River training for depth is achieved by_______________?

Related Mcqs:

1. The maximum average depth due to one day storm over an area of 100 km2 is 100 mm. Depth-Area-Duration (DAD. curves indicate that for the same area of 100 km2 the maximum average depth for a 3 hour storm will be__________________?

   A. 100 mm
   B. more than 100 mm
   C. less than 100 mm
   D. none of the above

2. A river training work is generally required when the river is_______________?

   A. aggrading type
   B. degrading type
   C. meandering type
   D. both (A) and (B)

3. If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by_______________?

   A. T = kd
   B. T = k/d
   C. T= Vkd
   D. k= VTd

4. Main purpose of mean water training for rivers is________________?

   A. flood control
   B. to provide sufficient depth of water in navigable channels, during low water periods
   C. to preserve the channel in good shape by efficient disposal of suspended and bed load
   D. all of the above

5. The unit hydrograph due to a storm may be obtained by dividing the ordinates of the direct runoff hydrograph by_______________?

   A. direct runoff volume
   B. period of storm
   C. total rainfall
   D. none of the above

6. Seepage through embankments in an earthen dam is controlled by_______________?

   A. drainage filters
   B. relief wells
   C. drain trenches
   D. provision of downstream berms

7. The area between the isohyets 45 cm and 55 cm is 100 square km and between 55 cm and 65 cm is 150 square km. The average depth of annua! precipitation over the above basin of 250 square km will be__________________?

   A. 50 cm
   B. 55 cm
   C. 56 cm
   D. 60 cm

8. The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by______________?

   A. 4RS
   B. 11 RS
   C. 7RS
   D. 15 RS

9. The kor depth for rice is 190 mm and kor period is 14 days. The outlet factor for this will be_________________?

   A. 637 hectares/m3/sec
   B. 837 hectares/m3/sec
   C. 972 hectares/m3/sec
   D. 1172 hectares/m3/sec

10. Optimum depth of kor watering for rice is______________?

    A. 135 mm
    B. 165 mm
    C. 190 mm
    D. 215 mm