Hydraulics & Fluid Mechanics
The normal stress is same in all directions at a point in a fluid

only when the fluid is frictionless
only when the fluid is incompressible and has zero viscosity
When there is no motion of one fluid layer relative to an adjacent layer
irrespective of the motion of one fluid layer relative to an adjacent layer

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Hydraulics & Fluid Mechanics
According to Bernoulli’s equation for steady ideal fluid flow

the energy is constant along a stream-line but may vary across streamlines
velocity and pressure are inversely proportional
principle of conservation of mass holds
total energy is constant throughout

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Hydraulics & Fluid Mechanics
Metacentric height is given as the distance between

the center of gravity of the body and the center of buoyancy
the center of gravity of the body andthe meta center
center of buoyancy and metacentre
the center of gravity of the body and the center of pressure

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Hydraulics & Fluid Mechanics
Non uniform flow occurs when

the direction and magnitude of the velocity at all points are identical
velocity, depth, pressure, etc. change from point to point in the fluid flow
the fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane
the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time

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