HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

The speed at which turbine runner will be damaged

Full load speed

The speed corresponding to maximum overload permissible

The speed if the turbine runner is allowed to revolve freely without load and with the wicket gates wide open

Cd × a × √(2gH)

Cd × a × √(2g) × H2

Cd × a × √(2g) × H5/2

Cd × a × √(2g) × H3/2

Below it

At same point

Above it

Above or below depending on area of body

decreases

remains same

increases

shows erratic behaviour

It is at rest

It is incompressible

It has uniform viscosity

It has zero viscosity

(p/W) × (A/a)

(W/p) × (A/a)

(p/W) × (a/A)

(W/p) × (a/A)

cohesion

compressibility

adhesion

surface tension

Hyper-sonic flow

Sonic flow

Super-sonic flow

Sub-sonic flow

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

supersonics, as with projectile and jet propulsion

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

All of these

0.87

0.64

0.46

0.78