A. high flood drainage discharge is small
B. high flood drainage discharge is large and short lived
C. high flood drainage discharge is large and continues for a long time
D. none of the above
Related Mcqs:
- For wave action in dams, the maximum height of freeboard is generally taken to be equal to_______________?
A. 0.5 hw
B. 0.75 hw
C. 1.25 hw
D. 1.50 hwwhere hw is height of wave
- If D is the depth of scour below original bed, then the width of launching apron is generally taken as________________?
A. 1.2 D
B. 1.5 D
C. 2.0 D
D. 2.5 D - A river training work is generally required when the river is_______________?
A. aggrading type
B. degrading type
C. meandering type
D. both (A) and (B) - Generally the weir is aligned at right angles to the direction of the main river current because______________?
A. it ensures less length of the weir
B. it gives better discharging capacity
C. it is economical
D. all of the above - The most suitable material for the central impervious core of a zoned embankment type dam is_______________?
A. clay
B. coarse sand
C. silty clay
D. clay mixed with fine sand - A straight glacis type fall with a baffle platform and a baffle wall is called_____________?
A. vertical dropfall
B. glacis fall
C. Montague type fall
D. inglis fall - In a Sarda type fall, rectangular crest is used for discharge upto______________?
A. 6 cumecs
B. 10 cumecs
C. 14 cumecs
D. 20 cumecs - Hydrodynamic pressure due to earthquake acts at a height of_________________?
A. 3H/47I above the base
B. 3H747t below the water surface
C. 4H/371 above the base
D. 4H737t below the water surface where H is the depth of water - The most suitable chemical which can be applied to the water surface for reducing evaporation is________________?
A. methyl alcohol
B. ethyl alcohol
C. cetyl alcohol
D. butyl alcohol - The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by______________?
A. 4RS
B. 11 RS
C. 7RS
D. 15 RS
