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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The Fourneyron turbine is _________ reaction turbine.

A mixed flow
An axial flow
An outward flow
An inward flow

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Hydraulics and Fluid Mechanics in ME
An internal mouthpiece is said to be running free if the length of the mouthpiece is __________ the diameter of the orifice.

Less than twice
More than three times
More than twice
Less than three times

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Hydraulics and Fluid Mechanics in ME
The velocity distribution for laminar flow through a circular tube

varies parabolically with maximum at the centre
is constant over the cross-section
None of these
varies linearly from zero at walls to maximum at centre

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Hydraulics and Fluid Mechanics in ME
The unit speed of the turbine runner is

N/H²
N/√H
N/H
N/H3/2

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Hydraulics and Fluid Mechanics in ME
A body floats in stable equilibrium

When the metacentre is above e.g.
When its meatcentric height is zero
When its e.g. is below its center of buoyancy
Metacentre has nothing to do with position of e.g. for determining stability

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Hydraulics and Fluid Mechanics in ME
In a free nappe,

The pressure above the nappe is atmospheric
The pressure below the nappe is negative
The pressure above the nappe is negative
The pressure below the nappe is atmospheric

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