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Well Hydraulics Online Exam Quiz

Important questions about Well Hydraulics. Well Hydraulics MCQ questions with answers. Well Hydraulics exam questions and answers for students and interviews.

Which of the following test is commonly adopted for determining soil permeability of soil formations?

Options

A : a. Pumping-in test and Pumping-out test

B : b. Horizontal capillary test

C : c. None of the mentioned

D : d. All of the mentioned

The value of specific yield SY, of an aquifer depends on ___________

Options

A : a. Grain size

B : b. Compaction of stratum

C : c. Grain shape

D : d. All of the mentioned

Specific yield of unconfined aquifer indicates __________

Options

A : a. Water capacity

B : b. Volume of water

C : c. Water retained

D : d. All of the mentioned

Dupuit’s theory was later modified by _________

Options

A : a. Thiem

B : b. Darcy

C : c. Alam Singh

D : d. Louden

The parabolic depression in the aquifer is called as __________

Options

A : a. Cone of depression and Drawdown curve

B : b. Parabolic curve

C : c. None of the mentioned

D : d. All of the mentioned

In most of the confined aquifers, the value of storage coefficient ranges between __________

Options

A : a. 0.05 to 0.0005

B : b. 0.5 to 0.005

C : c. 0.00005 to 0.005

D : d. 0 to 5

Which of the following is depicted by Dupuit’s theory?

Options

A : a. The velocity of flow

B : b. Co-efficient of transmissibility

C : c. Radial flow of water

D : d. Volume of aquifer

The co-efficient of transmissibility (T) of an aquifer is given by which of the following equation?

Options

A : a. T=b k

B : b. T=b/k

C : c. T=(b k)2

D : d. T=k/b

According to Dupuit’s theory,the velocity of flow is proportional to__________

Options

A : a. Sine of hydraulic gradient

B : b. Tangent of hydraulic gradient

C : c. None of the mentioned

D : d. All of the mentioned

Dupuit’s theory states that, the Darcy’s law equation is not valid near_________

Options

A : a. Well face

B : b. Top Surface of well

C : c. Sides of the well

D : d. All of the mentioned

The specific yield S? is given by _______

Options

A : a. (Vwy+V)*100

B : b. (Vwy-V)*100

C : c. (Vwy/V)*100

D : d. (Vwy*V)*100

The value of specific yield depends upon the shape of the pores.

Options

A : a. True

B : b. False

C : c. May be True or False

D : d. Can't say

The specific retention SR is given by _______

Options

A : a. (VwR+V)*100

B : b. (VwR-V)*100

C : c. (VwR/V)*100

D : d. (VwR*V)*100

The relation between porosity n, specific retention SR, specific yield S? is __________

Options

A : a. n= SR-S?

B : b. n= SR+S?

C : c. n= SR*S?

D : d. n= SR/S?

In the storage coefficient, the unit change in the component of the head is measured in _________ to the surface.

Options

A : a. normal

B : b. tangential

C : c. radial

D : d. inclined at 30°

The coefficient of transmissibility is defined as the rate of flow of water through a horizontal strip of unit width and full saturation height under unit hydraulic gradient.

Options

A : a. True

B : b. False

C : c. May be True or False

D : d. Can't say

If b is the aquifer thickness, the relationship between coefficient of transmissibility T and coefficient of permeability is ________

Options

A : a. T=bk

B : b. T=b/k

C : c. T=b+k

D : d. T=b-k

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

Options

A : a. pumping out test

B : b. pumping in test

C : c. constant head permeability test

D : d. falling head permeability test

The formula for the pumping out test in an unconfined aquifer is given by _________

Options

A : a. \(k=\frac{q?}{1.36(H^2-h^2)}log_{10}\frac{R}{r} \)

B : b. \(k=\frac{q}{1.36(H^2-h^2)}log_{10}\frac{R}{r} \)

C : c. \(k=\frac{q}{?(H^2-h^2)}log_{10}\frac{R}{r} \)

D : d. \(k=\frac{q}{1.36(H^2-h^2)} \)

The permeability of the aquifer is ________ if the drawdown is 4m, discharge is 40litres/sec, thickness of confined aquifer is 30m and the radius of the well is 0.1m. The radius of influence is taken as 245m.

Options

A : a. 36 m/day

B : b. 30 m/day

C : c. 26 m/day

D : d. 20 m/day

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