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Recent questions tagged water-resources-engineering
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1
GATE2020-CE-1-17
An amount of $35.67\:mg\:HCl$ is added to distilled water and the total solution volume is made to one litre. The atomic weights of $H$ and $Cl$ are $1$ and $35.5$, respectively. Neglecting the dissociation of water, the pH of the solution, is $3.50$ $3.01$ $2.50$ $2.01$
go_editor
asked
in
Water Resources Engineering
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
water-resources-engineering
water-and-waste-water
0
votes
0
answers
2
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
3
GATE2020-CE-1-37
A water supply scheme transports $10\:MLD$ (MIllion Litres per Day) water through a $450\:mm$ diameter pipeline for a distance of $2.5\:km$. A chlorine dose of $3.50\:mg/litre$ is applied at the starting point of the pipeline to attain a certain level of disinfection at ... the chlorine dose (in $mg/litre$) to be applied at the starting point should be $3.95$ $4.40$ $4.75$ $5.55$
go_editor
asked
in
Fluid Mechanics
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
fluid-mechanics
water-resources-engineering
flow-in-pipes
0
votes
0
answers
4
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
5
GATE2020 CE-2-13
Superpassage is a canal cross-drainage structure in which natural stream water flows with free surface below a canal natural stream water flows under pressure below a canal canal water flows with free surface below a natural stream canal water flows under pressure below a natural stream
go_editor
asked
in
Irrigation
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
irrigation
water-resources-engineering
cross-drainage-structures
canals
0
votes
0
answers
6
GATE2020 CE-2-14
A triangular direct runoff hydrograph due to a storm has a time base of $90$ hours. The peak flow of $60\: m^3/s$ occurs at $20$ hours from the start of the storm. The area of catchment is $300\: km^2$. The rainfall excess of the storm (in cm), is $2.00$ $3.24$ $5.40$ $6.48$
go_editor
asked
in
Hydrology
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
hydrology
water-resources-engineering
hydrographs
surface-runoff-models
0
votes
0
answers
7
GATE2020 CE-2-15
The velocity components in the $x$ and $y$ directions for an incompressible flow are given as $u = (-5 + 6x)$ and $v = -(9+6y)$, respectively. The equation of the streamline is $(-5+6x)-(9+6y) = \text{constant}$ $\dfrac{-5+6x}{9+6y}= \text{constant}$ $(-5+6x)(9+6y) = \text{constant}$ $\dfrac{9+6y}{-5+6x}= \text{constant}$
go_editor
asked
in
Fluid Mechanics
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
water-resources-engineering
flow-in-pipes
incompressible-flow
0
votes
0
answers
8
GATE2020 CE-2-37
Alkalinity of water, in equivalent/litre (eq/litre), is given by ${\{HC{O_3}^-}\} + 2{\{C{O_3}^{2-}}\} + {\{OH^-\}}\ -\ {\{H^+\}}$ where, $\{\ \ \}$ represents concentration in $\text{mol/litre}$ ... and $H^+$ are NEGLECTED, the alkalinity of the water sample $\text{(in mg/litre as}\: CaCO_3),$ is $130.4$ $100.0$ $50.0$ $65.2$
go_editor
asked
in
Water Resources Engineering
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
water-resources-engineering
alkalinity-of-water-sample
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
asked
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
10
GATE2017 CE-2-23
During a storm event in a certain period, the rainfall intensity is $3.5$ cm/hour and the $\Phi$-index is $1.5$ cm/hour. The intensity of effective rainfall (in cm/hour, up to one decimal place) for this period is ________
gatecse
asked
in
Hydrology
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
water-resources-engineering
hydrology
hydrographs
surface-runoff-models
0
votes
0
answers
11
GATE2017 CE-2-24
The infiltration capacity of a soil follows the Horton's exponential model, $f=c_1+c_2e^{-kt}$. During an experiment, the initial infiltration capacity was observed to be $200$ mm/h. After a long time, the infiltration capacity was reduced $25$ mm/h. If the filtration capacity ... $k$ (in $h^{-1}$, up to two decimal places) is ________
gatecse
asked
in
Hydrology
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
water-resources-engineering
hydrology
infiltration
0
votes
0
answers
12
GATE2017 CE-2-45
The figure shows a U-tube having a $5 \: mm \times 5 mm$ square cross-section filled with mercury (specific gravity $13.6$) up to a height of $20 $ cm in each limb (open to atmosphere) If $5 \: cm^3$ of water is added to the right limb, the new height (in cm, up to two decimal places) of mercury in the LEFT limb will be ________
gatecse
asked
in
Fluid Mechanics
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
water-resources-engineering
fluid-mechanics
fluid-statics
0
votes
0
answers
13
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
14
GATE2017 CE-2-47
A catchment is idealized as a $25 \: km \times 25 \: km$ ... . The average precipitation (in mm, up to one decimal place) over the catchment during this month by using the Thiessen polygon method is ___________
gatecse
asked
in
Hydrology
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
hydrology
water-resources-engineering
precipitation
0
votes
0
answers
15
