Question

1. On the momentum depth curve, does the static force dominate in the super or subcritical branch?

   supercritical

   subcritical

2. Conjugate depth pairs are super and subcritical roots for the conservation of enery.

   True

   False

  

3. A smaller Manning's n will decrease your critical depth.

True

False

4. Subcritical flow has upstream or downstream control?

upstream

downstream

Answer 1

1.Subcritical , because static force is depends on depth of flow and flow depth is more in subcritical flow as compare ti supercritical flow.

2. false , conjugate depth is defined for hydraulic jump and in jump formation , energy is not conserve.

3. False - critical depth does not depend on manning coefficient. but normal depth is depends on manning coefficient.

4.Downstream , Control section at which fixed relationship exist between depth and discharge. If flow is subcritical then disturbance wave will travel in both Upstream and downstream ,since disturbance wave travels upstream aslo hence subcritical flow has conrol section in downstream.

.

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