Agriculture MCQs

Page No. 165

Mostly the salt of calcium and Magnesium can not cause ________________?


aSalinity


bAlkalinity


cPoisoning


dTurbidity


View Answer Poisoning

An open cut given in a canal bank, suitably protected by stone pitching to the upland drainage water into the canal is called ___________________?


aInlet


bOutlet


cEntrance


dMixing


View Answer Inlet

When FSL of the canal is sufficiently above the bed level of drainage so that canal flows under syphonis action, the structure is called _____________________?


aSuper passage


bSyphon – Aqueduct


cCanal-syphon


dAqueduct


View Answer Canal-syphon

When the high flood level of the drain is sufficiently below the bed of the Canal that the drainage water flows freely under gravity, such structure is called___________________?


aAqueduct


bSyphon-Aqueduct


cCross-Drainage


dNon-gravity structure


View Answer Aqueduct

When the rate of change of discharge of outlet equals the rate of change of discharge of the channel, the out let is called __________________?


aSensitive


bFlexible


cProportional


dNon-Flexible


View Answer Proportional

A module or outlet in which discharge is fixed and limited, irrespective fluctuations in water levels in distributary is called _________________?


aModular


bNon-modular


cSemi-modular


dSemi-rigid


View Answer Modular

The total length of impervious floor on down stream of the hydraulic structure is determined by Bligh’s Theory__________________?


aLane


bDarcy


cKhosla


dAll are correct


View Answer Khosla

The inverted filter consists layer of materials of increasing ______________ from bottom to top?


aPiping


bUnder mining


cPermeability


dUp thrust pressure


View Answer Permeability

The invented filter is provided just after the end of concrete floor to reduce () possibility of _________________?


aPiping


bUnder mining


cUp thrust


dA and B are correct


View Answer A and B are correct

Khosla provided a seepage theory for design of Hydraulic structures called________________?


aTheory of seepage


bMethod of independent variables


cMethod of cutoffs


dCreep theory



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