61
Hydrograph is the graphical representation of
Answer: runoff and time
Questions
62
For supplying water to rabi crop, kharif crop and sugarcane, the channel is designed for a capacity equal to the greater of the water requirement of
Answer: rabi and sugarcane or kharif and sugarcane
63
The “outlet discharge factor” is the duty at the head of
Answer: watercourse
65
The value of Sodium Absorption Ratio for high sodium water lies between
Answer: 18 to 26
68
The normal annual precipitation at stations X, A, B and C are 700 mm, 1000 mm, 900 mm and 800 mm respectively. If the storm precipitation at three station A, B and C were 100 mm, 90 mm and 80 mm respectively, then the storm precipitation for station X will be
Answer: 70mm
69
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
Answer: 90 mm
70
If it rains between 2 P.M. and 3 P.M. and the entire basin area just starts contributing water at 3 P.M. to the outlet, then time of concentration will be
Answer: 60 minutes
