A 70% index of wetness means_______________?

Related Mcqs:

1. A 6 hours storm had 4 cm of rainfall and the resulting runoff was 2 cm. If <j) index remains at the same value, the runoff due to 10 cm of rainfall in 12 hours in the catchment is___________________?

   A. 4.5 cm
   B. 6.0 cm
   C. 7.5 cm
   D. 9.0 cm

2. The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be________________?

   A. 50 mm
   B. 60 mm
   C. 90 mm
   D. 140 mm

3. For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of_______________?

   A. rabi or kharif
   B. rabi and kharif or sugarcane
   C. rabi and sugarcane or kharif and sugarcane
   D. rabi or kharif or sugarcane

4. 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

5. According to Khosla’s theory, the exit gradient in the absence of a downstream cutoff is_____________?

   A. 0
   B. unity
   C. infinity
   D. very large

6. 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

7. The stream which does not have any base flow contribution is called________________?

   A. perennial stream
   B. intermittent stream
   C. ephemeral stream
   D. none of the above

8. Tortuosity of a meandering river is the ratio of__________________?

   A. meander belt to meander length
   B. meander length to meander belt
   C. curved length along the channel to the direct axial length of the river reach
   D. direct axial length of the river reach to curved length along the channel

9. As compared to gravity dams, earthen dams__________________?

   A. are costlier
   B. are less susceptible to failure
   C. require sound rock foundations
   D. require less skilled labour

10. Variability of rainfall is____________?

    1) largest in regions of high rainfall
    2) largest in coastal areas
    3) largest in regions of scanty rainfall
    The correct answer is?

    A. only (1)
    B. (1) and (2)
    C. only (3)
    D. (2) and (3)