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Recent questions tagged hydraulics
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1
GATE2020CE112
Velocity of flow is proportional to the first power of hydraulic gradient in Darcy’s law. This law is applicable to laminar flow in porous media transitional flow in porous media turbulent flow in porous media laminar as well as turbulent flow in porous media
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Feb 28
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jothee
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2.7k
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gate2020ce1
hydraulics
waterresourcesengineering
0
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0
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2
GATE2020CE114
Uniform flow with velocity $U$ makes an angle $\theta$ with $y$axis, as shown in the figure The velocity potential $(\phi)$, is $\pm U(x\sin\theta+y\cos\theta)$ $\pm U(y\sin\thetax\cos\theta)$ $\pm U(x\sin\thetay\cos\theta)$ $\pm U(y\sin\theta+x\cos\theta)$
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Feb 28
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jothee
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2.7k
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gate2020ce1
hydraulics
waterresourcesengineering
uniformflow
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0
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3
GATE2020CE136
Water flows at the rate of $12\:m^3/s$ in a $6\:m$ wide rectangular channel. A hydraulic jump is formed in the channel at a point where the upstream depth is $30\:cm$ (just before the jump). Considering acceleration due to gravity as $9.81\:m/s^2$ and density of water as $1000\:kg/m^3$, the energy loss in the jump is $114.2\:kW$ $114.2\:MW$ $141.2\:h.p.$ $141.2\:J/s$
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Feb 28
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by
jothee
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2.7k
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gate2020ce1
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
4
GATE2020 CE212
Muskingum method is used in hydrologic reservoir routing hydrologic channel routing hydraulic channel routing hydraulic reservoir routing
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Feb 13
in
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by
jothee
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2.7k
points)
gate2020ce2
hydrology
hydraulics
waterresourcesengineering
muskingummethod
0
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0
answers
5
GATE2020 CE250
A hydraulic jump occurs in a triangular $\text{(Vshaped)}$ channel with side slopes $1:1$ (vertical to horizontal). The sequent depths are $0.5\: m$ and $1.5\: m$. The flow rate (in $m^3/s$, round off to two decimal places) in the channel is ________.
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Feb 13
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by
jothee
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2.7k
points)
gate2020ce2
numericalanswers
waterresourcesengineering
hydraulics
0
votes
0
answers
6
GATE2017 CE27
If a centrifugal pump has an impeller speed of $N$ (in rpm), discharge $Q$ (in $m^3/s$) and the total head $H$ (in $m$), the expression for the specific speed $N_s$ of the pump is given by $N_s = \dfrac{NQ^{0.5}}{H^{0.5}} \\$ $N_s = \dfrac{NQ^{0.5}}{H}\\$ $N_s = \dfrac{NQ^{0.5}}{H^{0.75}} \\$ $N_s = \dfrac{NQ}{H^{0.5}}$
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Aug 7, 2019
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by
gatecse
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3.9k
points)
gate2017ce2
hydraulics
waterresourcesengineering
specificspeedofpumps
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0
answers
7
GATE2017 CE246
A $1$ m wide rectangular channel carries a discharge of $2 \: m^3 /s$. The specific energydepth diagram is prepared for the channel. It is observed in this diagram that corresponding to a particular specific energy, the subcritical depth is twice the supercritical depth. The subcritical depth (in meters, up to two decimal places) is equal to ________
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Aug 7, 2019
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gatecse
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3.9k
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gate2017ce2
numericalanswers
waterresourcesengineering
hydraulics
channelhydraulicsenergydepthrelationships
0
votes
0
answers
8
GATE2017 CE249
Water is pumped at a steady uniform flow rate of $0.01 \: m^3/s$ through a horizontal smooth circular pipe of $100$ mm diameter. Given that the Reynolds number is $800$ and $g$ is $9.81 \: m/s^2$, the head loss (in meters, up to one decimal place) per km length due to friction would be _______
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Aug 7, 2019
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gatecse
