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GATE 2016 CE (CE1) – Question 25

Hydrology · Reservoir capacity, flood estimation and routing, surface runoff models · 1 mark · Multiple choice

Match flood-routing methods P hydrologic and Q hydraulic with equations 1 continuity, 2 momentum and 3 energy.

  1. P: 1; Q: 1, 2 and 3
  2. P: 1; Q: 1 and 2 only
  3. P: 1 and 2; Q: 1 only
  4. P: 1 and 2; Q: 1 and 2

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Show answer and explanation

Correct answer: (B) P: 1; Q: 1 and 2 only

Explanation

Hydrologic routing uses continuity together with a storage–discharge relation to represent the reach or reservoir. Hydraulic routing additionally uses momentum conservation, typically through the Saint-Venant equations. The listed continuity-only versus continuity-and-momentum pair is therefore **B**.