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Recent questions and answers in Fluid Mechanics
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1
GATE Civil 2021 Set 2 | Question: 12
The ratio of the momentum correction factor to the energy correction factor for a laminar flow in a pipe is $\frac{1}{2}$ $\frac{2}{3}$ $1$ $\frac{3}{2}$
go_editor
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in
Fluid Mechanics
Mar 1, 2021
by
go_editor
5.3k
points
gatecivil-2021-set2
flow-in-pipes
laminar-flow
0
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0
answers
2
GATE Civil 2021 Set 2 | Question: 23
A lake has a maximum depth of $\text{60 m}$. If the mean atmospheric pressure in the lake region is $\text{91 kPa}$ and the unit weight of the lake water is $\text{9790 N/m}^{3}$, the absolute pressure (in $\text{kPa}, \textit{round off to two decimal places}$) at the maximum depth of the lake is ___________________
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in
Fluid Mechanics
Mar 1, 2021
by
go_editor
5.3k
points
gatecivil-2021-set2
numerical-answers
momentum-and-energy-equations
fluid-statics
0
votes
0
answers
3
GATE Civil 2021 Set 2 | Question: 40
A fire hose nozzle directs a steady stream of water of velocity $\text{50 m/s}$ at an angle of $45^{\circ}$ above the horizontal. The stream rises initially but then eventually falls to the ground. Assume water as incompressible and ... ) reached by the stream above the hose nozzle will then be __________
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in
Fluid Mechanics
Mar 1, 2021
by
go_editor
5.3k
points
gatecivil-2021-set2
numerical-answers
properties-of-fluids
fluid-statics
0
votes
0
answers
4
GATE Civil 2021 Set 2 | Question: 49
A venturimeter as shown in the figure (not to scale) is connected to measure the flow of water in a vertical pipe of $\text{20 cm}$ diameter. Assume $g=9.8\text{ m/s}^{2}$ ... $\text{lps}$, round off to two decimal places) considering no loss in the venturimeter is ______________________
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Fluid Mechanics
Mar 1, 2021
by
go_editor
5.3k
points
gatecivil-2021-set2
numerical-answers
flow-in-pipes
0
votes
0
answers
5
GATE Civil 2021 Set 1 | Question: 10
‘Kinematic viscosity’ is dimensionally represented as $\frac{M}{LT}$ $\frac{M}{L^{2}T}$ $\frac{T^{2}}{L}$ $\frac{L^{2}}{T}$
Arjun
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Fluid Mechanics
Feb 20, 2021
by
Arjun
11.6k
points
gatecivil-2021-set1
kinematic-viscosity
0
votes
0
answers
6
GATE Civil 2021 Set 1 | Question: 49
A cylinder $\text{(2.0 m diameter, 3.0 m long and 25 kN weight)}$ is acted upon by water on one side and oil $\text{(specific gravity=0.8)}$ on other side as shown in the figure. The absolute ratio of the net magnitude of vertical forces to the net magnitude of horizontal forces ($\textit{round off to two decimal places}$) is _____________________
Arjun
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Fluid Mechanics
Feb 20, 2021
by
Arjun
11.6k
points
gatecivil-2021-set1
numerical-answers
properties-of-fluids
fluid-statics
0
votes
0
answers
7
GATE2020-CE-1-12
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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Fluid Mechanics
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
laminar-and-turbulent-flow
0
votes
0
answers
8
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 $3.95$ $4.40$ $4.75$ $5.55$
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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
9
GATE2020-CE-1-52
Surface Overflow Rate (SOR) of a primary settling tank (discrete settling) is $20000\:litre/m^2$ per day. Kinematic viscosity of water in the tank is $1.01\times10^{-2}\:cm^2/s$. Specific gravity of the settling particles is $2.64$. Acceleration due to ... $80\%$ efficiency in the tank, is ______.
