Specific Gravity and Fluid Properties

The weight per unit volume of fluid

Compressibility

Shear stress (τ) = µ ∂u/∂y

<p>Cohesion is the attraction between molecules of the same kind, while adhesion is the attraction between molecules of different kinds or between a fluid and a solid.</p> Signup and view all the answers

<p>Shear stress is not proportional to the rate of shear strain or velocity gradient</p> Signup and view all the answers

<p>m3/Kg</p> Signup and view all the answers

<p>The principle is that when the pressure inside the tube is greater than the outside pressure, the tube tends to straighten out, thus operating a simple pinion and sector arrangement and turning the pointer.</p> Signup and view all the answers

<p>It is used to estimate the pressure difference between two points in the same pipe or in different pipes.</p> Signup and view all the answers

<p>Total pressure is the force exerted by a static fluid on a surface, and it always acts normal to the surface.</p> Signup and view all the answers

<p>The manometric fluid must be lighter than the working fluid in the pipe or pipes.</p> Signup and view all the answers

<p>It is the point of application of the total pressure on the surface.</p> Signup and view all the answers

<p>It is used in the calculation of the total pressure on an immersed surface.</p> Signup and view all the answers

<p>P = ρ g a ħ = w a ħ</p> Signup and view all the answers

<p>No</p> Signup and view all the answers

<p>The upthrust of the liquid on the body must be greater than the gravitational force on the body</p> Signup and view all the answers

<p>Buoyancy</p> Signup and view all the answers

<p>The pressure intensity is the same at every point</p> Signup and view all the answers

<p>Downward</p> Signup and view all the answers

<p>P = ρ g a ħ, where 'h' represents the height of the fluid column.</p> Signup and view all the answers

<p>Archimedes' Principle states that the buoyant force (upthrust) experienced by a body is equal to the weight of the fluid displaced.</p> Signup and view all the answers

<p>Metacenter is the point about which a floating body starts oscillating when given a small angular displacement.</p> Signup and view all the answers

<p>Metacentric height is the distance between the center of gravity of a floating body and the metacenter.</p> Signup and view all the answers

<p>The three conditions are stable equilibrium, unstable equilibrium, and neutral equilibrium, characterized by the body returning to its initial position, moving further away from its initial position, or remaining in its new position, respectively, after a small disturbance.</p> Signup and view all the answers

<p>Stable equilibrium occurs when a small tilt to a floating body results in a righting couple that brings the body back to its initial position.</p> Signup and view all the answers

<p>Specific gravity is the density of a substance divided by the density of another substance, typically water for liquids and air for gases. For liquids, Specific Gravity (S) = Density of liquid / Density of water. For gases, Specific Gravity (S) = Density of gas / Density of air.</p> Signup and view all the answers

<p>Dynamic viscosity is the property of a fluid that offers resistance to movement of one layer of fluid over another adjacent layer of fluid. Kinematic viscosity is the ratio of dynamic viscosity to the density of the fluid.</p> Signup and view all the answers

<p>Newton's law of viscosity states that the shear force (F) acting between two layers of fluid is proportional to the difference in their velocities (du) and area (A), and inversely proportional to the distance (dy) between them. Mathematically, F = du * A / dy.</p> Signup and view all the answers

<p>Mass density is the mass of a substance per unit volume, whereas specific weight is the weight of a substance per unit volume.</p> Signup and view all the answers

<p>The unit of density is Kg/m3, and the density of water is 1000 Kg/m3.</p> Signup and view all the answers

<p>A fluid is a substance that has the capacity to flow, and it can be either a liquid or a gas.</p> Signup and view all the answers