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Recent questions and answers in Hydraulics
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1
GATE Civil 2021 Set 2 | Question: 31
A rectangular open channel of $\text{6 m}$ width is carrying a discharge of $20 \text{ m$^{3}$/s}$. Consider the acceleration due to gravity as $ ... the given discharge will then be $\text{0.82 m}$ $\text{1.04 m}$ $\text{2.56 m}$ $\text{3.18 m}$
go_editor
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in
Hydraulics
Mar 1, 2021
by
go_editor
5.3k
points
gatecivil-2021-set2
flow-measurement-in-channels
rectangular-channels
0
votes
0
answers
2
GATE Civil 2021 Set 1 | Question: 9
If water is flowing at the same depth in most hydraulically efficient triangular and rectangular channel sections then the ratio of hydraulic radius of triangular section to that of rectangular section is $\frac{1}{\sqrt{2}}$ $\sqrt{2}$ $1$ $2$
Arjun
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in
Hydraulics
Feb 20, 2021
by
Arjun
11.6k
points
gatecivil-2021-set1
flow-measurements-channels
triangular-rectangular-hydraulics
0
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0
answers
3
GATE Civil 2021 Set 1 | Question: 32
A fluid flowing steadily in a circular pipe of radius $\text{R}$ has a velocity that is everywhere parallel to the axis (centerline) of the pipe. The velocity distribution along the radial direction is $V_{r}=U\left ( 1-\dfrac{r^{2}}{R^{2}} \right )$, where $\text{r}$ ... fluid in the pipe is $\frac{U}{2}$ $\frac{U}{3}$ $\frac{U}{4}$ $\left(\frac{5}{6}\right)U$
Arjun
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in
Hydraulics
Feb 20, 2021
by
Arjun
11.6k
points
gatecivil-2021-set1
flow-measurement-in-pipe
0
votes
0
answers
4
GATE2020-CE-1-14
Uniform flow with velocity $U$ makes an angle $\theta$ with $y$-axis, as shown in the figure The velocity potential $(\phi)$, is $\pm U(x\sin\theta+y\cos\theta)$ $\pm U(y\sin\theta-x\cos\theta)$ $\pm U(x\sin\theta-y\cos\theta)$ $\pm U(y\sin\theta+x\cos\theta)$
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in
Hydraulics
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
uniform-flow
0
votes
0
answers
5
GATE2020-CE-1-24
A $4\:m$ wide rectangular channel carries $6\:m^3/s$ of water. The Manning’s ‘$n$’ of the open channel is $0.02$. Considering $g=9.81\:m/s^2$, the critical velocity of flow (in $m/s$, round off to two decimal places ) in the channel, is ____________.
go_editor
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in
Hydraulics
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
flow-measurement-in-channels
numerical-answers
0
votes
0
answers
6
GATE2020-CE-1-36
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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in
Hydraulics
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
7
GATE2020-CE-1-51
A circular water tank of $2\:m$ diameter has a circular orifice of diameter $0.1\:m$ at the bottom. Water enters the tank steadily at a flow rate of $20\:litre/s$ and escapes through the orifice. The coefficient of discharge of the orifice is $0.8$. ... losses. The height of the water level (in $m$, round off to two decimal places) in the tank at the steady state, is ______.
go_editor
asked
in
Hydraulics
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
numerical-answers
friction-loss
flow-measurements
0
votes
0
answers
8
GATE2020 CE-2-50
A hydraulic jump occurs in a triangular $\text{(V-shaped)}$ 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 ________.
