If a river or stream is collecting sediment and is building up dunes in its bed is called ______________________?

Related Mcqs:

1. 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

2. A water rise takes place on down stream of sloping glacis, when a stream of water moving with high velocity and low depth strikes another stream of flow moving with low velocity and high depth, such breakage in water surface is called______________?

   A. Water wave
   B. Water tide
   C. Hydraulic jump
   D. Afflux

3. 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

4. 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

5. A structure made near weirs and barrages to facilitate the migration of fish up stream or down stream is called __________________?

   A. Fish ladder
   B. Fish escape
   C. Fish pool
   D. Fish pond

6. That part of the flow in a stream comes from sub-soil or valley, may be beneath the top surface of channel bed is called__________________?

   A. Sub-surface flow
   B. Base flow
   C. Ground flow
   D. All are correct

7. A water pool is designed on the down stream of the hydraulic structure to dissipate the energy of falling water by providing a water cushion called ______________________?

   A. Water pool
   B. Cistern
   C. Down stream pond
   D. Water cushion

8. When seepage water after passing the ground water aquifer joins the surface stream, such stream will be called_____________________?

   A. Influent stream
   B. Effluent stream
   C. Rain stream
   D. Storm stream

9. Sediment particles smaller than 0.002 mm which do not settle in water are called____________________?

   A. Fine silt particles
   B. Fine clay particles
   C. Colloids
   D. All are correct

10. 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