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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The unit of surface tension is

N/m3
N-m
N/m2
N/m

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Hydraulics and Fluid Mechanics in ME
The hydraulic efficiency of an impulse turbine is maximum when velocity of wheel is _______ of the jet velocity,

Double
Three-fourth
One-half
One-fourth

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Hydraulics and Fluid Mechanics in ME
A pitot tube is used to measure the

Velocity of flow at the required point in a pipe
Pressure difference between two points in a pipe
Discharge through a pipe
Total pressure of liquid flowing in a pipe

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Hydraulics and Fluid Mechanics in ME
The correct relationship among displacement thickness d, momentum thickness m and energy thickness e is

e > m > d
e > d > m
d > e > m
d > m > e

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Hydraulics and Fluid Mechanics in ME
In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than

All of these
frictional force
viscosity
surface friction

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Hydraulics and Fluid Mechanics in ME
A hydraulic accumulator normally consists of

A cylinder, a piston, storage tank and control valve
Two cylinders, two rams and a storage device
A cylinder and a ram
Two coaxial rams and two cylinders

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