1.12. Example Problem on Major and Minor Losses

Try these first

1. 1.

   What is the formula for calculating head loss due to sudden enlargement?

   Hint

   Think about which variable represents the velocity in the narrower section.

2. 2.

   What value is generally assigned to K_Exit?

   Hint

   Remember what total energy loss means in fluid mechanics.

3. 3.

   What is the typical value of K_Entrance?

   • 0.1
   • 0.5
   • 1.0

   Hint

   Think about typical entrance shapes.

4. 4.

   True or False: Minor losses can be ignored in long pipelines.

   • True
   • False

   Hint

   Consider how losses add up.

5. 5.

   A 10-inch diameter pipe undergoes a sudden enlargement to 20 inches. If the inlet velocity is 5 ft/s, calculate K_L and the expected head loss if the flow is 10 ft long.

   Hint

   Ensure you apply the area ratios accurately for K_L.

6. 6.

   Given a system of pipes with abrupt fittings leading to energy loss, derive a formula combining total head losses (both major and minor).

   Hint

   Consider how each component adds to the sum of losses.