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__________________?

Related Mcqs:

1. When the weight of weir balances the up lift pressure caused by the head of the water seeping below the weir bed is called ___________________?

   A. Cippollite weir
   B. Broad crested weir
   C. Gravity weir
   D. Non-gravity weir

2. The wall of masonry or concrete, constructed at 90° to the axis of weir to separate normal weir from under sluices is called____________________?

   A. Divide wall
   B. Retaining wall
   C. Toe wall
   D. All are correct

3. The rise in river water level at up stream due to construction of weir is called__________________?

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

4. The under sluices in a weir are provided, at the level of upstream floor dispose off the sediment deposited on downstream is called______________________?

   A. Under sluices
   B. Head sluices
   C. Scouring sluices
   D. Sluice gates

5. 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

6. When high flood passing down weir creating high up lift pressures and there is no flow in the canals, if such condition is taken for design and is called__________________?

   A. High flood level
   B. Dangerous condition
   C. Hydraulic design condition
   D. Worst condition

7. If the weir flood is designed continuous with divide piers as reinforced structure,such that the weight of divide piers, keep the structure safe against uplift, is called__________________?

   A. Non-gravity weir
   B. Gravity weir
   C. Sharp crested weir
   D. Rectangular weir

8. when ever a sloping face of river bank is protected by stone pitching against scour, the pitching is extended beyond the toe to the river side that is called__________________?

   A. Toe wall
   B. Launching apron
   C. Protective wall
   D. Guide bank

9. In a river the flood water dries up before it joins the sea or any other river, such river is called ________________?

   A. Flashy
   B. Virgin
   C. Tidal
   D. Deltaic

10. During the peak stage of river, there exist an out flow from river into the ground water reservoir, in such case river will be called _________________?

    A. Influent stream
    B. Effluent stream
    C. Storm water stream
    D. Seepage stream