GATE2017 ME-1: 9

Arjun asked in Fluid Mechanics Feb 27, 2017 recategorized Mar 5, 2021 by Lakshman Patel RJIT

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Which one of the following is NOT a rotating machine?

Centrifugal pump
Gear pump
Jet pump
Vane pump

gateme-2017-set1
fluid-mechanics-and-thermal-science
fluid-mechanics

Arjun asked in Fluid Mechanics Feb 27, 2017 recategorized Mar 5, 2021 by Lakshman Patel RJIT

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Arjun asked in Fluid Mechanics Feb 27, 2017

GATE2017 ME-1: 32
For a steady flow, the velocity field is $\vec{V}=(-x^{2}+3y)\hat{i}+(2xy)\hat{j}$. The magnitude of the acceleration of a particle at $(1, -1)$ is $2$ $1$ $2\sqrt{5}$ $0$

Arjun asked in Fluid Mechanics Feb 27, 2017

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gateme-2017-set1
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Arjun asked in Fluid Mechanics Feb 27, 2017

GATE2017 ME-1: 31
Consider steady flow of an incompressible fluid through two long and straight pipes of diameters $d_{1}$ and $d_{2}$ arranged in series. Both pipes are of equal length and the flow is turbulent in both pipes. The friction factor for turbulent flow though pipes is of the form, $f=K(Re)^{-n}$, where ... $\left ( \dfrac{d_{2}}{d_{1}} \right )^{(5+n)}$

Arjun asked in Fluid Mechanics Feb 27, 2017

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gateme-2017-set1
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fluid-mechanics

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Arjun asked in Fluid Mechanics Feb 27, 2017

GATE2017 ME-1: 30
The velocity profile inside the boundary layer for flow over a flat plate is given as $\dfrac{u}{U_{\infty }}= \sin \left ( \dfrac{\Pi }{2}\dfrac{y}{\delta } \right )$, where $U_{\infty}$ is the free stream velocity and $\delta$ is the local boundary layer thickness. If $\delta^{*}$ is ... $\dfrac{2}{\Pi } \\$ $1-\dfrac{2}{\Pi } \\$ $1+\dfrac{2}{\Pi } \\$ $0$

Arjun asked in Fluid Mechanics Feb 27, 2017

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gateme-2017-set1
boundary-layer
fluid-mechanics
fluid-mechanics-and-thermal-science

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Arjun asked in Fluid Mechanics Feb 27, 2017

GATE2017 ME-1: 8
Water (density $= 1000 kg/m^{3}$) at ambient temperature flows through a horizontal pipe of uniform cross section at the rate of $1 kg/s$. If the pressure drop across the pipe is $100$ KPa, the minimum power required to pump the water across the pipe, in watts, is ______.

Arjun asked in Fluid Mechanics Feb 27, 2017

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27.4k points

gateme-2017-set1
numerical-answers
fluid-mechanics-and-thermal-science
fluid-mechanics
flow-through-pipes

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Arjun asked in Fluid Mechanics Feb 27, 2017

GATE2017 ME-1: 7
Consider the two-dimensional velocity field given by $\overrightarrow{V}=(5+a_{1}x+b_{1}y)\hat{i}+(4+a_{2}x+b_{2}y)\hat{j}$, where $a_{1}, b_{1}, a_{2}$ and $b_{2}$ are constants. Which one of the following conditions needs to be satisfied for the flow to be incompressible? $a_{1}+b_{1}=0$ $a_{1}+b_{2}=0$ $a_{2}+b_{2}=0$ $a_{2}+b_{1}=0$

Arjun asked in Fluid Mechanics Feb 27, 2017

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27.4k points

gateme-2017-set1
fluid-mechanics-and-thermal-science
fluid-mechanics

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GATE2017 ME-1: 9

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