For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by______________?
(A) Kinchling
(B) Lloyd Davis
(C) Frubling
(D) All the above
The most effective arrangement for diverting excess storm water into a natural drainage, is____________________?
(A) Leaping weir
(B) Overflow weir
(C) Siphon spill way
(D) None of these
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
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
If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of__________________?
(A) Degradation
(B) Active decomposition
(C) Recovery
(D) Cleaner water
In sewers the highest non-scouring velocity is achieved in________________?
(A) Glazed bricks sewers
(B) Cast iron sewers
(C) Cement concrete sewers
(D) Stone ware sewers
The suitable cross-section of sewers to carry combined flow, is__________________?
(A) Circular
(B) Egg shaped
(C) Rectangular
(D) Horse shoe shaped
The minimum recommended diameter of sewers, is_________________?
(A) 5 cm
(B) 10 cm
(C) 15 cm
(D) 20 cm
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________________?
(A) 2 hours
(B) 3 hours
(C) 4 hours
(D) 5 hours
The settlement of a particle in sedimentation tank, is affected by_____________________?
(A) Velocity of flow
(B) Viscosity of water
(C) Size and shape of solid
(D) All the above