GATE2017 CE-2-48
The culturable command area of a canal is $10.000$ ha. The area grows only two crops - rice in the Kharif season and wheat in the Rabi season. The design discharge of the canal is based on the rice requirements, which has an irrigated area of $2500$ ha, ... The maximum permissible irrigated area (in ha) for wheat, with a base period of $120$ days and delta of $50$ cm, is __________
gatecse
asked
in
Irrigation
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
irrigation
water-resources-engineering
design-of-lined-and-unlined-canals
0
votes
0
answers
16
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
asked
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
17
GATE2017 CE-2-53
The analysis of a water sample produces the following results: ... $CaCO_3$) of the water sample is _______
gatecse
asked
in
Water Resources Engineering
Aug 7, 2019
by
gatecse
4.0k
points
gate2017-ce-2
numerical-answers
water-resources-engineering
0
votes
0
answers
18
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
19
GATE2019 CE-1: 14
If the path of an irrigation canal is below the bed level of a natural stream, the type of cross-drainage structure provided is Aqueduct Level crossing Sluice gate Super passage
Arjun
asked
in
Irrigation
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
irrgation
water-resources-engineering
cross-drainage-structures
canals
0
votes
0
answers
20
GATE2019 CE-1: 15
A catchment may be idealised as a rectangle. There are three rain gauges located inside the catchment at arbitrary locations. The average precipitation over the catchment is estimated by two methods: Arithmetic mean $(P_A)$ Thiessen polygon $(P_T)$ Which one of the ... greater than $P_T$ $P_A$ is always equal to $P_T$ There is no definite relationship between $P_A$ and $P_T$
Arjun
asked
in
Hydrology
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
water-resources-engineering
hydrology
precipitation
arithmetic-mean-and-thiessen-polygon
0
votes
0
answers
21
GATE2019 CE-1: 22
A circular duct carrying water gradually contracts from a diameter of $30 \: cm$ to $15 \: cm$. The figure (not drawn to scale) shows the arrangement to differential manometer attached to the duct. When the water flows, the differential manometer shows a ... Assuming frictionless flow, the flow rate (in $m^3/s$, round off to $3$ decimal places) through the duct is ________
Arjun
asked
in
Fluid Mechanics
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
water-resources-engineering
fluid-mechanics
manometer
flow-in-pipes
0
votes
0
answers
22
GATE2019 CE-1: 28
A rectangular open channel has a width of $5 \: m$ and a bed slope of $0.001$. For a uniform flow of depth $2 \: m$, the velocity is $2 \: m/s$. The Manning’s roughness coefficient for the channel is $0.002$ $0.017$ $0.033$ $0.050$
Arjun
asked
in
Water Resources Engineering
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
water-resources-engineering
manning's-roughness-coefficient
0
votes
0
answers
23
GATE2019 CE-1: 49
The hyetograph of a storm event of duration $140$ minutes is shown in the figure: The infiltration capacity at the start of this event $(t=0)$ is $17 \: mm/hour$, which linearly decreases to $10 \: mm/hour$ after $40$ minutes duration. As the event ... of the storm event. The value of the infiltration index, $\phi$ (in $mm/hour$ round off to $2$ decimal places), is _____________
Arjun
asked
in
Hydrology
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
water-resources-engineering
hydrology
infiltration
0
votes
0
answers
24
GATE2019 CE-1: 50
Two water reservoirs are connected by a siphon (running full) of total length $5000$ m and diameter of $1.10$ m, as shown below (figure not drawn to scale). The inlet leg length of the siphon to its summit is $2000$ m. The difference in the water surface ... of the summit of siphon from the water level of upper reservoir, $h$ (in m, round off to $1$ decimal place) is ______
Arjun
asked
in
Hydrology
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
hydrology
water-resources-engineering
reservoirs
0
votes
0
answers
25
GATE2019 CE-1: 51
Consider a laminar flow in the x-direction between two infinite parallel plates (Couette flow). The lower plate is stationary and the upper plate is moving with a velocity of $1 \: cm/s$ in the x-direction. The distance between the plates is $5 \: mm$ and the dynamic viscosity ... $\dfrac {\partial p}{\partial x}$, (in $N/m^2$ per $m$, round off to $1$ decimal place) is _________
Arjun
asked
in
Fluid Mechanics
Feb 14, 2019
by
Arjun
11.6k
points
gate2019-ce-1
numerical-answers
fluid-mechanics
water-resources-engineering
laminar-flow
0
votes
0
answers
26
GATE2019 CE-2: 12
A solid sphere of radius, $r$, and made of material with density, $\rho_s$, is moving through the atmosphere (constant pressure, $p$) with a velocity, $v$. The net force ONLY due to atmospheric pressure $(F_p)$ acting on the sphere at any time, $t$, is $\pi r^2 p$ $4 \pi r^2 p$ $\dfrac{4}{3} \pi r^3 \rho_s \dfrac{dv}{dt}$ zero
Arjun
asked
in
Fluid Mechanics
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
water-resources-engineering
fluid-mechanics
fluid-statics
0
votes
0
answers
27
GATE2019 CE-2: 13
