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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
A flow through a long pipe at constant rate is called

Unsteady uniform flow
Unsteady non-uniform flow
Steady non-uniform flow
Steady uniform flow

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Hydraulics and Fluid Mechanics in ME
For very high discharge at low pressure such as for flood control and irrigation applications, following type of pump is preferred

Reciprocating
Axial flow
Mixed flow
Centrifugal

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Hydraulics and Fluid Mechanics in ME
The center of pressure of a surface subjected to fluid pressure is the point

on the surface at which resultant pres-sure acts
similar to metacentre
on the surface at which gravitational force acis
at which all hydraulic forces meet

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Hydraulics and Fluid Mechanics in ME
The units of dynamic or absolute viscosity are

kg sec/meter
newton-sec² per meter
newton-sec per meter
metres² per sec

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Hydraulics and Fluid Mechanics in ME
An air vessel is provided at the summit in a siphon to

Avoid interruption in the flow
Increase velocity
Maintain pressure difference
Increase discharge

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Hydraulics and Fluid Mechanics in ME
The specific speed of a turbine is given by the equation

N√P / H²
N√P / H5/4
N√P / H3
N√P / H3/2

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