10. Practice Problem

Try these first

1. 1.

   What are the main assumptions of Bernoulli's equation?

   Hint

   Think of the acronym FISH.

2. 2.

   Identify two applications of Bernoulli's equation.

   Hint

   Consider devices that measure or influence fluid flow.

3. 3.

   What is the Bernoulli's equation primarily used for?

   • To measure flow
   • To calculate pressure changes
   • To define energy conservation in fluid flow

   Hint

   Think about what principles it emphasizes.

4. 4.

   True or False: The hydraulic grade line is always below the energy grade line.

   • True
   • False

   Hint

   Consider what each line represents.

5. 5.

   A fluid flows through a pipe with varying diameter. Knowing the pressure at the wider section is 100 kPa and the diameter at the narrowest point is 0.03 m, calculate the flow velocity assuming no losses due to friction.

   Hint

   Keep in mind, pressure differences will influence velocities significantly.

6. 6.

   A 500-liter tank drains through a 4 cm diameter hole at the base. With a pressure of 30 kPa at the surface, calculate the exit velocity and total discharge.

   Hint

   Evaluate the height difference as the liquid level drops.