HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

μ π³ N² R⁴ /1800 t

μ π³ N² R⁴ /3600 t

μ π³ N² R² /1800 t

μ π³ N² R² /3600 t

sink to bottom

be fully immersed with top surface at fluid surface

partly immersed

float over fluid

is independent of pressure and viscosity

has the dimensions of 1/pressure

is large when fluid is more compressible

increases with pressure

Greater than 8°

Greater than 15°

Less than 8°

Greater than 5°

The magnitude and direction of the velocity do not change from point to point in the fluid

The velocity of successive fluid particles, at any point, is the same at successive periods of time

The direction and magnitude of the velocity at all points are identical

The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

kinematic viscosity

specific viscosity

coefficient of viscosity

viscosity index

The liquid particles at different sections have different velocities

Each liquid particle has a definite path

The liquid particles at all sections have the same velocities

The quantity of liquid flowing per second is constant

N/H

N/√H

N/H3/2

N/H²

sill

nappe

weir top

crest

Pressure in pipe, channels etc

Atmospheric pressure

Difference of pressure between two points

Very low pressures