Civil Engineering MCQs

Page No. 190

Stream lines and path lines always coincide in case of__________________?


a steady flow


blaminar flow


cuniform flow


dturbulent flow


View Answer steady flow

The motion of air mass in a tornado is a________________?


a free vortex motion


b forced vortex motion


c free vortex at center and forced vortex outside


d forced vortex at center and free vortex outside



The continuity equation pi V,A,= p2V2A2 is based on the following assumption regarding flow of fluid______________?


a steady flow


buniform flow


cincompressible flow


dfrictionless flow


View Answer steady flow

If the velocity is zero over half of the cross-sectional area and is uniform over the remaining half, then the momentum correction factor is_______________?


a 1


b4/3


c2


d4


View Answer 2

In a two dimensional incompressible steady flow around an airfoil, the stream lines are 2 cm apart at a great distance from the airfoil, where the velocity is 30 m/sec. The velocity near the airfoil, where the stream lines are 1.5 cm apart, is_________________?


a22.5 m/sec


b33 m/sec


c40 m/sec


d90 m/sec


View Answer 40 m/sec

The eddy viscosity for turbulent flow is______________?


aa function of temperature only


ba physical property of the fluid.


cdependent on the flow


d independent of the flow


View Answer dependent on the flow

The horizontal component of force on a curved surface is equal to the_______________?


aproduct of pressure intensity at its centroid and area


bforce on a vertical projection of the curved surface


c weight of liquid vertically above the curved surface


d force on the horizontal projection of the curved surface



An open cubical tank of 2 m side is filled with water. If the tank is rotated with an acceleration such that half of the water spills out, then the acceleration is equal to_______________?


ag/3


b g/2


c2g/3


dg


View Answer g

If a vessel containing liquid moves downward with a constant acceleration equal to ‘g’ then_____________?


a the pressure throughout the liquid mass is atmospheric


bthere will be vacuum in the liquid


c the pressure in the liquid mass is greater than hydrostatic pressure


dnone of the above



A rectangular block 2 m long, 1 m wide and 1 m deep floats in water, the depth of immersion being 0.5 m. If water weighs 10 kN/m3, then the weight of the block is________________?


a5kN


blOkN


c15 kN


d20 kN


View Answer lOkN

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