Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid is the ratio of

Increase in pressure to the volumetric strain
Increase in volume to the viscosity of fluid
Shear stress to shear strain
Critical velocity to the viscosity of fluid

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Hydraulics and Fluid Mechanics in ME
When an ideal fluid flows past a sphere

lowest pressure intensity occurs at rear stagnation point
lowest pressure intensity occurs at front stagnation point
total drag is zero
highest intensity of pressure occurs around the circumference at right angles to flow

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Hydraulics and Fluid Mechanics in ME
When a body is placed over a liquid, it will sink down if

Gravitational force is equal to the up-thrust of the liquid
Gravitational force is less than the up-thrust of the liquid
None of these
Gravitational force is more than the up-thrust of the liquid

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