If the R.L’s of canal bed level and high flood level of drainage are 212.0 m and 210.0 m respectively, then cross drainage work will be________________?

Related Mcqs:

1. The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in___________________?

   A. aqueduct and syphon aqueduct
   B. aqueduct and super passage
   C. super passage and canal syphon
   D. level crossing

2. The stage of river carrying a discharge of Q m7sec at a point is 10 m and slope of water surface is (1/4000). The discharge of a flood at the same point and same stage of 10 m with a water surface slope of(l/1000) will be________________?

   A. V2 Q m3/sec
   B. 0.5 Q mVsec
   C. 2 Q m3/sec
   D. 4 Q m3/sec

3. 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

4. Which of the following methods is used to estimate flood discharge based on high water marks left over in the past ?

   A. slope-area method
   B. area-velocity method
   C. moving boat method
   D. ultra-sonic method

5. The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?

   A. hydrostatic pressure at toe
   B. average of hydrostatic pressure at toe and heel
   C. two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel
   D. none of the above

6. The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be___________________?

   A. 70mm
   B. 80mm
   C. 90 mm
   D. 105 mm

7. The peak of a 4 hour flood hydrograph is 240 m3/sec . If the rainfall excess is 80 mm and base flow which is constant is 40 m3/sec, then the peak of 4-hours unit hydrograph will be__________________?

   A. 20 3/sec
   B. 25 m3/sec
   C. 30 m3/sec
   D. 35 m3/sec

8. For an annual flood series arranged in descending order of magnitude, the return for a magnitude listed at position period m in a total data N is________________?

   A. N/(m+l)
   B. m/(N+l)
   C. m/N
   D. (N+l)/m

9. If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be__________________?

   A. 1 + (0.9)010
   B. 1 – (0.9)°l0
   C. 1/(1-0.9°10)
   D. 1/(1+ 0.9010)

10. For a flood control reservoir, the effective storage is equal to_______________?

    A. useful storage – valley storage
    B. useful storage + surcharge storage
    C. useful storage + surcharge storage + valley storage
    D. useful storage + surcharge storage -valley storage