## User: saxena_archit

saxena_archit •

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#### Academic profile

#### Posts by saxena_archit

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Answer:
A: Well Loss in Ground Water

... **Well Loss:**
1. When water is pumped out of a well, the total drawdown caused includes not only that of the logarithmic drawdown curve at the well face, but also drawdown caused by flow through well screen and axial movement within the well.
2. The latter drawdown is called well loss. Since turbu ...

written 3 months ago by
saxena_archit •

**150**• updated 11 weeks ago by Sanket Shingote ♦♦**250**1

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Answer:
A: Numerical on Ground Water

...
d = 3cm = 0.3m r = 0.15m
H =20m
$S_2$ = 0.5 at $r_2$ = 100m
$H_2$ = 20 – 0.5 = 19.5
$S_1$ = 1 m at $r_1$ = 30m
$h_1$ = 2 – 1 = 19m
$Q=5000\ lit/min=\frac{5000\times10^{-3}}{60}=0.0833\ m^3/sec$
$$Q=\frac{1.36k(H^2-h^2)}{\log\left(\frac{r_2}{r_1}\right)}$$
$$0.0833=\frac{1.36k(19.5^2-1 ...

written 3 months ago by
saxena_archit •

**150**• updated 3 months ago by Sanket Shingote ♦♦**250**1

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Answer:
A: Numerical on Ground Water

...
$$H=75$$
$$Q=1.40\ m^3/min=\frac{1.40}{60}=0.0233\ m^3/s$$
S1 = 4m h1 = H – s1 = 75 – 4 = 71 at r1 = 4
S2 = 2m h2 = H – s2 = 75 – 2 = 73 at r2 = 14
$$Q=\frac{1.36k(H^2-h_1^2)}{log\frac{R}{r_1}}=\frac{1.36k(H^2-h^2)}{log\frac{R}{r_2}}$$
$$\frac{(75^2-71^2)}{log\frac{R}{r_1 ...

written 3 months ago by
saxena_archit •

**150**• updated 3 months ago by Sanket Shingote ♦♦**250**1

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... Darcy’s Law: The percolation of water through soil was first studied by Darcy who demonstrated experimentally that for laminar flow conditions in a saturated soil,
**Statement:** The flow rate through porous media is proportional to the head loss , total cross-sectional area of soil mass perpendic ...

written 3 months ago by
saxena_archit •

**150**• updated 11 weeks ago by Sanket Shingote ♦♦**250**1

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... 1. The coefficient of permeability is defined as the velocity of flow which will occur through the total cross-sectional area of the soil under a unit hydraulic gradient.
2. The coefficient of transmissibility is defined as the rate of flow water through vertical strip of aquifer of unit width and e ...

written 3 months ago by
saxena_archit •

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Answer:
A: Zones of Underground Water

... The various zones are as follows:
a) Zone of Aeration, b) Zone of saturation
- Zone of Aeration: -
1. The zone of aeration is layer of Earth where the pores and cracks are filled with air and water. It is sub-earthen region that exists between the Earth's surface and water table.
2. This zone ...

written 3 months ago by
saxena_archit •

**150**1

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Answer:
A: Occurence of Ground Water

... The possibilities of occurrence of ground water mainly depends upon two geological factors
1. The porosity of rocks:
- The porosity of the rock, which is the major geological criteria for occurrence of ground water, is a quantitative measurement of the voids in the rocks. It is generally defined a ...

written 3 months ago by
saxena_archit •

**150**• updated 11 weeks ago by Sanket Shingote ♦♦**250**1

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Answer:
A: Ground Water Resources

... **Definition**
Ground water is the underground water that occurs in the saturated zone of variable thickness and depth, below the earth’s surface. Cracks and pores in the existing rocks and unconsolidated crystal layers, make up a large underground reservoir, where part of precipitation is stored.
...

written 3 months ago by
saxena_archit •

**150**1

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Answer:
A: Numerical 2) on Hydrology

... Given, $T_0$=4 hrs, $t_0$=12 hrs
Since $t_0$ is an integral multiple of T0 ( i.e. $t_0$ = 3$T_0$ ), the desired hydrograph can be obtained by taking the sum of the ordinates of three unit hydrographs of 4-hours duration, each lagging from the other by 4-hours, and dividing the sum by 3.
![enter im ...

written 3 months ago by
saxena_archit •

**150**1

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Answer:
A: Numerical 1) on Hydrology

... ![enter image description here][1]
$$\text{Direct runoff (D.R.O)}=\frac{0.36\sum O\times t}{A}=\frac{0.36\times83\times3}{50}=1.79\ cm$$
[1]: https://i.imgur.com/912vLH8.png ...

written 3 months ago by
saxena_archit •

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