Agriculture MCQs

Page No. 166

According to Mr. Khosla, the seeping water creates undermining and the undermining starts from__________________?


aDown stream to up stream


bUp stream to down stream


cTop to bottom


dBottom to top



To keep the Hydraulic structure safe against undermining the ________________ should be safe?


aExit gradient


bHydraulic gradient


cCreep length


dCritical exit gradient


View Answer Exit gradient

The loss of head H/ L is proportional to the length of creep. There fore the loss of head per unit creep length is called ______________________?


aHydraulic gradient


bHead loss


cCreep length


dExit gradient


View Answer Hydraulic gradient

According to Blight, the percolating water seeps along the lower contour of the hydraulic structure, the length traversed by this water is called ______________________?


aCreep length


bSeeping length


cPiping


dUndermining


View Answer Creep length

The hydraulic jump is formed on down stream of toe of glacis for the purpose to dissipate surplus energy of the flowing water, the nature and strength of jump depends upon a Number called______________________?


aReynolds


bFroude No


cWebber


dDarcy,s law


View Answer Froude No

A water rise takes place on down stream of sloping glacis, when a stream of water moving with high velocity and low depth strikes another stream of flow moving with low velocity and high depth, such breakage in water surface is called______________?


aWater wave


bWater tide


cHydraulic jump


dAfflux


View Answer Hydraulic jump

When high flood passing down weir creating high up lift pressures and there is no flow in the canals, if such condition is taken for design and is called__________________?


aHigh flood level


bHydraulic design condition


cWorst condition


dDangerous condition


View Answer Worst condition

A regulator is water controlling structure, it is provided at the head of canal to supply water from parent canal to the branch channel is called_______________________?


aHead Regulator


bCross Regulator


cEscape


dAll are correct


View Answer Head Regulator

The various works constructed on river side to control the flow and pass it safely from hydraulic structures are called ___________________?


aRiver Controlling works


bRiver Training works


cMarginal Embankment


dGuide banks


View Answer River Training works

The under sluices in a weir are provided, at the level of upstream floor dispose off the sediment deposited on downstream is called______________________?


aUnder sluices


bHead sluices


cScouring sluices


dSluice sluices


View Answer Scouring sluices

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