Irrigation Engineering To control the silt entry into a distributary at head regulator, King's vanes are provided which are the walls Of R.C.C. or steel plate 8 cm thick Spaced at interval of 1½ times their heights Of height ⅓rd to ¼th the depth of water in the main canal All listed here Of R.C.C. or steel plate 8 cm thick Spaced at interval of 1½ times their heights Of height ⅓rd to ¼th the depth of water in the main canal All listed here ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering Retrogression of the bed level of a river downstream a weir, occurs due to Increase of the bed level Less percentage of silt Heavy impact of water Soft soil strata Increase of the bed level Less percentage of silt Heavy impact of water Soft soil strata ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering The structure constructed to allow drainage water to flow under pressure through an inverted syphon below a canal, is called Super-aqueduct Syphon Syphon aqueduct Super passage Super-aqueduct Syphon Syphon aqueduct Super passage ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering In a barrage, the crest level is kept Low with large gates Low with no gates High with large gates High with no gates Low with large gates Low with no gates High with large gates High with no gates ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering According to Lacey, in regime conditions Entire cross-section of the channel is generated at all points by the forces normal to the Both (a) and (b) Silt is kept in suspension by vertical components of eddies Neither (a) nor (b) Entire cross-section of the channel is generated at all points by the forces normal to the Both (a) and (b) Silt is kept in suspension by vertical components of eddies Neither (a) nor (b) ANSWER DOWNLOAD EXAMIANS APP
Irrigation Engineering If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then Total pressure on the surface is equal to ωx̅ All listed here Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅ Depth of the centre of pressure is 2/3H vertically below the surface Total pressure on the surface is equal to ωx̅ All listed here Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅ Depth of the centre of pressure is 2/3H vertically below the surface ANSWER DOWNLOAD EXAMIANS APP
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