GATE Civil Engineering
Ask us anything
Toggle navigation
GATE Civil Q&A
Email or Username
Password
Remember
Login
Register

I forgot my password
Activity
Questions
Tags
Subjects
Users
Ask
Blogs
New Blog
Exams
Recent questions tagged hydraulics
0
votes
0
answers
1
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 $114.2\:kW$ $114.2\:MW$ $141.2\:h.p.$ $141.2\:J/s$
asked
Feb 28, 2020
in
Hydraulics
by
jothee
(
5.2k
points)
gate2020ce1
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
2
GATE2020 CE212
Muskingum method is used in hydrologic reservoir routing hydrologic channel routing hydraulic channel routing hydraulic reservoir routing
asked
Feb 13, 2020
in
Hydrology
by
jothee
(
5.2k
points)
gate2020ce2
hydrology
hydraulics
waterresourcesengineering
muskingummethod
0
votes
0
answers
3
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 $N_s = \dfrac{NQ^{0.5}}{H^{0.5}} \\$ $N_s = \dfrac{NQ^{0.5}}{H}\\$ $N_s = \dfrac{NQ^{0.5}}{H^{0.75}} \\$ $N_s = \dfrac{NQ}{H^{0.5}}$
asked
Aug 7, 2019
in
Hydraulics
by
gatecse
(
4k
points)
gate2017ce2
hydraulics
waterresourcesengineering
specificspeedofpumps
0
votes
0
answers
4
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 ________
asked
Aug 7, 2019
in
Water Resources Engineering
by
gatecse
(
4k
points)
gate2017ce2
numericalanswers
waterresourcesengineering
hydraulics
channelhydraulicsenergydepthrelationships
0
votes
0
answers
5
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 _______
asked
Aug 7, 2019
in
Hydraulics
by
gatecse
(
4k
points)
gate2017ce2
numericalanswers
hydraulics
waterresourcesengineering
uniformflow
0
votes
0
answers
6
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
Hydraulics
by
Arjun
(
8.7k
points)
gate2019ce1
flowmeasurementinchannels
hydraulics
waterresourcesengineering
0
votes
0
answers
7
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 $6 \: m$? $78 \pi$ $156 \pi$ $396 \pi$ $468 \pi$
asked
Feb 12, 2019
in
Hydraulics
by
Arjun
(
8.7k
points)
gate2019ce2
hydraulics
waterresourcesengineering
graduallyvariedflow
hemisphericalflow
0
votes
0
answers
8
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 _________
asked
Feb 12, 2019
in
Hydraulics
by
Arjun
(
8.7k
points)
gate2019ce2
numericalanswers
flowmeasurementinchannels
hydraulics
waterresourcesengineering
hydraulicjump
0
votes
0
answers
9
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2016ce2
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
10
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2016ce1
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
11
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2016ce1
waterresourcesengineering
hydraulicconductivity
hydraulics
dischargeandseepagevelocity
0
votes
0
answers
12
GATE2016147
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
asked
Mar 28, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2016ce1
manningscoefficient
waterresourcesengineering
hydraulics
flowmeasurementinchannels
rectangularchannels
0
votes
0
answers
13
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2016ce1
numericalanswers
trapezoidalchannel
waterresourcesengineering
hydraulics
flowmeasurementinchannels
0
votes
0
answers
14
GATE2017 CE1: 15
Which one of the following is NOT present in the acid rain? $HNO_3$ $H_2SO_4$ $H_2CO_3$ $CH_3COOH$
asked
Mar 26, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2017ce1
acidrain
waterresourcesengineering
hydraulics
0
votes
0
answers
15
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2017ce1
waterresourcesengineering
manningscoefficient
hydraulics
graduallyvariedflow
flowmeasurementinchannels
0
votes
0
answers
16
GATE2017 CE1: 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 ___________
asked
Mar 26, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2017ce1
numericalanswers
waterresourcesengineering
hydraulics
flowmeasurementinchannels
0
votes
0
answers
17
GATE2015216
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: $V_r=L_r \\$ $L_r=\sqrt{V_r} \\$ $V_r= L_r^{1.5} \\$ $V_r=\sqrt{L_r}$
asked
Mar 26, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2015ce2
waterresourcesengineering
hydraulics
energydepthrelationships
hydraulicmodels
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
in
Hydraulics
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2015ce2
hydraulics
waterresourcesengineering
hydraulicjump
0
votes
0
answers
20
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
Water Resources Engineering
by
Milicevic3306
(
11.9k
points)
gate2015ce1
waterresourcesengineering
hydraulics
flowmeasurementinchannelandpipes
0
votes
0
answers
21
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2015ce1
numericalanswers
hydraulics
waterresourcesengineering
hydraulicjump
0
votes
0
answers
22
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2015ce1
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
23
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2014ce2
numericalanswers
hydraulics
waterresourcesengineering
0
votes
0
answers
24
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2014ce2
numericalanswers
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
25
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2014ce1
waterresourcesengineering
hydraulics
manningscoefficient
flowmeasurementinchannels
0
votes
0
answers
26
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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2014ce1
hydraulics
waterresourcesengineering
turbidsurfacewater
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 $20.1$ $15.4$ $10.5$ $17.2$
asked
Mar 26, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2013ce
waterresourcesengineering
hydraulics
flowmeasurementinchannels
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
asked
Mar 26, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2013ce
hydraulics
waterresourcesengineering
flowmeasurementinchannels
0
votes
0
answers
29
GATE Civil 2012  Question: 40
Group I contains parameters and GroupII lists methods/instruments. ... $P4, \: Q2, \: R3, \: S1$ $P1, \: Q3, \: R2, \: S4$
asked
Mar 25, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2012ce
hydraulics
waterresourcesengineering
velocitytriangles
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 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
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2012ce
hydraulics
waterresourcesengineering
velocitytriangles
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 $4$ $5$ $16$ $20$
asked
Mar 25, 2018
in
Hydraulics
by
Milicevic3306
(
11.9k
points)
gate2012ce
hydraulics
waterresourcesengineering
flowmeasurementinchannel
0
votes
0
answers
32
GATE2018 CE2: 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 $2.40 \: m^3/s/m$ $2.80 \: m^3/s/m$ $3.27 \: m^3/s/m$ $12.02 \: m^3/s/m$
asked
Feb 17, 2018
in
Hydraulics
by
gatecse
(
4k
points)
gate2018ce2
waterresourcesengineering
rectangularchannels
hydraulics
0
votes
0
answers
33
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
in
Water Resources Engineering
by
gatecse
(
4k
points)
gate2018ce2
waterresourcesengineering
hydraulics
energydepthrelationships
0
votes
1
answer
34
GATE2018 CE1: 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{1e^{\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 ___________
asked
Feb 17, 2018
in
Hydraulics
by
gatecse
(
4k
points)
gate2018ce1
numericalanswers
waterresourceengineering
hydraulics
flowmeasurementinchannels
eulersmethod
0
votes
1
answer
35
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
Hydraulics
by
gatecse
(
4k
points)
gate2018ce1
numericalanswers
hydraulics
waterresourcesengineering
channelsenergy
To see more, click for the
full list of questions
or
popular tags
.
Welcome to GATE Civil Q&A, where you can ask questions and receive answers from other members of the community.
Top Users
Sep 2021
1,173
questions
139
answers
26
comments
44,384
users