The velocity field in a flow system is given by $v=2\textbf{i}+(x+y) \textbf{j} + (xyz) \textbf{k}$. The acceleration of the fluid at $(1,1,2)$ is $2 \textbf{i}+ 10 \textbf{k}$ $4 \textbf{i}+ 12 \textbf{k}$ $ \textbf{j}+ \textbf{k}$ $4 \textbf{j}+ 10 \textbf{k}$
Arjun
asked
in
Fluid Mechanics
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
water-resources-engineering
fluid-mechanics
momentum-and-energy-equations
0
votes
0
answers
28
GATE2019 CE-2: 14
An inflow hydrograph is routed through a reservoir to produce an outflow hydrograph. The peak flow of the inflow hydrograph is $P_I$ and the time of occurrence of the peak is $t_I$. The peak flow of the outflow hydrograph is $P_O$ and the time of occurrence of the peak is $t_O$. ... $P_I <P_O$ and $t_I > t_O$ $P_I >P_O$ and $t_I < t_O$ $P_I >P_O$ and $t_I > t_O$
Arjun
asked
in
Hydrology
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
hydrology
water-resources-engineering
hydrograph-analysis
0
votes
0
answers
29
GATE2019 CE-2: 15
An earthen dam of height $H$ is made of cohesive soil whose cohesion and unit weight arc $c$ and $\gamma$ respectively. If the factor of safety against cohesion is $F_c$, the Taylor’s stability number $(S_n)$ is $\dfrac{\gamma H}{cF_c} \\$ $\dfrac{cF_c}{\gamma H} \\$ $\dfrac{c}{F_c \gamma H} \\$ $\dfrac{F_c \gamma H}{c}$
Arjun
asked
in
Irrigation
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
water-resources-engineering
irrigation
dams
0
votes
0
answers
30
GATE2019 CE-2: 24
The command area of a canal grows only one crop, i.e., wheat. The base period of wheat is $120$ days and its total water requirement, $\Delta$, is $40 \: cm$. If the canal discharge is $2 \: m^3/s$, the area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all losses) is _________
Arjun
asked
in
Irrigation
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
irrigation
water-resources-engineering
crop-water-requirements-delta
0
votes
0
answers
31
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
32
GATE2019 CE-2: 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 ______
Arjun
asked
in
Hydrology
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
hydrology
water-resources-engineering
hydraulics-and-acquifers
0
votes
0
answers
33
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
34
GATE2019 CE-2: 49
Two identical pipes (i.e., having the same length, same diameter, and same roughness) are used to withdraw water from a reservoir. In the first case, they are attached in series and discharge freely into the atmosphere. In the second case, they are ... ratio of the discharge in the parallel arrangement to that in the series arrangement (round off to $2$ decimal places) is ________
Arjun
asked
in
Fluid Mechanics
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
fluid-mechanics
water-resources-engineering
pipes
reservoirs
0
votes
0
answers
35
GATE2019 CE-2: 50
The ordinates, $u$, of a $2$-hour unit hydrograph (i.e., for $1$ ... base flow is constant at $5 \: m^3/s$, the peak flow due to this storm (in $m^3/s$, round off to $1$ decimal place) will be __________
Arjun
asked
in
Hydrology
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
numerical-answers
hydrology
water-resources-engineering
hydrographs
surface-runoff-models
0
votes
0
answers
36
GATE2016-2-14
Profile of a weir on permeable foundation is shown in the figure I and an elementary profile of upstream pile only case' according to Khosla's theory is shown in the figure II. The uplift pressure heads at key points $Q, R$ and $S$ are $3.14 \: m$, $2.75 \: m$ ... (junction of floor and pile as shown in the figure I)? $2.75 \: m$ $1.25 \: m$ $0.8 \: m$ Data not sufficient
Milicevic3306
asked
in
Irrigation
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
irrigation
water-resources-engineering
design-of-weirs-on-permeable-foundation
0
votes
0
answers
37
GATE2016-2-15
Water table of an aquifer drops by $100$ cm over an area of $1000 \: km^2$. The porosity and specific retention of the aquifer material are $25 \%$ and $5\%$ respectively. The amount of water (expressed in $km^3$) drained out from the area is ________
Milicevic3306
asked
in
Hydrology
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
numerical-answers
water-resources-engineering
hydrology
aquifers
0
votes
0
answers
38
GATE2016-2-16
Group I contains the types of fluids while group II contains the shear stress - rate of shear relationship of different types of fluids, as shown in the figure. ... $P-2, Q-5, R-4, S-1$ $P-2, Q-4, R-5, S-3$ $P-2, Q-1, R-3, S-4$
Milicevic3306
asked
in
Fluid Mechanics
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
water-resources-engineering
fluid-mechanics
fluid-statics
0
votes
0
answers
39
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
40
GATE2016-2-48
A penstock of $1 \: m$ diameter and $5 \: km$ length is used to supply water from a reservoir to an impulse turbine. A nozzle of $15 \: cm$ diameter is fixed at the end of penstock. The elevation difference between the turbine and water level in the ... $80\%$, power generated (expressed in $kW$ and rounded to nearest integer) is _________
Milicevic3306
asked
in
Hydrology
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
numerical-answers
water-resources-engineering
hydrology
reservoir-capacity
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