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3.9k
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gate2017ce2
numericalanswers
hydraulics
waterresourcesengineering
uniformflow
0
votes
0
answers
9
GATE2019 CE1: 13
In a rectangular channel, the ratio of the velocity head to the flow depth for critical flow condition, is $\dfrac{1}{2}\\$ $\dfrac{2}{3} \\$ $\dfrac{3}{2} \\$ $2$
asked
Feb 14, 2019
in
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by
Arjun
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2.8k
points)
gate2019ce1
flowmeasurementinchannels
hydraulics
waterresourcesengineering
0
votes
0
answers
10
GATE2019 CE2: 27
Consider the hemispherical tank of radius $13 \: m$ as shown in the figure (not drawn to the scale). What is the valume of water (in $m^3$) when the depth of water at the centre of the tank is $6 \: m$? $78 \pi$ $156 \pi$ $396 \pi$ $468 \pi$
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Feb 12, 2019
in
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by
Arjun
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2.8k
points)
gate2019ce2
hydraulics
waterresourcesengineering
0
votes
0
answers
11
GATE2019 CE2: 47
A confined aquifer of $15 \: m$ constant thickness is sandwiched between two aquicludes as shown in the figure (not drawn to scale). The heads indicated by two piezometers P and Q are $55.2 \: m$ and $34.1 \: m$, respectively. The aquifer has a ... taken by the water to travel through the aquifer from piezometer location P to Q (in days, round off to $1$ decimal place) is ______
asked
Feb 12, 2019
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by
Arjun
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2.8k
points)
gate2019ce2
numericalanswers
hydraulics
waterresourcesengineering
0
votes
0
answers
12
GATE2019 CE2: 48
At the foot of a spillway, water flows at a depth of $23 \: cm$ with a velocity of $8.1 \: m/s$, as shown in the figure. The flow enters as an $M3$ profile in the long wide rectangular channel with bed slope $= \frac{1}{1800}$ and Manning's $n=0.015$ ... $y_1$ (in $m$, round off to $2$ decimal places) is _________
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Feb 12, 2019
in
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by
Arjun
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2.8k
points)
gate2019ce2
numericalanswers
flowmeasurementinchannels
hydraulics
waterresourcesengineering
0
votes
0
answers
13
GATE2016247
A $3$ m wide rectangular channel carries a flow of $6 \: m^3 /s$. The depth of flow at a section $P$ is $0.5 \: m$. A flattopped hump is to be placed at the downstream of the section $P$. Assume negligible energy loss between section $P$ and hump, and ... $m$) which will not change the depth of flow at section P is ________
asked
Mar 28, 2018
in
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by
Milicevic3306
(
11.9k
points)
gate2016ce2
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
14
GATE2016116
The prejump Froude Number for a particular flow in a horizontal rectangular channel is $10$. The ratio of sequent depths (i.e., postjump depth to prejump depth) is ______
asked
Mar 28, 2018
in
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by
Milicevic3306
(
11.9k
points)
gate2016ce1
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
15
GATE2016146
Seepage is occurring through a porous media shown in the figure. The hydraulic conductivity values $(k_1, k_2, k_3)$ are in m/day. The seepage discharge ($m^3/day$ per m) through the porous media at section $\color{red}{PQ}$ is $\dfrac{7}{12} \\$ $\dfrac{1}{2} \\$ $\dfrac{9}{16} \\$ $\dfrac{3}{4}$
asked
Mar 28, 2018
in
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by
Milicevic3306
(
11.9k
points)
gate2016ce1
geotechnicalengineering
soilmechanics
hydraulicconductivity
hydraulics
seepage
0
votes
0
answers
16
GATE2016149
A hydraulically efficient trapezoidal channel section has a uniform flow depth of $2$ m. The bed width (expressed in m) of the channel is ______
asked
Mar 28, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2016ce1
numericalanswers
trapezoidalchannel
waterresourcesengineering
hydraulics
0
votes
0
answers
17
GATE2017 CE1: 31
A $1$ m wide rectangular channel has a bed slope of $0.0016$ and the Manning’s roughness coefficient is $0.04$ Uniform flow takes the place in the channel at a flow depth of $0.5$m. At a particular section, gradually varied flow (GVF) is observed and the flow depth is measured as $0.6$ m. The GVF profile at section is classified as $S_1$ $S_2$ $M_1$ $M_2$
asked
Mar 26, 2018
in
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by
Milicevic3306
(
11.9k
points)
gate2017ce1
waterresourcesengineering
manning'scoefficient
hydraulics
graduallyvariedflow
0
votes
0
answers
18
GATE2015217
A nozzle is so shaped that the average flow velocity changes linearly from $1.5$ m/s at the beginning to $15$ m/s at its end in a distance of $0.375$m. The magnitude of the convective acceleration (in $m/s^2$ ) at the end of the nozzle is ________.
