Question Statement for 25-30: Water at 10°C flows in a 3-meter diameter semicircular channel half-full at an average vel

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Question Statement For 25 30 Water At 10 C Flows In A 3 Meter Diameter Semicircular Channel Half Full At An Average Vel 1 (34 KiB) Viewed 50 times

Question Statement for 25-30: Water at 10°C flows in a 3-meter diameter semicircular channel half-full at an average velocity of 2.5 m/s. 25. What is the hydraulic radius (m)? (a) 0.5 (b) 0.75 (c) 1.0 (d) 1.25 (e) 1.5 26. What is the Reynolds number? (a) 8.0 x 10^5 (b) 9.0 x 10^5 (c) 0.5 x 10^6 (d) 1.5 x 10^6 (e) 2.5 x 10^6 27. What is the hydraulic depth (m)? (a) 0.75 (b) 1.0 (c) 1.178 (d) 1.278 (e) 1.5 28. What is the Froude number (Fr)? (a) 0.50 (b) 0.75 (c) 1.0 (d) 1.25 (e) 1.5 29. Is the flow critical or subcritical (circle one)? (a) critical (b) subcritical 30. If mannings n = 0.013, what slope (%) is required to maintain the velocity of 2.5 m/s? (a) 0.10 (b) 0.15 (c) 0.25 (d) 0.50 (e) 1.0