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Recent questions tagged fluid-mechanics
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1
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
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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
2
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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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
3
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
4
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
5
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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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
6
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
7
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
8
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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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
9
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
Milicevic3306
asked
in
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
10
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 $\beta=2$
Milicevic3306
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in
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
11
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
asked
in
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
12
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 __________
Milicevic3306
asked
in
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
13
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 __________
Milicevic3306
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in
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
14
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
Milicevic3306
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in
Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-2
water-resources-engineering
fluid-mechanics
fluid-statics
0
votes
0
answers
15
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
by
Milicevic3306
11.9k
points
gate2015-ce-1
water-resources-engineering
fluid-mechanics
discharge-and-seepage-velocity
0
votes
0
answers
16
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, $v_y$? $v_y= \:– x/y$ $v_y = x/y$ $v_y = \:-xy$ $v_y = xy$
Milicevic3306
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in
Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-1
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
17
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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in
Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-1
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
18
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
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2015-ce-1
fluid-mechanics
water-resources-engineering
dimensional-analysis
flow-in-pipes
0
votes
0
answers
19
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 ...
Milicevic3306
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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2014-ce-2
water-resources-engineering
fluid-mechanics
laminar-flow
0
votes
0
answers
20
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 $0.500$ $0.150$ $0.050$ $0.015$
Milicevic3306
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in
Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2014-ce-2
fluid-mechanics
water-resources-engineering
flow-in-pipes
0
votes
0
answers
21
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
Mar 26, 2018
by
Milicevic3306
11.9k
points
gate2014-ce-2
water-resources-engineering
fluid-mechanics
flow-stream
0
votes
0
answers
22
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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Fluid Mechanics
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2014-ce-2
fluid-mechanics
water-resources-engineering
flow-in-pipes
0
votes
0
answers
23
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
Mar 26, 2018
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Milicevic3306
11.9k
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gate2014-ce-1
numerical-answers
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
24
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
Mar 26, 2018
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Milicevic3306
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gate2014-ce-1
water-resources-engineering
weights-of-water
force-of-water
fluid-mechanics
0
votes
0
answers
25
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
Mar 26, 2018
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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
26
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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gate2014-ce-1
numerical-answers
fluid-mechanics
water-resources-engineering
flow-in-pipes
steady-rate
0
votes
0
answers
27
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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11.9k
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gate2014-ce-1
numerical-answers
fluid-mechanics
flow-in-pipes
water-resources-engineering
0
votes
0
answers
28
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
Mar 26, 2018
by
Milicevic3306
11.9k
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gate2014-ce-1
numerical-answers
fluid-mechanics
fluid-statics
water-resources-engineering
0
votes
0
answers
29
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
Mar 26, 2018
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11.9k
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gate2014-ce-1
water-resources-engineering
fluid-mechanics
kinematic-viscosity
0
votes
0
answers
30
GATE Civil 2013 | Question: 17
Group-I contains dimensionless parameters and Group-II contains the ratios. ... $P-3, Q-4, R-2, S-1$ $P-2, Q-3, R-4, S-1$ $P-1, Q-3, R-2, S-4$
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Fluid Mechanics
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11.9k
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gate2013-ce
water-resources-engineering
system-of-forces
fluid-mechanics
0
votes
0
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31
GATE Civil 2013 | Question: 18
For a two dimensional flow field, the stream function $\psi$ is given as $\psi = \dfrac{3}{2}(y^2-x^2)$. The magnitude of discharge occurring between the stream lines passing through points $(0,3)$ and $(3,4)$ is $6$ $3$ $1.5$ $2$
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Fluid Mechanics
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Milicevic3306
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gate2013-ce
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
32
GATE Civil 2012 | Question: 18
The circular water pipes shown in the sketch are flowing full. The velocity of flow (in m/s) in the branch pipe “R” is $3$ $4$ $5$ $6$
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Fluid Mechanics
Mar 25, 2018
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Milicevic3306
11.9k
points
gate2012-ce
fluid-mechanics
water-resources-engineering
flow-in-pipes
0
votes
1
answer
33
GATE2018 CE-2: 49
A flocculation tank contain $1800 \: m^3$ of water, which is mixed using paddles at an average velocity gradient $G$ of $100/s$. The water temperature and the corresponding dynamic viscosity are $30^{\circ}C$ and $0.798 \times 10^{-3} \: Ns/m^2$, respectively. The theoretical power required to achieve the stated value of $G$ (in kW, up to two decimal places) is _____
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Fluid Mechanics
Feb 17, 2018
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gatecse
4.0k
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gate2018-ce-2
numerical-answers
water-resources-engineering
fluid-mechanics
dynamic-viscocity
0
votes
0
answers
34
GATE2018 CE-2: 46
A three-fluid system (immiscible) is connected to a vacuum pump. The specific gravity values of the fluids ($S_1, \: S_2$) are given in the figure. The gauge pressure value (in $kN/m^2$, up to two decimal places), of $p_1$ is _______
gatecse
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Fluid Mechanics
Feb 17, 2018
by
gatecse
4.0k
points
gate2018-ce-2
numerical-answers
fluid-mechanics
water-resources-engineering
gauge-pressure
0
votes
1
answer
35
GATE2018 CE-2: 48
A rough pipe of $0.5$ m diameter, $300$ m length and roughness height of $0.25$ mm, carries water (kinematic viscosity $= 0.9 \times 10^{-6} \: m^2/s$) with velocity of $3$ m/s. Friction factor $(f)$ for laminar flow is given by $f=64/R_e$, and for ... k=roughness height and $g=9.81 \: m/s^2$. The head loss (in m, up to three decimal places) in the pipe due to friction is _______
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Fluid Mechanics
Feb 17, 2018
by
gatecse
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gate2018-ce-2
numerical-answers
fluid-mechanics
water-resources-engineering
laminar-flow
flow-in-pipes
0
votes
0
answers
36
GATE2018 CE-1: 32
A closed tank contains $0.5$ m thick layer of mercury (specific gravity $=13.6$) at the bottom. A $2.0$ m thick layer of water lies above the mercury layer. A $3.0$ m thick layer of oil (specific gravity $=0.6$) lies above the water layer. The space above the oil layer contains air under ... air space is $92.214 \: kN/m^2$ $95.644 \: kN/m^2$ $98.922 \: kN/m^2$ $99.321 \: kN/m^2$
gatecse
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Fluid Mechanics
Feb 17, 2018
by
gatecse
4.0k
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gate2018-ce-1
water-resources-engineering
fluid-mechanics
concept-of-boundary-layer-and-its-growth
0
votes
0
answers
37
GATE2018 CE-1: 17
A flow field is given by $u=y^2, \: v=-xy, \: w=0$. Value of the z-component of the angular velocity (in radians per unit time, up to two decimal places) at the point $(0, -1, 1)$ is ____
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Fluid Mechanics
Feb 17, 2018
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gatecse
4.0k
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gate2018-ce-1
numerical-answers
water-resources-engineering
fluid-mechanics
flow-in-pipes
0
votes
0
answers
38
GATE2018 CE-1: 12
Bernoulli's equation is applicable for viscous and compressible fluid flow inviscid and compressible fluid flow inviscid and incompressible fluid flow viscous and incompressible fluid flow
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Fluid Mechanics
Feb 17, 2018
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gatecse
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gate2018-ce-1
fluid-mechanics
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