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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific weight of the liquid, and H = Height of the liquid)

wH
wH/2
wH2/2
wH2/4

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Hydraulics and Fluid Mechanics in ME
A differential manometer is used to measure

Pressure in pipes and channels
Pressure in Venturimeter
Difference of pressures between two points in a pipe
Atmospheric pressure

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Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid is the ratio of

Shear stress to shear strain
Critical velocity to the viscosity of fluid
Increase in pressure to the volumetric strain
Increase in volume to the viscosity of fluid

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Hydraulics and Fluid Mechanics in ME
Differential monometer is used to measure

atmospheric pressure
difference of pressure between two points
very low pressure
pressure in pipes, channels etc

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Hydraulics and Fluid Mechanics in ME
For hydro-dynamically smooth boundary, the friction coefficient for turbulent flow is

dependent on relative roughness only
constant
dependent only on Reynolds number
a function of Reynolds number and relative roughness

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Hydraulics and Fluid Mechanics in ME
The cavitation in a hydraulic machine

Reduces the discharge of a turbine
All of these
Causes sudden drop in power output and efficiency
Causes noise and vibration of various parts

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MORE MCQ ON Hydraulics and Fluid Mechanics in ME

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