Hydraulics & Fluid Mechanics
Fluid is a substance that

has the same shear stress.at a point regardless of its motion
always expands until it fills any container
cannot be subjected to shear forces
cannot remain at rest under action of any shear force

ANSWER DOWNLOAD EXAMIANS APP

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

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

ANSWER DOWNLOAD EXAMIANS APP