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Fluid Mechanics Practice Test: Non Uniform Flow in Channels
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Non Uniform Flow in Channels topics include: Gradually varied flow, gradually varied flow in wide rectangular channels, surface profiles characteristics, relation b/w water surface and channel bottom slopes, hydraulic jump, hydraulic jump types and location. Non-uniform flow in channels occurs when the velocity is not constant at a given instant. It can also be defined as when the flow depth changes at every cross-section along the flow direction for a given time.  Non-uniform flow can result from gradual or sudden changes in the cross sectional area. For example, in a river, water flowing... Show more
Fluid Mechanics Practice Test: Non Uniform Flow in Channels
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25 Questions

1. Calculate the head loss if the length of the back water curve is 25000m and Sf=0.00006.
2. When So > 0 and Yn < Yc, it is called as_______
3. Hydraulic jump depends upon
4. Calculate the value of Froude’s number for a rectangular channel having depth 1.5m and width 2.5m if the value of C = 30 and S0=1 in 1000.
5. Estimate the slope of energy line in a GVF having length of the back water curve 30000m and head loss of 1m.
6. Fluid height before the hydraulic jump is ________
7. What is the culvert bottom slope denoted as?
8. What is the hydraulic radius for a wide rectangular channel section?
9. Hydraulic jump is observed in _______
10. The value of slope of energy line of a wide rectangular channel is 3×10-4 and the bed slope of the channel is 1 in 1500 using chezy’s equation, calculate the uniform flow depth if the depth during GVF is 2m.
11. During a subcritical flow, what is value of Froude’s number?
12. During a critical flow, what is value of Froude’s number
13. Fluid speed before the hydraulic jump is ________
14. For a wide rectangular channel y>>B.
15. Estimate the value of Sf if the value of bed slope is 1 in 800 and and dEdx = 10-3m.
16. When So is equal to zero, it is called________
17. The dynamic equation for the slope of water surface in a GVF is not valid for super critical flow.
18. What is the expression for the length of the backwater curve?
19. Fluid flow after the hydraulic jump is ______
20. The dimensions of a rectangular channel section is2.5m×1m. Calculate the value of Sf if the bed slope of the channel is 1 in 600. Given: dy/dx=1.52×10-3m.
21. Calculate Sf for a triangular channel if the depth of the channel is 5m and the side slope is 1H:2V. Given: Q = 5.80 m3/s , C = 40.
22. Calculate the rate of change of depth of a triangular channel if the depth is 4m and the side slope is1H:2V. Given:S0 = 1 in 1500;Sf = 0.00004 and n=0.010.
23. Open channel flow takes place _______
24. Which of the following equations is true considering Chezy’s equation?
25. During a supercritical flow, what is value of Froude’s number?