asked
Mar 26, 2018
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by
Milicevic3306
(
11.9k
points)
gate2015ce2
numericalanswers
hydraulics
waterresourcesengineering
nozzle
0
votes
0
answers
19
GATE2015218
A hydraulic jump takes place in a frictionless rectangular channel. The prejump depth is $y_p$. The alternate and sequent depths corresponding to $y_p$ are $y_a$ and $y_s$ respectively. The correct relationship among $y_p, \: y_a$ and $y_s$ is: $y_a < y_s < y_p$ $y_p < y_s < y_a$ $y_p < y_s = y_a$ $y_p = y_s = y_a$
asked
Mar 26, 2018
in
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by
Milicevic3306
(
11.9k
points)
gate2015ce2
hydraulics
waterresourcesengineering
hydraulicjump
0
votes
0
answers
20
GATE2015219
The relationship between porosity $(\eta)$, specific yield $(S_y)$ and specific retention $(S_\tau)$ of an unconfined aquifer is: $S_y+S_\tau = \eta$ $S_y+ \eta = S_\tau$ $S_\tau+ \eta = S_y$ $S_y+ S_\tau + \eta =1$
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2015ce2
hydraulics
waterresourcesengineering
0
votes
0
answers
21
GATE2015118
A circular pipe has a diameter of $1$ m, bed slope of $1$ in $1000$, and Manning's roughness coefficient equal to $0.01$. It may be treated as an open channel flow when it is flowing just full, i.e., the water level just touches the crest. The discharge in this condition is denoted ... by $Q_{\text{half}}$. The ratio $Q_{\text{full}} / Q_{\text{half}}$ is $1$ $\sqrt{2}$ $2$ $4$
asked
Mar 26, 2018
in
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by
Milicevic3306
(
11.9k
points)
gate2015ce1
waterresourcesengineering
hydraulics
flowmeasurementinchannelandpipes
0
votes
0
answers
22
GATE2015144
A hydraulic jump is formed in a $2$ m wide rectangular channel which is horizontal and frictionless. The postjump depth and velocity are $0.8$ , and $1$ m/s, respectively. The prejump velocity is ________ m/s. (use $g=10\:m/s^2$)
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2015ce1
numericalanswers
hydraulics
waterresourcesengineering
hydraulicjump
0
votes
0
answers
23
GATE2015145
A short reach of a $2$ m wide rectangular open channel has its bed level rising in the direction of flow at a slope of $1$ in $10000$. It carries a discharge of $4 m^3/s$ and its Manning's roughness coefficient is $0.01$. The flow in this reach is gradually varying. ... $dy/dx$, at this section is _______ (use $g=10\:m/s^2$).
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2015ce1
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
24
GATE2015146
The drag force, $F_D$, on a sphere kept in a uniform flow field, depends on the diameter of the sphere $D$; flow velocity, $V$, fluid density, $\rho$; and dynamic viscosity, $\mu$. Which of the following options represents the nondimensional parameters which could be used to analyze this ... $\dfrac{_{\rho}VD}{\mu} \\$ $\dfrac{F_D}{_{\rho}V^3D^3}$ and $\dfrac{\mu}{_{\rho}VD}$
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Mar 26, 2018
in
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by
Milicevic3306
(
11.9k
points)
gate2015ce1
hydraulics
waterresourcesengineering
dimensionalanalysis
0
votes
0
answers
25
GATE2014241
A horizontal nozzle of $30$ mm diameter discharges a steady jet of water into the atmosphere at a rate of $15$ litres per second. The diameter of inlet to the nozzle is $100$ mm. The jet impinges normal to a flat stationary plate held close to the nozzle end. ... considering the density of water as $1000 \: kg/m^3$, the force exerted by the jet (in N) on the plate is __________
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
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gate2014ce2
numericalanswers
hydraulics
waterresourcesengineering
0
votes
0
answers
26
GATE2014243
A rectangular channel of $2.5$ m width is carrying a discharge of $4 \: m^3/s$. Considering that acceleration due to gravity as $9.81 \: m/s^2$, the velocity of flow (in m/s) corresponding to the critical depth (at which the specific energy is minimum) is _________
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2014ce2
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
27
GATE2014217
A plane flow has velocity components $u=\dfrac{x}{T_1}$, $v=\dfrac{y}{T_2}$ and $w=0$ along $x,y$ and $z$ directions respectively, where $T_1( \neq 0)$ and $T_2 (\neq 0)$ are constants having the dimension of time. The given flow is incompressible if $T_1=T_2 \\$ $T_1= \dfrac{T_2}{2} \\$ $T_1=\dfrac{T_2}{2} \\$ $T_1=T_2$
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2014ce2
hydraulics
waterresourcesengineering
0
votes
0
answers
28
GATE2014143
A rectangular channel having a bed slope of $0.0001$, width $3.0$ m and Manning's coefficient $'n'$ $0.015$, carries a discharge of $1.0 \: m^3/s$. Given that the normal depth of flow range between $0.76$ m and $0.8$ m. The minimum width of ... is not exceeded along the reach upstream of the contraction, is approximately equal to (assume negligible losses) $0.64$ $0.84$ $1.04$ $1.24$
