91. 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
92. The optimum depth of kor watering for a rice crop, is
93. Generally the weir is aligned at right angles to the direction of the main river current because
94. In a Sarda type fall, the rectangular crest, may be used for discharge up to
95. The meander pattern of a river is developed by
96. Pick up the correct statement from the following
97. The sinuosity of a meander is the ratio of
98. If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is
99. An aggrading river is a
100. The shape of recession limb of a hydrograph depends upon
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