GATE CE 2022 Set 1 — Question 47

MSQ+2 / -0EasyCross Drainage StructuresCanals & Hydraulic StructuresWater Resources Engineering

Water Resources Engineering → Canals & Hydraulic Structures → Cross Drainage Structures

Last updated 5 September 2026

Question

In the context of cross-drainage structures, the correct statement(s) regarding the relative positions of a natural drain (stream/river) and an irrigation canal, is/are

Correct answer (A) In an aqueduct, natural drain water goes under the irrigation canal, whereas in a super-passage, natural drain water goes over the irrigation canal.; (B) In a level crossing, natural drain water goes through the irrigation canal. Solution Based on the definitions of cross-drainage structures: Aqueduct : Canal is carried over the drain. Thus, drain water goes under the canal. (Statement A is correct). Super-passage : Drain is carried over the canal. Thus, drain water goes over the canal. (Statement A is correct). Level Crossing : Canal and drain meet at the same level; their waters mix and pass through. (Statement B is correct). Canal Syphon : Drain is carried over the canal, but the canal is depressed to pass under the drain. Drain water goes over, not through. (Statement D is incorrect). Statement (C) is the exact opposite of the correct definitions. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (A) In an aqueduct, natural drain water goes under the irrigation canal, whereas in a super-passage, natural drain water goes over the irrigation canal.; (B) In a level crossing, natural drain water goes through the irrigation canal. Solution Based on the definitions of cross-drainage structures: Aqueduct : Canal is carried over the drain. Thus, drain water goes under the canal. (Statement A is correct). Super-passage : Drain is carried over the canal. Thus, drain water goes over the canal. (Statement A is correct). Level Crossing : Canal and drain meet at the same level; their waters mix and pass through. (Statement B is correct). Canal Syphon : Drain is carried over the canal, but the canal is depressed to pass under the drain. Drain water goes over, not through. (Statement D is incorrect). Statement (C) is the exact opposite of the correct definitions.

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