Agriculture MCQs

Page No. 179

The angle between a head regulator and entrance of water, for smooth entry of water in a canal is kept as _________________?


a90°


b100°


c110°


d120°


View Answer 110°

A flow of water for a certain discharge when total energy of flow i.e. sum of potential, kinetic and pressure energies is minimum is called_______________________?


aShooting flow


bCritical flow


cSub-critical flow


dNormal flow


View Answer Critical flow

The depth of root zone for rice crop is about___________________?


a70 cm


b80 cm


c90 cm


d100 cm


View Answer 90 cm

hail is precipitation in the form of balls or lumps of ice of size greater than _______________ formed by alternate freezing & melting?


a5 mm diameter


b10 mm diameter


c15 mm diameter


d20 mm diameter


View Answer 5 mm diameter

An instrument used for measuring pressure head, generally made up of a small pipe tapped into the side of conduit is called ___________________?


aPilot tube


bPiezometer


cManometer


dAll are correct


View Answer Piezometer

The precipitation that occurs because of frontal disturbances during the movement of barometric low pressure is called ____________________?


aHurricane


bCyclonic


cOrographic


dConvective


View Answer Cyclonic

The forces coming over the gravity dam is mainly resisted by ___________________?


aWater pressure


bUplift pressure


cSelf weight of the dam


dAll of the above



The last length of the river before it falls into the sea is known as __________________?


aMountainous stage


bTrough stage


cDelta stage


dSub-mountainous stage


View Answer Delta stage

The velocity in a large canal or channel measured at a depth of ___________________ gives the mean velocity using the current meter?


a0.6


b0.5


c0.6 depth


d0.5 depth


View Answer 0.6 depth

A fluid is a substance that ____________________?


aAlways expands until it fills any container


bIs partially incompressible


cCan not remain at rest under the action of any shear force


dCan not be subjected to shear force



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