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in
Fluid Mechanics
Feb 28, 2020
by
go_editor
5.3k
points
gate2020-ce-1
numerical-answers
flow-in-pipes
flow-measurements
0
votes
0
answers
10
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
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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
11
GATE2020 CE-2-25
Two identically sized primary settling tanks receive water for $\text{Type-I}$ settling (discrete particles in dilute suspension) under laminar flow conditions. The Surface Overflow Rate (SOR) maintained in the two tanks are $30\ m^3/m^2.d$ and $15\: m^3/m^2.d$. ... $d_{15}$ respectively. The ratio, $\large \dfrac{d_{30}}{d_{15}}$ (round off to two decimal places), is ________.
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in
Fluid Mechanics
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
numerical-answers
laminar-flow
0
votes
0
answers
12
GATE2020 CE-2-49
A cast iron pipe of diameter $600\: mm$ and length $400\: m$ carries water from a tank and discharges freely into air at a point $4.5\: m$ below the water surface in the tank. The friction factor of the pipe is $0.018$. Consider acceleration due to gravity as $9.81\: m/s^2$. The velocity of the flow in pipe (in $m/s$, round off to two decimal places) is ________.
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in
Fluid Mechanics
Feb 13, 2020
by
go_editor
5.3k
points
gate2020-ce-2
numerical-answers
flow-in-pipes
0
votes
0
answers
13
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
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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
14
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
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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
15
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
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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
16
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
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Fluid Mechanics
Feb 12, 2019
by
Arjun
11.6k
points
gate2019-ce-2
water-resources-engineering
fluid-mechanics
fluid-statics
0
votes
0
answers
17
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}$ $4 \textbf{j}+ 10 \textbf{k}$
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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
18
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
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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
19
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
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Fluid Mechanics
Mar 28, 2018
by
Milicevic3306
11.9k
points
gate2016-ce-2
water-resources-engineering
fluid-mechanics
fluid-statics
0
votes
0
answers
20
GATE2017 CE-1: 12
For a steady incompressible laminar flow between two infinite parallel stationary plates, the shear stress variation is linear with zero value at the plates linear with zero value at the center quadratic with zero value at the plates quadratic with zero value at the center
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
fluid-mechanics
water-resources-engineering
laminar-flow
shear-stress
0
votes
0
answers
21
GATE2017 CE-1: 13
The reaction rate involving reactants $A$ and $B$ is given by $-k[A]^{\alpha} [B]^{\beta}$. Which one of the following statements is valid for the reaction to be first-order reaction? $\alpha=0$ and $\beta=0$ $\alpha=1$ and $\beta=0$ $\alpha=1$ and $\beta=1$ $\alpha=1$ and $\beta=2$
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
water-resources-engineering
first-order-reaction
fluid-mechanics
0
votes
0
answers
22
GATE2017 CE-1: 23
A triangular pipe network is shown in the figure. The head loss in each pipe is given by $h_f = rQ^{1.8}$, with the variables expressed in a consistent set of units. The value of $r$ for the pipe $AB$ is $1$ and for the pipe $BC$ is $2$. If the ... is equally divided between the pipes $AB$ and $AC$, the value of $r$ (up to two decimal places) for the pipe $AC$ should be _______
Milicevic3306
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
numerical-answers
fluid-mechanics
water-resources-engineering
flow-in-pipes
0
votes
0
answers
23
GATE2017 CE-1: 49
Water flows through a $90^{\circ}$ bend in a horizontal plane as depicted in the figure. A pressure of $140$ kPa is measured at Section $1-1$. The inlet diameter marked at Section $1-1$ is $\frac{27}{\sqrt{\pi}}$ cm, while the nozzle ... bend is negligible. The magnitude of the force (in kN, up to two decimal places) that would be required to hold the pipe section is __________
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
numerical-answers
flow-in-pipes
fluid-mechanics
