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Recent questions tagged hydraulics
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1
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 $114.2\:kW$ $114.2\:MW$ $141.2\:h.p.$ $141.2\:J/s$
go_editor
asked
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
2
GATE2020 CE-2-12
Muskingum method is used in hydrologic reservoir routing hydrologic channel routing hydraulic channel routing hydraulic reservoir routing
go_editor
asked
in
Hydrology
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
hydrology
hydraulics
water-resources-engineering
muskingum-method
0
votes
0
answers
3
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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in
Hydraulics
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
hydraulics
water-resources-engineering
specific-speed-of-pumps
0
votes
0
answers
4
GATE2017 CE-2-46
A $1$ m wide rectangular channel carries a discharge of $2 \: m^3 /s$. The specific energy-depth 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 ________
gatecse
asked
in
Water Resources Engineering
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
water-resources-engineering
hydraulics
channel-hydraulics-energy-depth-relationships
0
votes
0
answers
5
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
6
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
asked
in
Hydraulics
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
flow-measurement-in-channels
hydraulics
water-resources-engineering
0
votes
0
answers
7
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
asked
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
8
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
asked
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
9
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 ________
Milicevic3306
asked
in
Hydraulics
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
10
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 ______
Milicevic3306
asked
in
Hydraulics
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
11
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 $\dfrac{7}{12} \\$ $\dfrac{1}{2} \\$ $\dfrac{9}{16} \\$ $\dfrac{3}{4}$
Milicevic3306
asked
in
Hydraulics
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
water-resources-engineering
hydraulic-conductivity
hydraulics
discharge-and-seepage-velocity
0
votes
0
answers
12
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
asked
in
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
13
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 ______
Milicevic3306
asked
in
Hydraulics
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-1
numerical-answers
trapezoidal-channel
water-resources-engineering
hydraulics
flow-measurement-in-channels
0
votes
0
answers
14
GATE2017 CE-1: 15
Which one of the following is NOT present in the acid rain? $HNO_3$ $H_2SO_4$ $H_2CO_3$ $CH_3COOH$
Milicevic3306
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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
acid-rain
water-resources-engineering
hydraulics
0
votes
0
answers
15
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 $S_1$ $S_2$ $M_1$ $M_2$
Milicevic3306
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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
water-resources-engineering
mannings-coefficient
hydraulics
gradually-varied-flow
flow-measurement-in-channels
0
votes
0
answers
16
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 ___________
Milicevic3306
asked
in
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
17
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: $V_r=L_r \\$ $L_r=\sqrt{V_r} \\$ $V_r= L_r^{1.5} \\$ $V_r=\sqrt{L_r}$
Milicevic3306
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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-2
water-resources-engineering
hydraulics
energy-depth-relationships
hydraulic-models
0
votes
0
answers
18
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 ________.
Milicevic3306
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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-2
numerical-answers
hydraulics
water-resources-engineering
nozzle
0
votes
0
answers
19
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: $y_a < y_s < y_p$ $y_p < y_s < y_a$ $y_p < y_s = y_a$ $y_p = y_s = y_a$
Milicevic3306
asked
in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-2
hydraulics
water-resources-engineering
hydraulic-jump
0
votes
0
answers
20
GATE2015-1-18
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 $1$ $\sqrt{2}$ $2$ $4$
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in
Water Resources Engineering
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-1
water-resources-engineering
hydraulics
flow-measurement-in-channel-and-pipes
0
votes
0
answers
21
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 $g=10\:m/s^2$)
Milicevic3306
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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-1
numerical-answers
hydraulics
water-resources-engineering
hydraulic-jump
0
votes
0
answers
22
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 $g=10\:m/s^2$).
Milicevic3306
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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-1
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
23
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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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2014-ce-2
numerical-answers
hydraulics
water-resources-engineering
0
votes
0
answers
24
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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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2014-ce-2
numerical-answers
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
25
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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in
Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2014-ce-1
water-resources-engineering
hydraulics
mannings-coefficient
flow-measurement-in-channels
0
votes
0
answers
26
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
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2014-ce-1
hydraulics
water-resources-engineering
turbid-surface-water
0
votes
0
answers
27
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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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2013-ce
water-resources-engineering
hydraulics
flow-measurement-in-channels
0
votes
0
answers
28
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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Hydraulics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2013-ce
hydraulics
water-resources-engineering
flow-measurement-in-channels
0
votes
0
answers
29
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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in
Hydraulics
Mar 25, 2018
by
Milicevic3306
11.9k
points
gate2012-ce
hydraulics
water-resources-engineering
velocity-triangles
0
votes
0
answers
30
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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in
Hydraulics
Mar 25, 2018
by
Milicevic3306
11.9k
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gate2012-ce
hydraulics
water-resources-engineering
velocity-triangles
0
votes
0
answers
31
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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in
Hydraulics
Mar 25, 2018
by
Milicevic3306
11.9k
points
gate2012-ce
hydraulics
water-resources-engineering
flow-measurement-in-channel
0
votes
0
answers
32
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 $2.40 \: m^3/s/m$ $2.80 \: m^3/s/m$ $3.27 \: m^3/s/m$ $12.02 \: m^3/s/m$
gatecse
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Hydraulics
Feb 17, 2018
by
gatecse
4.0k
points
gate2018-ce-2
water-resources-engineering
rectangular-channels
hydraulics
0
votes
0
answers
33
GATE2018 CE-2: 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
gatecse
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in
Water Resources Engineering
Feb 17, 2018
by
gatecse
4.0k
points
gate2018-ce-2
water-resources-engineering
hydraulics
energy-depth-relationships
0
votes
1
answer
34
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 ___________
gatecse
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Hydraulics
Feb 17, 2018
by
gatecse
4.0k
points
gate2018-ce-1
numerical-answers
water-resource-engineering
hydraulics
flow-measurement-in-channels
eulers-method
0
votes
1
answer
35
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 _____
gatecse
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in
Hydraulics
Feb 17, 2018
by
gatecse
4.0k
points
gate2018-ce-1
numerical-answers
hydraulics
water-resources-engineering
channels-energy
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