Agriculture MCQs

Page No. 171

A structure constructed in channel width having narrow throat and raised floor in bottom, used for measuring discharge is called _____________________?


aCippoletti weir


bVenturimeter


cVenturiflume


dregulator


View Answer Venturiflume

The discharge through rectangular channel is maximum when Hydraulic mean depth m is equal to ______________?


adepth/ 3


bdepth/ 2


cdepth/ 4


d2/3 depth


View Answer depth/ 2

Bouyant force is equal to the ___________ of liquid displaced by the body in water mass?


aWeight


bVolume


cSpecific weight


dSpecific gravity


View Answer Volume

The specific weight of water at normal pressure of 760 mm, 4ºC temperature and at mean sea level is ______________________?


a960kg/m3


b1000kg/m3


c1100kg/m3


d1020kg/m3


View Answer 1000kg/m3

Torsional force does not act on ____________________?


aSteel


bLiquids


cSoil


dWood


View Answer Liquids

Friction head loss in open channels is determined by_________________?


aChezy’s formula


bDarcy weisbach equation


cKutter’s formula


dPilot tube



Total energy line (T.E.L) represents the sum of ________________________?


aPressure head + kinetic head and datum head


bVelocity head + kinetic head + datum head


cVelocity head + potential head + datum head


dThe energy head + potential head + datum head



The unit of kinetic viscosity is equivalent to ______________________?


acm2/sec


bcm/sec2


ccm/sec


dAll are correct


View Answer cm2/sec

The ratio of change of discharge of an outlet to the rate of change in level of water surface in distributary at its normal depth is called ____________________?


aSensitivity


bFlexibility


cDurability


dFlow ability


View Answer Sensitivity

The most economical central angle of an arch dam is made at ___________________?


a123


b133


c143


d153


View Answer 133

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