water-resources-engineering
0
votes
0
answers
24
GATE2017 CE-1: 53
The spherical grit particles, having a radius of $0.01$ mm and specific gravity of $3.0$, need to be separated in a settling chamber. It is given that $g=9.81 \: m/s^2$ the density of the liquid in the settling chamber $=1000 \: kg/m^3$ the ... settling chamber $=10^{-6} \: m^2/s$ Assuming laminar conditions, the settling velocity (in mm/s, up to one decimal place) is __________
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2017-ce-1
numerical-answers
fluid-mechanics
laminar-conditions
environmental-engineering
0
votes
0
answers
25
GATE2015-2-44
The velocity components of a two dimensional plane motion of a fluid are $:u=\dfrac{y^3}{3}+2x—x^2y$ and $v=xy^2-2y-\dfrac{x^3}{3}$. The correct statement is: Fluid is incompressible and flow is irrotational Fluid is incompressible and flow is rotational Fluid is compressible and flow is irrotational Fluid is compressible and flow is rotational
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-2
water-resources-engineering
fluid-mechanics
fluid-statics
0
votes
0
answers
26
GATE2015-1-12
Which of the following statements is TRUE for the relation between discharge velocity and seepage velocity? Seepage velocity is always smaller than discharge velocity Seepage velocity can never be smaller than discharge velocity Seepage velocity is equal to the discharge velocity No relation between Seepage velocity and discharge velocity can be established
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Fluid Mechanics
Mar 26, 2018
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Milicevic3306
11.9k
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gate2015-ce-1
water-resources-engineering
fluid-mechanics
discharge-and-seepage-velocity
0
votes
0
answers
27
GATE2015-1-16
In a two-dimensional steady flow field, in a certain region of the $x-y$ plane, the velocity component in the $x$-direction is given by $v_x=x^2$ and the density varies as $\rho = \dfrac{1}{x}$. Which of the following is a valid expression for the velocity component in the $y$ – direction, $v_y$? $v_y= \:– x/y$ $v_y = x/y$ $v_y = \:-xy$ $v_y = xy$
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2015-ce-1
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
28
GATE2015-1-17
For steady incompressible flow through a closed-conduit of uniform cross-section, the direction of flow will always be: from higher to lower elevation from higher to lower pressure from higher to lower velocity from higher to lower piezometric head
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Fluid Mechanics
Mar 26, 2018
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Milicevic3306
11.9k
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gate2015-ce-1
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
29
GATE2015-1-46
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 non-dimensional 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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Fluid Mechanics
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Milicevic3306
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gate2015-ce-1
fluid-mechanics
water-resources-engineering
dimensional-analysis
flow-in-pipes
0
votes
0
answers
30
GATE2014-2-45
With reference to a standard Cartesian (x, y) plane, the parabolic velocity distribution profile of fully developed laminar flow in x-direction between two parallel, stationary and identical plates that are separated by distance, h, is given by the expression ...
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Fluid Mechanics
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Milicevic3306
11.9k
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gate2014-ce-2
water-resources-engineering
fluid-mechanics
laminar-flow
0
votes
0
answers
31
GATE2014-2-42
A venturimeter having a throat diameter of $0.1$ m is used to estimate the flow rate of a horizontal pipe having a diameter of $0.2$ m. For an observed pressure difference of $2$ m of water head and coefficient of discharge equal to unity, assuming that the energy losses are ... the flow rate (in $m^3/s$) through the pipe is approximately equal to $0.500$ $0.150$ $0.050$ $0.015$
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Fluid Mechanics
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by
Milicevic3306
11.9k
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gate2014-ce-2
fluid-mechanics
water-resources-engineering
flow-in-pipes
0
votes
0
answers
32
GATE2014-2-18
Group I lists a few devices while Group II provides information about their uses. Match the devices with their corresponding use. ... $P-4; \: Q-2; \: R-1 \: S-3$ $P-4; \: Q-3; \: R-2 \: S-1$
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Fluid Mechanics
