drawdown is 4m and aquifer is 30m thick. If radius of influence is 245m, what is the discharge in each well?

0.042 m³/s

0.036 m³/s

0.040 m³/s

0.033 m³/s

Question 7 of 10

Question 8 of 10

8. The Darcy’s law governing the flow of water through is related to which of the following law?

Ohm’s law

None of the mentioned

Faraday’s law

Stokes law

Question 8 of 10

Question 9 of 10

9. A piezometric surface is the line joining ________

water level in piezometers

equal voids ratio in soil mass

soil stratum

equal velocity of flow

Question 9 of 10

Question 10 of 10

10. The relation between porosity n, specific retention S_R, specific yield S_γ is __________

n= S_R/S_γ

n= S_R-S_γ

n= S_R*S_γ

n= S_R+S_γ

Question 10 of 10