Civil Engineering MCQs

Page No. 11

Operation of McLeod gauge used for low pressure measurement is based on the principle of_____________________?


agas law


b Boyle’s law


cCharle’s law


dPascal’s law


View Answer Boyle’s law

Pressure of the order of 10″‘ torr can be measured by_______________ ?


aBourdon tube


bPirani Gauge


cmicro-manometer


d ionisastion gauge


View Answer ionisastion gauge

Newton’s law of viscosity is a relationship between________________?


a shear stress anctthejiate of angular distortion


bshear stress and viscosity


c shear stress, velocity and viscosity


dpressure, velocity and viscosity



An odd shaped body weighing 7.5 kg and occupying 0.01 m3 volume will be completely submerged in a fluid having specific gravity of_________________?


a 1


b1.2


c 0.8


d0.75


View Answer 0.75

The atmospheric pressure with rise in altitude decreases____________________?


alinearly


bfirst slowly and then steeply


cfirst steeply and then gradually


dunpredictable



Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the_______________?


aforce of adhesion


bforce of cohesion


c force of friction


dforce of diffusion


View Answer force of cohesion

Surface energy per unit area of a surface is numerically equal to___________________?


aatmospheric pressure


bsurface tension


cforce of adhesion


dforce of cohesion


View Answer surface tension

The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is ap-proximately____________________?


a 1 mm


b 5 mm


c10 mm


d30 mm


View Answer 30 mm

The difference of pressure between the inside and outside of a liquid drop is________________?


ap = Txr


bp = T/r


c p = T/2r


dp = 2T/r


View Answer p = 2T/r

To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than_______________?


a2.4 m above the hydraulic gradient


b6.4 m above the hydraulic gradient


c10.0 m above the hydraulic gradient


d 5.0 above the hydraulic gradient



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