GATE CE 2018 Set 2 — Question 22

MCQ+1 / -0.33EasySteady-State Well HydraulicsHydrographs & GroundwaterWater Resources EngineeringConfined & Unconfined Aquifers

Water Resources Engineering → Hydrographs & Groundwater → Confined & Unconfined Aquifers

Last updated 5 September 2026

Question

Dupuit’s assumptions are valid for

Correct answer (D) unconfined aquifer Solution Dupuit's assumptions (also known as Dupuit-Forchheimer assumptions) are used to simplify the analysis of steady-state flow in unconfined aquifers . The primary assumptions are: 1. The hydraulic gradient is equal to the slope of the free surface (water table). 2. For small water table gradients, the flow lines are horizontal and the equipotential lines are vertical. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (D) unconfined aquifer Solution Dupuit's assumptions (also known as Dupuit-Forchheimer assumptions) are used to simplify the analysis of steady-state flow in unconfined aquifers . The primary assumptions are: 1. The hydraulic gradient is equal to the slope of the free surface (water table). 2. For small water table gradients, the flow lines are horizontal and the equipotential lines are vertical.

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