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

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

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Hydraulics and Fluid Mechanics in ME
A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is

zero
one-half its value when cylinder was full
cannot be predicted from the given data
one-fourth its value when cylinder was full

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