4. Equations of Energy

Try these first

1. 1.

   What is Bernoulli's equation used for?

   Hint

   Think about energy in fluids.

2. 2.

   Define Hydraulic Grade Line.

   Hint

   Consider the pressure and elevation component.

3. 3.

   What are the conditions required for applying Bernoulli's equation?

   • Frictionless and steady flow
   • Viscous and unsteady flow
   • Only compressible fluids

   Hint

   Think about the flow characteristics.

4. 4.

   Bernoulli's equation is based on which principle?

   • True
   • False

   Hint

   Recall what Bernoulli's equation signifies.

5. 5.

   A tank is filled with water to a height of 10 meters. Determine the speed of water exiting from a small hole at the bottom of the tank.

   Hint

   What happens as the water flows from a height?

6. 6.

   Given a pitot tube collects velocity data from a fluid flowing at 2 m/s and a static pressure reading of 30 kPa, calculate the dynamic pressure.

   Hint

   What is dynamic pressure related to flow velocity?