2.3. Example Problem Solution Steps

Try these first

1. 1.

   What is the purpose of a differential manometer?

   Hint

   Think of where you might need to measure pressure changes.

2. 2.

   Define specific gravity.

   Hint

   What fluid do we use as a reference?

3. 3.

   What is the purpose of a differential manometer?

   • To measure flow rate
   • To measure pressure difference
   • To measure fluid height

   Hint

   It is something we need to calculate how much pressure there's between two areas.

4. 4.

   True or False: Specific gravity is a measure of density.

   • True
   • False

   Hint

   Does it compare one fluid to another?

5. 5.

   A tank contains 10 m of water and 3 m of oil (SG = 0.9) above it. Calculate the pressure at the bottom.

   Hint

   Use p = ρgh for both fluids.

6. 6.

   You have a manometer measuring pressure between oil and water. If oil height is 0.05m and water is 0.15m, what is the pressure difference?

   Hint

   Formulate knowing that pressure difference = density * height difference.