When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called _____________________?

Related Mcqs:

1. When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________?

   A. Aqueduct
   B. Syphon-aqueduct
   C. Cross-Drainage
   D. Non-gravity structure

2. When FSL of the canal is sufficiently below the bottom of the drain, so that water flows freely under gravity, such structures is called_____________________?

   A. Syphon
   B. Syphon – Aqueduct
   C. Super-passage
   D. Canal-syphon

3. An open cut in the canal bank. with bed and sides to escape canal water through a lead channel to mix water in a nearby drain is called _____________________?

   A. Inlet
   B. Out let
   C. Module
   D. Exit

4. A structure provided when a large canal a big drainage channel approach other practically at the same level is called__________________?

   A. Super passage
   B. Level crossing
   C. Canal crossing
   D. Drainage crossing

5. An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called ___________________?

   A. Inlet
   B. Out let
   C. entrance
   D. Mixing

6. The level above the or below the sea level which is also called zero level or datum is called ___________________?

   A. Reduce level
   B. Positive level
   C. Soil level
   D. Negative level

7. A regulator is water controlling structure, it is provided at the head of canal to supply water from parent canal to the branch channel is called_______________________?

   A. Head Regulator
   B. Cross-Regulator
   C. Escape
   D. All are correct

8. The water level required on the upstream side of a canal head regulator, so as to feed the off-taking canal with its full supply is called_________________?

   A. HFL
   B. FSL
   C. Pond level
   D. Canal level

9. When a weir is constructed, the downstream .bed of the river goes on eroding and consequently causes progressive lowering of the bed on downstream of weir called__________________?

   A. Retrogression
   B. Lowering down of bed
   C. Ponding on down stream
   D. All are correct

10. The structures, which are constructed on the river bed upstream of head regulator. With this clear water enters in canal such structures are called______________________?

    A. Silt excluders
    B. Silt ejectors
    C. Vortex pipes
    D. Silt control structures