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Hydraulics and Fluid Mechanics in ME

Hydraulics and Fluid Mechanics in ME
The coefficient of discharge for an external mouthpiece depends upon

Length of mouthpiece
Pressure of liquid
Velocity of liquid
Area of mouthpiece

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Hydraulics and Fluid Mechanics in ME
The fluid forces considered in the Navier Stokes equation are

pressure, viscous and turbulent
gravity, pressure and viscous
gravity, viscous and turbulent
gravity, pressure and turbulent

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Hydraulics and Fluid Mechanics in ME
The velocity at which the laminar flow stops, is known as

None of these
Higher critical velocity
Lower critical velocity
Velocity of approach

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Hydraulics and Fluid Mechanics in ME
The length AB of a pipe ABC in which the liquid is flowing has diameter (d1) and is suddenly contracted to diameter (d2) at B which is constant for the length BC. The loss of head due to sudden contraction, assuming coefficient of contraction as 0.62, is

v₂²/2g
0.375 v₂²/2g
v₁²/2g
0.5 v₁²/2g

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Hydraulics and Fluid Mechanics in ME
A nozzle is generally made of

Convergent-divergent shape
Convergent shape
Cylindrical shape
Divergent shape

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Hydraulics and Fluid Mechanics in ME
Metacentric height for small values of angle of heel is the distance between the

free surface and centre of buoyancy
centre of gravity and centre of buoy-ancy
centre of buoyancy and metacentre
centre of gravity and metacentre

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