Cross Drainage Works Questions and Answers

Q: If the path of an irrigation canal is below the bed level of a natural stream, the type of cross-drainage structure provided is:

The structure is a Super Passage.Where the canal bed is below the bed of the natural stream, the stream is carried over the canal in a flume or trough, and the canal passes beneath. This is a super passage.An aqueduct is the reverse case, carrying the canal over the drainage when the canal is above the stream. A level crossing is used when both are at about the same level, and a sluice gate is a regulating device, not a cross-drainage work.

What is the purpose of a super-passage in irrigation engineering?

A.To cross the canal over the natural stream
B.To cross the canal below the natural stream
C.To cross the natural stream at relatively same level
D.To divert the water from the river to the canal

Exam Year(s)

DSSSB JE - 2023,

Answer: B

A super-passage is a cross-drainage work in which the canal is taken below the natural stream: the drainage passes over the canal in a trough, so the canal flows beneath it. The opposite arrangement, where the canal is carried over the drainage, is an aqueduct. Crossing at nearly the same level is done by a level crossing, and diverting water from a river into a canal is the function of a headworks or a weir, not of a super-passage.

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If the path of an irrigation canal is below the bed level of a natural stream, the type of cross-drainage structure provided is:

A.Sluice gate
B.Aqueduct
C.Super Passage
D.Level Crossing

Exam Year(s)

RSMSSB JE - 2025, RSMSSB JE Agriculture - 2025, RSMSSB - 2025,

Answer: C

The structure is a Super Passage.

Where the canal bed is below the bed of the natural stream, the stream is carried over the canal in a flume or trough, and the canal passes beneath. This is a super passage.

An aqueduct is the reverse case, carrying the canal over the drainage when the canal is above the stream. A level crossing is used when both are at about the same level, and a sluice gate is a regulating device, not a cross-drainage work.

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Cross Drainage Works Questions and Answers

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