Which of the following pipe bends will incur the largest head loss ?
Correct answer: A. U-bend
- A. U-bend
- B. 30° bend
- C. 45° bend
- D. 90° bend
Explanation
A U-bend turns the flow through approximately 180 degrees, producing a larger change in momentum and usually more fitting loss than 30, 45, or 90 degree bends. Its loss coefficient is therefore generally the largest among these choices.
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