When the drain is over the canal, the structure provided is known as

Related MCQs

• When the levels are such that the F.S.L. of the canal is much above the bed level of the drainage trough, so that the canal runs under syphonic action under the trough, the structure provided is known as
• When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the under side of the supporting structure, the structure provided is super-passage.
• For a canal which irrigate the area directly, the fall should be provided at a location where the F.S.L. outstrips the gound level, but before the bed of the canal comes into filling.
• Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
• When the irrigation canal and the drain are at the same level, then the cross drainage work is achieved by providing a
• The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in
• A canal aligned roughly at right angles to the contours of the country is called ridge canal.
• A structure constructed in an irrigation canal for the purpose of wasting some of its water, is known as a
• When the full supply level (F.S.L.) of the canal is much below the bed level of the drainage trough, then the cross drainage provided is called syphon aqueduct.
• In case of syphon aqueduct, the H.F.L. of the drain is