go_editor
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in
Hydraulics
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
numerical-answers
hydraulic-jump
0
votes
0
answers
9
GATE2017 CE-2-7
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 $N_s = \dfrac{NQ^{0.5}}{H^{0.5}} \\$ $N_s = \dfrac{NQ^{0.5}}{H}\\$ $N_s = \dfrac{NQ^{0.5}}{H^{0.75}} \\$ $N_s = \dfrac{NQ}{H^{0.5}}$
gatecse
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Hydraulics
Aug 7, 2019
by
gatecse
4.0k
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gate2017-ce-2
hydraulics
water-resources-engineering
specific-speed-of-pumps
0
votes
0
answers
10
GATE2017 CE-2-49
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 _______
gatecse
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in
Hydraulics
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
hydraulics
water-resources-engineering
uniform-flow
0
votes
0
answers
11
GATE2019 CE-1: 13
In a rectangular channel, the ratio of the velocity head to the flow depth for critical flow condition, is $\dfrac{1}{2}\\$ $\dfrac{2}{3} \\$ $\dfrac{3}{2} \\$ $2$
Arjun
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in
Hydraulics
Feb 14, 2019
by
Arjun
11.6k
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gate2019-ce-1
flow-measurement-in-channels
hydraulics
water-resources-engineering
0
votes
0
answers
12
GATE2019 CE-2: 27
Consider the hemi-spherical 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 $6 \: m$? $78 \pi$ $156 \pi$ $396 \pi$ $468 \pi$
Arjun
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in
Hydraulics
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
hydraulics
water-resources-engineering
gradually-varied-flow
hemi-spherical-flow
0
votes
0
answers
13
GATE2019 CE-2: 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 $M-3$ 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 _________
Arjun
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in
Hydraulics
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
flow-measurement-in-channels
hydraulics
water-resources-engineering
hydraulic-jump
0
votes
0
answers
14
GATE2016-2-47
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 flat-topped 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 ________
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Mar 28, 2018
by
Milicevic3306
11.9k
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gate2016-ce-2
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
15
GATE2016-1-16
The pre-jump Froude Number for a particular flow in a horizontal rectangular channel is $10$. The ratio of sequent depths (i.e., post-jump depth to pre-jump depth) is ______
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Hydraulics
Mar 28, 2018
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11.9k
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gate2016-ce-1
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
16
GATE2016-1-46
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 $\dfrac{7}{12} \\$ $\dfrac{1}{2} \\$ $\dfrac{9}{16} \\$ $\dfrac{3}{4}$
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Mar 28, 2018
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Milicevic3306
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gate2016-ce-1
water-resources-engineering
hydraulic-conductivity
hydraulics
discharge-and-seepage-velocity
0
votes
0
answers
17
GATE2016-1-47
A $4$ m wide rectangular channel, having bed slope of $0.001$ carries a discharge of $16 \: m^3/s$. Considering Manning’s roughness coefficient $=0.012$ and $g=10 \: m/s^2$, the category of the channel slope is horizontal mild critical steep
Milicevic3306
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Hydraulics
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
mannings-coefficient
water-resources-engineering
hydraulics
flow-measurement-in-channels
rectangular-channels
0
votes
0
answers
18
GATE2016-1-49
A hydraulically efficient trapezoidal channel section has a uniform flow depth of $2$ m. The bed width (expressed in m) of the channel is ______
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Hydraulics
Mar 28, 2018
by
Milicevic3306
11.9k
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gate2016-ce-1
numerical-answers
trapezoidal-channel
water-resources-engineering
hydraulics
flow-measurement-in-channels
0
votes
0
answers
19
GATE2017 CE-1: 15
Which one of the following is NOT present in the acid rain? $HNO_3$ $H_2SO_4$ $H_2CO_3$ $CH_3COOH$
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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2017-ce-1
acid-rain
water-resources-engineering
hydraulics
0
votes
0
answers
20
GATE2017 CE-1: 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 $S_1$ $S_2$ $M_1$ $M_2$
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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2017-ce-1
water-resources-engineering
mannings-coefficient
hydraulics
gradually-varied-flow
flow-measurement-in-channels
0
votes
0
answers
21
GATE2017 CE-1: 48
A sluice gate used to control the flow in a horizontal channel of unit width is shown in the figure. It is observed that the depth of flow is $1.0$ m upstream of the gate, while the depth is $0.2$ m downstream of the gate. Assuming a smooth flow transition ... gravity $10 \: m/s^2$, the discharge (in $m^3/s$, up to two decimal places) passing under the sluice gate is ___________
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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
numerical-answers
water-resources-engineering
hydraulics
flow-measurement-in-channels
0
votes
0
answers
22
GATE2015-2-16
The relationship between the length scale ratio $(L_r)$ and the velocity scale ratio $(V_r)$ in the hydraulic models, in which Froude dynamic similarity is maintained is: $V_r=L_r \\$ $L_r=\sqrt{V_r} \\$ $V_r= L_r^{1.5} \\$ $V_r=\sqrt{L_r}$
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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2015-ce-2
water-resources-engineering
hydraulics
energy-depth-relationships
hydraulic-models
0
votes
0
answers
23
GATE2015-2-17
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 ________.
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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2015-ce-2
numerical-answers
hydraulics
water-resources-engineering
nozzle
0
votes
0
answers
24
GATE2015-2-18
A hydraulic jump takes place in a frictionless rectangular channel. The pre-jump 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: $y_a < y_s < y_p$ $y_p < y_s < y_a$ $y_p < y_s = y_a$ $y_p = y_s = y_a$
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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2015-ce-2
hydraulics
water-resources-engineering
hydraulic-jump
0
votes
0
answers
25
GATE2015-1-44
A hydraulic jump is formed in a $2$ m wide rectangular channel which is horizontal and frictionless. The post-jump depth and velocity are $0.8$ , and $1$ m/s, respectively. The pre-jump velocity is ________ m/s. (use $g=10\:m/s^2$)
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Hydraulics
Mar 26, 2018
by
Milicevic3306
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gate2015-ce-1
numerical-answers
hydraulics
water-resources-engineering
hydraulic-jump
0
votes
0
answers
26
GATE2015-1-45
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 $g=10\:m/s^2$).
