DOCKS AND HARBOR ENGINEERING QUIZ

greater than the vapour pressure over the plane surface

zero

equal to the vapour pressure over the plane surface

less man the vapour pressure over the plane surface

simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls

All of these

supersonics, as with projectile and jet propulsion

full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc

d > e > m

e > m > d

e > d > m

d > m > e

Pressure force

Gravity force

Viscous force

Elastic force

Viscous force

Surface tension force

Gravity force

Elastic force

(w Q ηo) / Hm

(w Hm Q) / ηo

(w Q) / (Hm × ηo)

(w Hm) / (Q × ηo)

None of these

there will be vacuum in the liquid

the pressure in the liquid mass is greater than hydrostatic pressure

the pressure throughout the liquid mass is atmospheric

Total pressure of liquid flowing in a pipe

Pressure difference between two points in a pipe

Velocity of flow at the required point in a pipe

Discharge through a pipe

2.5 and 4

1 and 6

1 and 2.5

4 and 6

less at low temperature and more at high temperature

less

more

equal