Fluid Mechanics Units and Properties

<p>Weight of fluid / Volume of fluid (C)</p> Signup and view all the answers

<p>Density of a fluid to its density of a standard fluid (C)</p> Signup and view all the answers

<p>Pascal (D)</p> Signup and view all the answers

<p>Work done per second (B)</p> Signup and view all the answers

<p>Volume per unit mass of fluid (C)</p> Signup and view all the answers

<p>Cavitation (A)</p> Signup and view all the answers

<p>Absolute Pressure (C)</p> Signup and view all the answers

<p>To measure pressure at a point in a fluid (D)</p> Signup and view all the answers

<p>Reduced pressure above the liquid (B)</p> Signup and view all the answers

<p>Simple Manometer (C)</p> Signup and view all the answers

<p>Results in surface erosion (B)</p> Signup and view all the answers

<p>It includes atmospheric pressure in its measurement. (B)</p> Signup and view all the answers

<p>Vacuum Pressure (A)</p> Signup and view all the answers

<p>Reduced pressure in the liquid (D)</p> Signup and view all the answers

<p>U-tube manometer (B)</p> Signup and view all the answers

<p>The resistance to the movement of one layer of fluid over another. (D)</p> Signup and view all the answers

<p>The ratio between dynamic viscosity and density of fluid. (A)</p> Signup and view all the answers

<p>Fluid with a constant viscosity and proportional shear stress. (D)</p> Signup and view all the answers

<p>P = 8σ/d (D)</p> Signup and view all the answers

<p>The liquid rises above the level of the surrounding liquid. (A)</p> Signup and view all the answers

<p>Non-Newtonian fluid (D)</p> Signup and view all the answers

<p>The tensile force acting on the surface of a liquid in contact with another liquid. (C)</p> Signup and view all the answers

<p>Surface tension, density of the liquid, and diameter of the tube. (B)</p> Signup and view all the answers

<p>Weight density of liquid = S × weight density of water. (A)</p> Signup and view all the answers

<p>Compressible and having no viscosity. (B)</p> Signup and view all the answers

<p>Pressure intensity is inversely proportional to the diameter of the jet. (D)</p> Signup and view all the answers

<p>Smaller angle results in lower capillary rise. (C)</p> Signup and view all the answers

<p>τ = μ (du/dy) (D)</p> Signup and view all the answers

<p>Mass per unit volume (A)</p> Signup and view all the answers

<p>Newton per square meter (B)</p> Signup and view all the answers

<p>N/m3 (A)</p> Signup and view all the answers

<p>Force x Distance (B)</p> Signup and view all the answers

<p>Volume of fluid per unit mass (B)</p> Signup and view all the answers

<p>Force multiplied by distance (C)</p> Signup and view all the answers

<p>Weight per unit volume of a fluid (D)</p> Signup and view all the answers

<p>Cavitation (D)</p> Signup and view all the answers

<p>Gauge pressure (D)</p> Signup and view all the answers

<p>Differential manometer (C)</p> Signup and view all the answers

<p>When the pressure is reduced to its vapor pressure (C)</p> Signup and view all the answers

<p>Collapse of vapor bubbles (D)</p> Signup and view all the answers

<p>Manometer (C)</p> Signup and view all the answers

<p>It is the pressure measured with respect to a complete vacuum. (C)</p> Signup and view all the answers

<p>Boiling of the liquid (A)</p> Signup and view all the answers

<p>Pressure below atmospheric pressure (C)</p> Signup and view all the answers

<p>Bourdon tube pressure gauge (B)</p> Signup and view all the answers

<p>By multiplying specific gravity with the density of water. (A)</p> Signup and view all the answers

<p>They have a constant viscosity at all shear rates. (D)</p> Signup and view all the answers

<p>p = 2σ / d (C)</p> Signup and view all the answers

<p>Capillary action (D)</p> Signup and view all the answers

<p>Not proportional at all. (C)</p> Signup and view all the answers

<p>Surface tension of the liquid (B)</p> Signup and view all the answers

<p>Ideal fluid (A)</p> Signup and view all the answers

<p>Surface tension force (D)</p> Signup and view all the answers

<p>P = 8σ / d (B)</p> Signup and view all the answers

<p>The ratio of dynamic viscosity to density of fluid. (B)</p> Signup and view all the answers

<p>h = 4σ / ρg (A)</p> Signup and view all the answers

<p>It is greater than the outside pressure. (B)</p> Signup and view all the answers

<p>It possesses viscosity. (B)</p> Signup and view all the answers

<p>Adhesive forces between the liquid and tube walls. (D)</p> Signup and view all the answers

Mass per unit volume of a fluid.

Kilograms per cubic meter (kg/m³).

Weight per unit volume of a fluid.

Volume per unit mass of a fluid.

Ratio of the density of a fluid to the density of a standard fluid (usually water for liquids, air for gases).

Unit of force, equal to the force required to accelerate 1 kg of mass by 1 m/s².

Unit of pressure, equal to 1 Newton per square meter.

Unit of work or energy, equal to 1 Newton-meter.

The pressure exerted by vapor molecules above a liquid surface in a closed system at a given temperature.

The formation of vapor bubbles in a flowing liquid when pressure drops below the liquid's vapor pressure, followed by their collapse in high-pressure regions.

Pressure measured with reference to a complete vacuum.

Pressure measured relative to atmospheric pressure.

Pressure below atmospheric pressure.

A device for measuring pressure by balancing fluid columns.

A manometer with one open end to the atmosphere.

A manometer measuring the pressure difference between two points.

The temperature at which a liquid's vapor pressure equals the surrounding pressure.

The pressure exerted by the atmosphere.

The ratio of the weight density of a liquid or gas to the weight density of water (for liquids) or air (for gases).

The weight of a substance per unit volume.

A fluid's resistance to flow.

A fluid whose shear stress is directly proportional to the rate of shear strain.

A fluid whose shear stress is not directly proportional to the rate of shear strain.

The ratio of dynamic viscosity to the fluid's density.

Shear stress is proportional to the rate of shear strain.

An imaginary fluid with no viscosity and is compressible

A fluid with viscosity.

The tendency of liquid surfaces to shrink into the minimum surface area possible.

The ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity.

The upward movement of a liquid in a narrow tube.

The downward movement of a liquid in a narrow tube.

The fundamental dimensions are the basic measurable characteristics of an object. The four primary dimensions are mass (M), length (L), time (T), and temperature (t).

The unit of density is kilograms per cubic meter (kg/m³).

A Newton is the unit of force. One Newton is the force needed to accelerate a 1 kg mass by 1 m/s². It's based on Newton's second law of motion (F = ma).

A Pascal is the unit of pressure. It's the pressure exerted by 1 Newton of force applied over 1 square meter.

A Joule is the unit of work or energy. It's the work done when a force of 1 Newton moves an object 1 meter.

A Watt is the unit of power. It represents the amount of work done per second. One Watt is equivalent to one Joule per second.

Specific weight refers to the weight per unit volume of a fluid. It's the weight density.

Specific volume represents the volume occupied by a unit mass of a fluid. It's the inverse of density.

The ratio of the weight density of a liquid to the weight density of water.

The ratio of the weight density of a gas to the weight density of air.

The weight of a liquid per unit volume. It can be calculated using the formula: Weight density = S * Weight density of water = S * 1000 kg/m³ * 9.81 N/m³

The mass of a liquid per unit volume. It can be calculated using the formula: Density = S * Density of water = S * 1000 kg/m³

The height of the liquid rise is influenced by factors like: surface tension of the liquid, diameter of the tube, and density of the liquid.