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Hydraulics
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by
Milicevic3306
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gate2015-ce-1
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
27
GATE2014-2-43
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 _________
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Milicevic3306
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gate2014-ce-2
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
28
GATE2014-2-41
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 __________
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gate2014-ce-2
numerical-answers
hydraulics
water-resources-engineering
0
votes
0
answers
29
GATE2014-1-47
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
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Hydraulics
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by
Milicevic3306
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gate2014-ce-1
hydraulics
water-resources-engineering
turbid-surface-water
0
votes
0
answers
30
GATE2014-1-43
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) $0.64$ $0.84$ $1.04$ $1.24$
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Hydraulics
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Milicevic3306
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gate2014-ce-1
water-resources-engineering
hydraulics
mannings-coefficient
flow-measurement-in-channels
0
votes
0
answers
31
GATE Civil 2013 | Question: 40
The normal depth in a wide rectangular channel is increased by $10 \%$. The percentage increase in the discharge in the channel is $20.1$ $15.4$ $10.5$ $17.2$
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Milicevic3306
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gate2013-ce
water-resources-engineering
hydraulics
flow-measurement-in-channels
0
votes
0
answers
32
GATE Civil 2013 | Question: 16
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
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gate2013-ce
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water-resources-engineering
flow-measurement-in-channels
0
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0
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33
GATE Civil 2012 | Question: 40
Group I contains parameters and Group-II lists methods/instruments. ... $P-4, \: Q-2, \: R-3, \: S-1$ $P-1, \: Q-3, \: R-2, \: S-4$
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Hydraulics
Mar 25, 2018
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Milicevic3306
11.9k
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gate2012-ce
hydraulics
water-resources-engineering
velocity-triangles
0
votes
0
answers
34
GATE Civil 2012 | Question: 39
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, $0.6$ ... Using two-point method of velocity measurement, the discharge (in $m^3/s$) in the channel is $1.4$ $1.2$ $1.0$ $0.8$
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Hydraulics
Mar 25, 2018
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gate2012-ce
hydraulics
water-resources-engineering
velocity-triangles
0
votes
0
answers
35
GATE Civil 2012 | Question: 17
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 $4$ $5$ $16$ $20$
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Hydraulics
Mar 25, 2018
by
Milicevic3306
11.9k
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gate2012-ce
hydraulics
water-resources-engineering
flow-measurement-in-channel
0
votes
1
answer
36
GATE2018 CE-1: 50
In a laboratory, a flow experiment is performed over a hydraulic structure. The measured values of discharge and velocity are $\text{0.05}$ $m^{3}/s$ and $\text{0.25}$ $m/s$, respectively. If the full scale structure ($30$ times bigger) is subjected to a discharge of ${270}$ $m^{3}/s$, then the time scale (model to full scale) value (up to two decimal places) is _______
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Hydraulics
Feb 18, 2018
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pushpendratiwari1011
1.0k
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gate2018-ce-1
dimensional-analysis
hydraulic-similitude
numerical-answers
water-resources-engineering
0
votes
1
answer
37
GATE2018 CE-1: 39
Variation of water depth $(y)$ in a gradually varied open channel flow is given by the first order differential equation $ \dfrac{dy}{dx} = \dfrac{1-e^{-\frac{10}{3} \ln(y)}}{250 - 45e^{-3\ln(y)}}$ ... in m, up to three decimal places) of flow at a downstream section at $x=1$ m from one calculation step of Single Step Euler Method is ___________
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Hydraulics
Feb 18, 2018
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pushpendratiwari1011
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gate2018-ce-1
numerical-answers
water-resource-engineering
hydraulics
flow-measurement-in-channels
eulers-method
0
votes
1
answer
38
GATE2018 CE-1: 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 _____
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Hydraulics
Feb 18, 2018
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gate2018-ce-1
numerical-answers
hydraulics
water-resources-engineering
channels-energy
0
votes
0
answers
39
GATE2018 CE-2: 34
In a $5$ m wide rectangular channel, the velocity $u$ distribution in the vertical direction $y$ is given by $u=1.25 y^{\frac{1}{6}}$. The distance $y$ is measured from the channel bed. If the flow depth is $2$ m, the discharge per unit width of the channel is $2.40 \: m^3/s/m$ $2.80 \: m^3/s/m$ $3.27 \: m^3/s/m$ $12.02 \: m^3/s/m$
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Hydraulics
Feb 17, 2018
by
gatecse
4.0k
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gate2018-ce-2
water-resources-engineering
rectangular-channels
hydraulics
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