What is the head loss in psi for a pipe with a water velocity of 2.95 fps?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $25.99Unlock all

Prepare for the Washington State WDM 1 with flashcards, multiple choice questions, hints, and explanations. Get exam ready now!

Multiple Choice

What is the head loss in psi for a pipe with a water velocity of 2.95 fps?

Explanation:
Velocity head represents how much pressure corresponds to the fluid’s motion. It’s given by h_f = v^2 / (2g) in feet of water, and to turn that into psi you divide by 2.31 (since 1 psi equals 2.31 ft of water). With v = 2.95 ft/s, v^2 = 8.7025. Using g ≈ 32.2 ft/s^2, 2g ≈ 64.4, so h_f ≈ 8.7025 / 64.4 ≈ 0.135 ft. Converting to psi: 0.135 ft / 2.31 ≈ 0.0585 psi. So the head loss is about 0.058 psi, which corresponds to the closest option. The other values would imply different head or velocity assumptions, not matching this velocity head calculation.

Velocity head represents how much pressure corresponds to the fluid’s motion. It’s given by h_f = v^2 / (2g) in feet of water, and to turn that into psi you divide by 2.31 (since 1 psi equals 2.31 ft of water).

With v = 2.95 ft/s, v^2 = 8.7025. Using g ≈ 32.2 ft/s^2, 2g ≈ 64.4, so h_f ≈ 8.7025 / 64.4 ≈ 0.135 ft. Converting to psi: 0.135 ft / 2.31 ≈ 0.0585 psi.

So the head loss is about 0.058 psi, which corresponds to the closest option. The other values would imply different head or velocity assumptions, not matching this velocity head calculation.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy