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

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

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP

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

the center of gravity of the body and the center of pressure
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

ANSWER DOWNLOAD EXAMIANS APP