HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

(p/W) × (A/a)

(W/p) × (a/A)

(W/p) × (A/a)

(p/W) × (a/A)

The pressure on the bottom of the wall is maximum

The pressure on the bottom of the wall is zero

The pressure on the wall at the liquid level is zero, and on the bottom of the wall is maximum

The pressure on the wall at the liquid level is minimum

Less than 4000

Less than 2000

Between 2000 and 4000

More than 4000

Inversely proportional to (radius)2

Directly proportional to (radius)4

Inversely proportional to (radius)4

Directly proportional to (radius)2

30 mm

20 mm

10 mm

5 mm

Inlet guide blades

Vaned diffusion casing

Adjustable blades

Backward curved blades

Decreases

Remain same

None of these

Increases

More than

Same as

Less than

None of these

They are suitable even for low water heads

They have slow speeds

They give constant efficiency, even if the discharge is not constant

All of these

Vena contracta

Critical point

Stagnation point

None of the listed here