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

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

ANSWER DOWNLOAD EXAMIANS APP

Hydraulics & Fluid Mechanics
For laminar flow in a pipe of circular cross-section, the Darcy’s friction factor f is

inversely proportional to Reynolds number and directly proportional to pipe wall roughness
directly proportional to Reynolds number and independent of pipe wall roughness
directly proportional to pipe wall roughness and independent of Reynolds number
inversely proportional to Reynolds number and indpendent of pipe wall roughness

ANSWER DOWNLOAD EXAMIANS APP