Civil Engineering MCQs

Page No. 152

If there are two canals taking off from each flank of a river, then there will be____________________?


aone divide wall and one undersluice


b one divide wall and two undersluices


c two divide walls and one undersluice


dtwo divide walls and two undersluices



In a chute spillway, the flow is usually____________________?


auniform


bsubcritical


ccritical


dsuper critical


View Answer super critical

Which of the following spillways is least suitable for an earthen dam ?


aogee spillway


bchute spillway


cside channel spillway


dshaft spillway


View Answer ogee spillway

Seepage through foundation in an earthen dam is controlled by providing___________________?


arock toe


bhorizontal blanket


c impervious cut off


dchimney drain


View Answer impervious cut off

The most suitable material for the central impervious core of a zoned embankment type dam is_______________?


aclay


bcoarse sand


csilty clay


d clay mixed with fine sand



For wave action in dams, the maximum height of freeboard is generally taken to be equal to_______________?


a0.5 hw


b0.75 hw


c1.25 hw


d1.50 hw


View Answer 1.50 hw

When the reservoir is full, the maximum compressive force in a gravity dam is produced______________?


aat the toe


b at the heel


c within the middle third of base


dat centre of base


View Answer at the toe

Hydrodynamic pressure due to earthquake acts at a height of_________________?


a3H/47I above the base


b3H747t below the water surface


c4H/371 above the base


d4H737t below the water surface where H is the depth of water


View Answer 4H/371 above the base

The uplift pressure on the face of a drainage gallery in a dam is taken as_________________?


ahydrostatic pressure at toe


baverage of hydrostatic pressure at toe and heel


c two-third of hydrostatic pressure at toe plus one-third of hydrostatic pressure at heel


dnone of the above



When the upstream face of a gravity dam is vertical, then the intensity of water pressure at the water surface and at the base respectively will be_______________?


a 0 and wH212


bwH2/2and wH2/3


c wH and 0


d OandwII


View Answer OandwII

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