Hydraulics & Fluid Mechanics
If a sphere of diameter 1 cm falls in castor oil of kinematic viscosity 10 stokes, with a terminal velocity of 1.5 cm/sec, the coefficient of drag on the sphere is

200
between 1 and 100
less than 1
160

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

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

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

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

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