Civil Engineering MCQs

Page No. 1

Two pipe systems can be said to be equivalent, when the following quantites are same______________?


a friction loss and flow


blength and diameter


c flow and length


dvelocity and diameter



At the centre line of a pipe flowing under pressure where the velocity gradient is zero, the shear stress will be_______________?


aminimum


bmaximum


czero


dcould be any value


View Answer could be any value

For pipes, laminar flow occurs when Roynolds number is__________________?


a less than 2000


bbetween 2000 and 4000


cmore than 4000


dless than 4000


View Answer less than 2000

The fluid forces considered in the Navier Stokes equation are__________________?


agravity, pressure and viscous


b gravity, pressure and turbulent


c pressure, viscous and turbulent


d gravity, viscous and turbulent



All the terms of energy in Bernoulli’s equation have dimension of_______________?


aenergy


bwork


cmass


dlength


View Answer length

Two dimensional flow occurs when___________________?


athe direction and magnitude of the velocity at all points are identical


b the velocity of successive fluid par-ticles, at any point, is the same at suc-cessive periods of time


c the magnitude and direction of the velocity do not change from point to point in the fluid


dthe fluid particles move in plane or parallel planes and the streamline pat-terns are identical in each plane



For hypersonic flow, the Mach number is___________________?


aunity


bgreater than unity


cgreater than 2


dgreater than 4


View Answer greater than 4

Normal depth in open channel flow is the depth of flow corresponding to_______________?


asteady flow


bunsteady flow


c laminar flow


duniform flow


View Answer uniform flow

Pitot tube is used for measurement of__________________?


apressure


bflow


cvelocity


ddsscharge


View Answer velocity

The total energy of each particle at various places in the case of perfect incompres sible fluid flowing in continuous sream________________?


akeeps on increasing


b keeps on decreasing


cremains constant


dunpredictable


View Answer remains constant

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