Civil Engineering MCQs

Page No. 182

An ideal fluid is_______________?


a one which obeys Newton’s law of viscosity


bfrictionless and incompressible


cvery viscous


dfrictionless and compressible



If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?


a0.25


b 0.50


c1.0


dnone of the above


View Answer 1.0

The viscosity of a gas_______________?


adecreases with increase in temperature


bincreases with increase in temperature


c is independent of temperature


d is independent of pressure for very high pressure intensities



Newton’s law of viscosity relates________________?


aintensity of pressure and rate of angular deformation


bshear stress and rate of angular deformation


cshear stress, viscosity and temperature


d viscosity and rate of angular deformation



The position of center of pressure on a plane surface immersed vertically in a static mass of fluid is______________?


aat the centroid of the submerged area


b always above the centroid of the area


c always below the centroid of the area


dnone of the above



A vertical rectangular plane surface is submerged in water such that its top and bottom surfaces are 1.5 m and 6.0 m res-pectively below the free surface. The position of center of pressure below the free surface will be at a distance of________________?


a3.75 m


b 4.0 m


c 4.2m


d4.5m


View Answer 4.2m

A floating body is said to be in a state of stable equilibrium_________________?


awhen its metacentric height is zero


bwhen the metacentre is above the centre of gravity


cwhen the metacentre is below the centre of gravity


donly when its centre of gravity is below its centre of buoyancy



If the weight of a body immersed in a fluid exceeds the buoyant force, then the body will________________?


a rise until its weight equals the buoyant force


btend to move downward and it may finally sink


c float


dnone of the above



The increase in meta centric height_________________? 0 1. increases stability 2. decreases stability 3. increases comfort for passengers 4. decreases comfort for passengers The correct answer is?


a(1) and (3)


b(1)and(iv)


c(2) and (3)


d (2) and (4)


View Answer (1)and(iv)

The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as__________________?


acenter of gravity


bcenter of buoyancy


ccenter of pressure


d metacentre


View Answer center of pressure

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