Hydraulics & Fluid Mechanics
An open vessel of water is accelerated up an inclined plane. The free water surface will

make an angle in direction of inclination of inclined plane
make an angle in opposite direction to inclination of inclined plane
be horizontal
any one of above is possible

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

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

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Hydraulics & Fluid Mechanics
The shear stress distribution for a fluid flowing in between the parallel plates, both at rest, is

zero at the mid plane and varies linearly with distance from mid plane
parabolic distribution across the section
constant over the cross section
zero at plates and increases linearly to midpoint

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