Irrigation

Which of the following can be used as a meter fall ? A. vertical drop fall B. flumed glacis fall C. unflumed glacis fall D. all of the above

Which of the following canal outlets maintains a constant discharge ? A. non-modular outlet B. flexible outletC. rigid module D. none of the above

The drainage water intercepting the canal can be disposed of by passing the canal below the drainage in___________________? A. aqueduct and syphon aqueduct B. aqueduct and super passageC. super passage and canal syphon D. level crossing

The aqueduct or superpassage type of works are generally used when_______________? 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

Tortuosity of a meandering river is the ratio of__________________? A. meander belt to meander length B. meander length to meander beltC. curved length along the channel to the direct axial length of the river reach D. direct axial length of the river reach to curved length along the channel

The main cause of meandering is________________? A. presence of an excessive bed slope in the river B. degradationC. the extra turbulence generated by the excess of river sediment during floods D. none of the above

A river training work is generally required when the river is_______________? A. aggrading type B. degrading typeC. meandering type D. both (A) and (B)

Lining of irrigation channels________________? A. increases the waterlogging areaB. decreases the waterlogging area C. does not change the water logging area D. none of the above

The net speed under which the turbine reaches its peak efficiency is called_________________? A. design speed B. rated speed C. gross speed D. operating speed

The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________? A. design head B. rated head C. gross head D. operating head