Pick up the correct statement from the following:
A hydraulic structure is designed to withstand
In a barrage, the crest level is kept
For a standing crop, the consumptive use of water is equal to the depth of water
The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to
The main cause of silting up a channel,
The width of a meander belt is the transverse distance between
The length and width of a meander and also the width of the river, vary roughly as
The optimum depth of kor watering for a rice crop, is
The state of the soil when plants fail to extract sufficient water for their requirements, is
A fall in a canal bed is generally provided, if
In north Indian Plains, optimum depth of kor watering for wheat, is
The useful moisture of soil, is equal to its
The sensitivity of a rigid module, is
An outlet which maintains a constant discharge irrespective of fluctuation in the water levels of the supplying channel or water course, is known as
Regime conditions in a channel may occur if
If the optimum depth of kor watering for a crop is 15.cm, the outlet factor for the crop for four week period in hectares per cumec, is
Bligh's theory of seepage assumes
If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is
Useful soil moisture for plant growth, is
A deficit of sediments in flowing water may cause a river
Effective precipitation for a crop may be defined as
The field capacity of a soil is 25%, its permanent wilting point isand specific dry unity weight is 1.If the depth of root zone of a crop, iscm, the storage capacity of the soil, is
According to Khosla, the exist gradient of surface flow
Bed bars in a canal are provided
Canals taken off from ice-fed perennial rivers, are known
Canals constructed for draining off water from water logged areas, are known
If H and d are the water depth and drop in the bed level at a Sarda fall, the width B of the trapezoidal crest, is given by
The Lacey's regime velocity is proportional to
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