## 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
constant over the cross section
parabolic distribution across the section
zero at plates and increases linearly to midpoint

(i) and (iv)
(ii) and (iv)
(ii) and (iii)
(i) and (iii)

viscosity
cohesion
surface tension
friction

## Hydraulics & Fluid Mechanics Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the

force of friction
force of diffusion
force of cohesion

## 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
principle of conservation of mass holds
total energy is constant throughout
velocity and pressure are inversely proportional

## Hydraulics & Fluid Mechanics Drag force is a function of i) projected area of the body ii) mass density of the fluid iii) velocity of the body The correct answer is

(i), (ii) and (iii)
(i) and (iii)
(ii) and (iii)
(i) and (ii)