For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by______________?

Related Mcqs:

1. The rational formula for peak drainage discharge, was evolved by_________________?

   A. Fruhling
   B. Lloyd David
   C. Kuichling
   D. All of these

2. If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by_________________?

   A. Chezy
   B. Manning
   C. Bazin
   D. Kutter

3. The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by______________________?

   A. Bazin
   B. Crimp and Bruges
   C. William-Hazen
   D. Kutter

4. The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is__________________?

   A. 0.10 cumec
   B. 0.12 cumec
   C. 0.15 cumec
   D. 0.20 cumec

5. The gas evolved in sewers is________________?

   A. Carbondioxide
   B. Hydrogen sulphide
   C. Methane
   D. All of these

6. If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is_________________?

   A. 100 cm
   B. 90 cm
   C. 80 cm
   D. 50 cm

7. A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is_____________________?

   A. 2.30 m
   B. 2.40 m
   C. 2.45 m
   D. 2.50 m

8. When drainage to sewage ratio is 20, the peak dry weather flow is_______________?

   A. 20% of the design discharge
   B. Slightly less than 5% of the design discharge
   C. Slightly more than 5% of the design discharge
   D. None of these

9. For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?

   A. 10 cm
   B. 12 cm
   C. 15 cm
   D. 18 cm

10. The use of coarse screens for the disposal of sewage, may be dispensed with by______________?

    A. Comminutor
    B. Shredder
    C. Both A. and B.
    D. Neither A. nor B.