Engineering Board Exam Reviewer · Fluid Mechanics · easy

A sudden rise in water surface when supercritical flow changes to subcritical flow is called a:

1. Water hammer
2. Hydraulic drop
3. Surge tank
4. Hydraulic jump

Answer

D. Hydraulic jump

Solution

Hydraulic jumps dissipate energy, e.g., below spillways.

More Fluid Mechanics questions

1. The hydraulic radius of a channel is defined as:
2. Manning's formula is used for:
3. The Hazen–Williams formula is commonly used for:
4. For pipes connected in parallel:
5. Losses in pipe fittings, valves, bends and sudden changes in cross section are called:
6. The chart that relates the friction factor to the Reynolds number and relative roughness is the:
7. For laminar flow in a circular pipe, the Darcy friction factor is:
8. The Darcy–Weisbach equation is used to compute:
9. The coefficient of discharge of an orifice is equal to:
10. The point of minimum area of a jet issuing from an orifice is called the:

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