Main purpose of mean water training for rivers is________________?
(A) flood control
(B) to provide sufficient depth of water in navigable channels, during low water periods
(C) to preserve the channel in good shape by efficient disposal of suspended and bed load
(D) all of the above
The flow of water after spilling over the weir crest in chute spillway and side channel spillway respectively are_________________?
(A) at right angle and parallel to weir crest
(B) parallel and at right angle to weir crest
(C) parallel to weir crest in both
(D) at right angle to weir crest in both
Coefficient of discharge of an ogee spillway________________?
(A) depends on depth of approach and upstream slope
(B) depends on downstream apron interference and downstream submergence
(C) remains constant
(D) both (A) and (B)
In case of non-availability of space due to topography, the most suitable spillway is________________?
(A) straight drop spillway
(B) shaft spillway
(C) chute spillway
(D) ogee spillway
For the upstream face of an earthen dam, the most adverse condition for stability of slope is_______________?
(A) sudden drawdown
(B) steady seepage
(C) during construction
(D) sloughing of slope
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
The best unit duration of storm for a unit hydrograph is________________?
(A) 1 hour
(B) one-fourth of basin lag
(C) one-half of basin lag
(D) equal to basin lag
The unit hydrograph of a specified duration can be used to evaluate the hydrograph of storms of_________________?
(A) same duration only
(B) same and shorter duration
(C) same and longer duration
(D) any duration
The relation between probability (P) and recurrence interval (T) is given by_________________?
(A) PT = 1
(B) PT2 = 1
(C) P/T = 1
(D) P/T2 = 1
If d is the depth of the aquifer through which water is flowing, then the relationship between permeability k and transmissible T is given by_______________?
(A) T = kd
(B) T = k/d
(C) T= Vkd
(D) k= VTd