Hydraulic Radius and Wetted Perimeter

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1. The lower the hydraulic radius, the...

  • more water proportionally in contact with the bed and the banks
  • more erosion
  • less water proportionally in contact with the bed and the banks
  • faster the velocity
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Other questions in this quiz

2. The higher the hydraulic radius, the...

  • less deposition
  • more deposition
  • more friction
  • less erosion

3. What's the definition of the hydraulic radius?

  • The proportion of perimeter of a stream channel cross-section that's in contact with the water - proportion of water in contact with the bed and the banks
  • The total length of the bed and the bank sides in contact with the water in the channel
  • The proportion of water in contact with the bed and the banks of a river
  • The energy possessed by a river determined by the gradient

4. In the summer, the hydraulic radius is...

  • smaller than in winter
  • larger than in winter

5. If River A has a hydraulic radius of 3m and River B has a hydraulic radius of 2m, which has the fastest velocity?

  • River A
  • River B

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