Hydraulics and Fluid Mechanics

A flow in which

A.elastic B.surface tension C.viscous D.inertia

Laminar flow

A.takes B.does not take undefined undefined

Turbulent flow takes place at high velocities.

A.Agree B.Disagree undefined undefined

The velocity at which the flow changes from laminar flow to turbulent flow is called

A.critical velocity B.velocity of approach C.sub-sonic velocity D.super-sonic velocity

Which of the following is an example of maninar flow?

A.Under ground flow B.Flow past tiny bodies C.Flow of oil in measuring insturments D.all of these

The velocity at which the laminar flow stops, is known as

A.velocity of approach B.lower critical velocity C.higher critical velocity D.none of these

The velocity at which the turbulent flow starts is known as higher critical velocity.

A.Yes B.No undefined undefined

A fluid whose viscosity does not change with the rate of deformation or shear strain is known as

A.real fluid B.ideal fluid C.newtonian fluid D.non-newtonian fluid

Reyold’s number is the ratio of the inertia force to the

A.surface tension force B.viscous force C.gravity force D.elastic force