Optimum depth of kor watering for rice is______________?

Related Mcqs:

1. 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

2. 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

3. 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

4. River training for depth is achieved by_______________?

   A. groynes
   B. construction of dykes or leavees
   C. both (A) and (B)
   D. groynes and bandalling

5. If D is the depth of scour below original bed, then the width of launching apron is generally taken as________________?

   A. 1.2 D
   B. 1.5 D
   C. 2.0 D
   D. 2.5 D

6. The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by_____________?

   A. (0.99)10
   B. 1 – (0.99)10
   C. (0.9)’00
   D. l-(0.9)100

7. 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

8. 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

9. The depth of water required to bring the soil moisture content of a given soil upto its field capacity is called_________________?

   A. hygroscopic water
   B. equivalent moisture
   C. soil moisture deficiency
   D. pellicular water

10. For a proportional outlet, the flexibility is______________?

    A. zero
    B. between zero and 1
    C. 1
    D. greater than 1