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Milicevic3306
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gate2014-ce-2
water-resources-engineering
fluid-mechanics
flow-stream
0
votes
0
answers
33
GATE2014-2-17
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 $T_1=-T_2 \\$ $T_1=- \dfrac{T_2}{2} \\$ $T_1=\dfrac{T_2}{2} \\$ $T_1=T_2$
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11.9k
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gate2014-ce-2
fluid-mechanics
water-resources-engineering
flow-in-pipes
0
votes
0
answers
34
GATE2014-1-49
A straight $100$ m long raw water gravity main is to carry water from an intake structure to the jack well of a water treatment plant. The required flow through this water main is $0.21 \: m^3/s$. Allowable velocity through the main is $0.75$ m/ ... (in $cm/100$ m length) to be given to this gravity main so that the required amount of water flows without any difficulty is ___________
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Fluid Mechanics
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gate2014-ce-1
numerical-answers
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
35
GATE2014-1-42
A venturimeter, having a diameter of $7.5$ cm at the throat an $15$ cm at the enlarged end, is installed in a horizontal pipeline of $15$ cm diameter. The pipe carries an incompressible fluid at a steady rate of $30$ litres per second, The difference of ... as $9.81 \: m/s^2$, the coefficient of discharge of the venturimeter (correct up to two places of decimal) is ____________
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Fluid Mechanics
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gate2014-ce-1
numerical-answers
fluid-mechanics
water-resources-engineering
flow-in-pipes
steady-rate
0
votes
0
answers
36
GATE2014-1-41
A horizontal jet of water with its cross-sectional area of $0.0028 \: m^2$ hits a fixed vertical plate with a velocity of $5$ m/s. After impact, the jet splits symmetrically in a plane parallel to the plane of the plate. The force of impact (in N) of the jet on the plate is $90$ $80$ $70$ $60$
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Fluid Mechanics
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Milicevic3306
11.9k
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gate2014-ce-1
water-resources-engineering
fluid-mechanics
force-impact
0
votes
0
answers
37
GATE2014-1-44
Three rigid buckets, shown as in the figures $(1)$, $(2)$, and $(3)$, are of identical heights and base areas. Further, assume that each of these buckets have negligible mass and are full of water. The weights of water in these buckets are denoted as $W_1$, $W_2$ and $W_3$ ... $F_2 > F_1 >F_3$ $W_2=W_1=W_3$ and $F_1 = F_2 = F_3$ $W_2>W_1>W_3$ and $F_1 = F_2 = F_3$
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Fluid Mechanics
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Milicevic3306
11.9k
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gate2014-ce-1
water-resources-engineering
weights-of-water
force-of-water
fluid-mechanics
0
votes
0
answers
38
GATE2014-1-45
An incompressible fluid is flowing at a steady rate in a horizontal pipe. From a section, the pipe divides into two horizontal parallel pipes of diameters $d_1$ and $d_2$ (where $d_1 =4d_2$) that run for a distance of $L$ each and then ... only and the Darcy-Weisbach friction factor to be the same. The velocity ratio between the bigger and the smaller branched pipes is ____________
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Fluid Mechanics
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gate2014-ce-1
numerical-answers
fluid-mechanics
flow-in-pipes
water-resources-engineering
0
votes
0
answers
39
GATE2014-1-20
The dimension for kinematic viscosity is $\dfrac{L}{MT} \\$ $\dfrac{L}{T^2} \\$ $\dfrac{L^2}{T} \\$ $\dfrac{ML}{T}$
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Fluid Mechanics
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Milicevic3306
11.9k
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gate2014-ce-1
water-resources-engineering
fluid-mechanics
kinematic-viscosity
0
votes
0
answers
40
GATE2014-1-17
An incompressible homogeneous fluid is flowing steadily in a variable diameter pipe having the large and small diameters as $15$ cm and $5$ cm, respectively. If the velocity at a section at the $15$ cm diameter portion of the pipe is $2.5$ m/s, the velocity of the fluid (in m/s) at a section falling in $5$ cm portion of the pipe is _______
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Fluid Mechanics
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Milicevic3306
11.9k
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gate2014-ce-1
numerical-answers
fluid-mechanics
fluid-statics
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