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2014ce1
waterresourcesengineering
hydraulics
manning'scoefficient
bedslope
0
votes
0
answers
29
GATE2014147
The potable water is prepared from turbid surface water by adopting the following treatment sequence. Turbid surface water $\rightarrow$ Coagulation $\rightarrow$ Flocculation $\rightarrow$ Sedimentation $\rightarrow$ Filtration $\rightarrow$ Disinfection ... $\rightarrow$ Coagulation $\rightarrow$ Disinfection $\rightarrow$ Filtration $\rightarrow$ Storage & Supply
asked
Mar 26, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2014ce1
hydraulics
waterresourcesengineering
turbidsurfacewater
0
votes
0
answers
30
GATE201415
With reference to the conventional Cartesian $(x,y)$ coordinate system, the vertices of a triangle have the following coordinates: $(x_1, y_1) = (1,0)$; $(x_2,y_2) = (2,2)$; and $(x_3,y_3)=(4,3)$. The area of the triangle is equal to $\dfrac{3}{2} \\$ $\dfrac{3}{4} \\$ $\dfrac{4}{5} \\$ $\dfrac{5}{2}$
asked
Mar 26, 2018
in
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Milicevic3306
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11.9k
points)
gate2014ce1
hydraulics
waterresourcesengineering
triangles
0
votes
0
answers
31
GATE201340
The normal depth in a wide rectangular channel is increased by $10 \%$. The percentage increase in the discharge in the channel is $20.1$ $15.4$ $10.5$ $17.2$
asked
Mar 26, 2018
in
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by
Milicevic3306
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11.9k
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gate2013ce
waterresourcesengineering
hydraulics
0
votes
0
answers
32
GATE201316
For subcritical flow in an open channel, the control section for gradually varied flow profiles is at the downstream end at the upstream end at both upstream and downstream ends at any immediate section
asked
Mar 26, 2018
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Others
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Milicevic3306
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11.9k
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gate2013ce
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
33
GATE201240
Group I contains parameters and GroupII lists methods/instruments. ... $P4, \: Q2, \: R3, \: S1$ $P1, \: Q3, \: R2, \: S4$
asked
Mar 25, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2012ce
hydraulics
waterresourcesengineering
velocitytriangles
0
votes
0
answers
34
GATE201239
The top width and the top depth of flow in a triangular channel were measured as $4$ m and $1$ m, respectively. The measured velocities on the centre line at the water surface, $0.2$ m and $0.8$ m below the surface are $0.7$ m/s, $0.6$ m/s and $0.4$ m/s, respectively. Using twopoint method of velocity measurement, the discharge (in $m^3/s$) in the channel is $1.4$ $1.2$ $1.0$ $0.8$
asked
Mar 25, 2018
in
Others
by
Milicevic3306
(
11.9k
points)
gate2012ce
hydraulics
waterresourcesengineering
velocitytriangles
0
votes
0
answers
35
GATE201217
A rectangular open channel of width $5.0$ m is carrying a discharge of $100 \: m^3/s$ The Froude number of the flow is $0.8$. The depth of flow (in m) in the channel is $4$ $5$ $16$ $20$
asked
Mar 25, 2018
in
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Milicevic3306
(
11.9k
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gate2012ce
hydraulics
waterresourcesengineering
flowmeasurementinchannel
0
votes
0
answers
36
GATE2018 CE2: 13
For a given discharge in an open channel, there are two depths which have the same specific energy. These two depths are known as alternate depths critical depths normal depths sequent depths
asked
Feb 17, 2018
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gatecse
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3.9k
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gate2018ce2
waterresourcesengineering
hydraulics
energydepthrelationships
0
votes
1
answer
37
GATE2018 CE1: 48
Rainfall depth over a watershed is monitored through six number of well distributed rain gauges. Gauged data are given below ... The Thiessen mean value (in mm, up to one decimal place) of the rainfall is _____
asked
Feb 17, 2018
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gatecse
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3.9k
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gate2018ce1
numericalanswers
hydraulics
waterresourcesengineering
0
votes
1
answer
38
GATE2018 CE1: 23
A $10$ m wide rectangular channel carries a discharge of $20 \: m^3/s$ under critical condition. Using $g=9.81 m/s^2$, the specific energy (in m, up to two decimal places) is _____
asked
Feb 17, 2018
in
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gatecse
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3.9k
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gate2018ce1
numericalanswers
hydraulics
waterresourcesengineering
channelsenergy
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