If the over land flow from the critical point to the drain is 8 km and the difference in level is 12.4 m, the inlet time is________________?

Related Mcqs:

1. If the length of overland flow from the critical point to the mouth of drain is 13.58 km and difference in level between the critical point and drain mouth is 10 m, the inlet time is___________________?

   A. 2 hours
   B. 4 hours
   C. 6 hours
   D. 8 hours

2. 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

3. For the open drain (N = 0.025) shown in the below figure, the discharge is________________?

   A. 26.88 cumecs
   B. 27.88 cumecs
   C. 28.88 cumecs
   D. 29.88 cumecs

4. The bottom of the sewage inlet chamber of septic tanks, is provided an outward slope_________________?

   A. 1 in 5
   B. 1 in 10
   C. 1 in 15
   D. 1 in 20

5. The difference of pressure between the inside and outside of a liquid drop is________________?

   A.p = Txr
   B.p = T/r
   C. p = T/2r
   D. p = 2T/r
   E. none of the above

6. The flow velocity in detritus tanks is________________?

   A. 0.05 m/sec
   B. 0.09 m/sec
   C. 1.25 m/sec
   D. None of these

7. The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is___________________?

   A. 1.5
   B. 2.0
   C. 3.0
   D. 4.0

8. For trunk sewers more than 1.25 m in diameter, the ratio of the maximum daily sewage flow to the average daily sewage flow is assumed________________?

   A. 1.5
   B. 2.0
   C. 2.5
   D. 3.0

9. The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is____________________?

   A. 1.5
   B. 2.0
   C. 3.0
   D. 4.0

10. You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at___________________?

    A. Full depth
    B. Half full
    C. Two third full
    D. Three fourth full