The maximum average depth due to one day storm over an area of 100 km2 is 100 mm. Depth-Area-Duration (DAD. curves indicate that for the same area of 100 km2 the maximum average depth for a 3 hour storm will be__________________?
(A) 100 mm
(B) more than 100 mm
(C) less than 100 mm
(D) none of the above
A hyetograph is a graphical representation of___________________?
(A) rainfall intensity and time
(B) rainfall depth and time
(C) discharge and time
(D) cumulative rainfall and time
A runoff river plant_________________?
(A) is a medium head scheme
(B) generates power during peak hours only
(C) is suitable only on a perennial river
(D) has no pondage at all
A runoff river plant is____________?
(A) a low head scheme
(B) a medium head scheme
(C) a high head scheme
(D) none of the above
A river bend characterized by silting_______________?
(A) scouring on concave side
(B) silting on convex side
(C) scouring on convex side and on concave side
(D) scouring on concave side and silting on convex side
The maximum rainfall depth of 300 mm in 24 hours has a return period of 100 years. The probability of 24 hours rainfall equal to or greater than 300 mm occurring at least once in 10 years is given by_____________?
(A) (0.99)10
(B) 1 – (0.99)10
(C) (0.9)’00
(D) l-(0.9)100
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
The stream which does not have any base flow contribution is called________________?
(A) perennial stream
(B) intermittent stream
(C) ephemeral stream
(D) none of the above
If the demand line drawn from a ridge in a flow mass curve does not intersect the curve again, it indicates that______________?
(A) demand cannot be met by inflow
(B) reservoir was not full at the beginning
(C) both (A) and (B)
(D) none of the above
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)