When the hydraulic jump is in a moving form it is called

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BPSC AE Paper VI Civil 19 Dec 2024 Official Paper
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  1. Negative surge
  2. Accelerated surge
  3. Turbulent surge
  4. Positive surge

Answer (Detailed Solution Below)

Option 4 : Positive surge
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Detailed Solution

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Explanation:

  • A hydraulic jump occurs when there is a sudden transition from supercritical flow to subcritical flow, resulting in an abrupt rise in the water surface.

  • When this hydraulic jump moves in the direction of flow, it is referred to as a positive surge.

  • A positive surge is essentially a moving hydraulic jump, characterized by:

    • An increase in water depth,

    • A decrease in flow velocity, and

    • Propagation in the same direction as the flow.

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