Fluid mechanics & Properties of Fluids - Civil Engineering Quiz

Fluid mechanics Properties of fluids – Civil Engineering Quiz

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Pascal-second is the unit of

Pressure

Kinematic viscosty

Dynamic viscosity

Surface tension

Newton's law of viscosity relates

Intensity of pressure and rate of angular deformation

Shear stress and rate of angular deformation

Shear stress, viscosity and temperature

Viscosity and rate of angular deformation

The unit of Dynamic viscosity is

m^2/s

N.s/m^2

Pa.s/m^2

Kg.s^2/m^2

The increase in metacentric height

Increases stability

Decreases stability

Increases comfort for passengers

All of these

A perfect fluid (ideal fluid) is

A real fluid

The one which obeys perfect gas laws

Compressive and gaseous

Incompressible and frictionless

With increase in temperature ,viscosity of a fluid

Does not change

Always increases

Always decreases

Increases , if the fluid is a gas and decreases , if its a liquid

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

0.25

0.50

1.0

2.0

Which of the following pressure units represents the least pressure?

Millibar

mm of mercury

N/mm^2

kgf/cm^2

Which of the following velocity fields represents a possible fluid flow?

u=x, v=y

u=x^2, v=y^2

u=xy, v=x^2. y^2

u=x, v=-y

10.

Viscosity is a property that manifests

A fluid-solid boundaries only

Between two adjacent -fluid layers in relative motion

in uniform incompressible flows

Only in turbulent flows

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