(Le/D) for couplings and unions would be_______________?
Correct answer: D. Negligible
- A. 60
- B. 200
- C. 350
- D. Negligible
Explanation
Couplings and unions provide a nearly straight-through passage, so their additional resistance is normally treated as negligible in equivalent-length calculations. Valves, elbows and tees, in contrast, require appreciable L_e/D values.
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