| A | B |
|---|
| Abrading | The process of removing material by applying friction |
| Adhesion | “The process of fastening two parts by the application of a third material such as glue |
| Annealing | “The process of softening metal for improved machinability or cold working by heating it to its critical temperature |
| Bar Chart | A graph in which the data is represented by horizontal or vertical bars. |
| Bernoulli’s Law | A change in the velocity of a fluid caused by a constriction produces an opposite change in pressure. |
| Boyle’s Law | The volume of a gas at a constant temperature is inversely proportional to its pressure. |
| Brittleness | The description for a material which is neither ductile nor malleable and will fail suddenly without warning. |
| Charles’ Law | The volume of a gas at a constant pressure is directly proportional to its temperature. |
| Chart | A sheet or map giving information in the form of a table |
| Closed loop | The output of a process is constantly monitored and the input adjusted according to feedback provided by sensors. |
| Compression | The effect of a force which tends to shorten an object in the direction of the force. |
| Conduction | The transfer of heat energy by physical contact. |
| Convection | The transfer of heat energy by moving a heated substance from one place to another. |
| Current | The total amount of electrons flowing through a circuit per unit time; measured in Amperes |
| Elastic Modulus (Young’s Modulus or the Modulus of Elasticity) | The ratio of stress to strain when deformation is totally elastic |
| Engineering | “A course of study followed by a professional career that involves complex analysis |
| Engineering technology | “A course of study followed by a professional career that involves testing |
| Extrusion | A forming process which uses force to push material through a die to give it a specific cross sectional shape. |
| Fastening | “The joining of two or more parts or materials through the application of mechanical devices |
| Ferrous | Related to iron having high magnetic permeability and high electrical resistivity |
| Freehand | Done without the use of tools or drawing equipment. |
| Firing Angle | The angle in between the horizontal and the initial velocity vector of a projectile |
| Forging | The working of a piece of metal into a predetermined shape by applying pressure or impact blows. |
| Free Body Diagram | A sketch of an object (body) of interest with all the surrounding objects stripped away and all of the forces acting on the object (body) shown. |
| Frequency distribution | The number of times that a certain characteristic occurs and is represented using a histogram. |
| Gear trains | “A set of gears used to transmit power |
| Hardening | The process by which a piece of metal is hardened by heating it to or above the critical temperature then cooling it rapidly |
| Histogram | A bar graph that shows the frequency of events occurring for a given range. |
| Isometric | A drawing projected so that the plane of projection of a three-dimensional drawing forms equal angles (120 degrees) to each of the three axes of the object. |
| Lathe | A machine tool in which the work material is rotated around a fixed horizontal axis and cut by a tool that is mounted on a movable carriage. |
| Line Graph | “A diagram |
| Microprocessor | “A complex digital chip that performs the computer functions of arithmetic |
| Milling | A process of cutting or material removal |
| Modulus of Elasticity | The slope of the line in the linear elastic region created by the stress on the object divided by the strain |
| Non-Destructive Testing | information is learned about the material/product via careful measurements and recordings without destroying the material/product. |
| Cabinet Oblique | A form of pictorial sketch in which two axes are at right angles to each other and half depth. |
| Cavalier Oblique | A form of pictorial sketch in which two axes are at right angles to each other and full depth. |
| Ohm’s Law | “The relationship of voltage |
| Open loop | A control system where there is no feedback circuitry. |
| Orthographic | Right angle projection. The views of an object are drawn in perpendicular planes to one another. |
| Pascal’s Law | “A law that states when a force is exerted on a fluid |
| Photo-resistor | A device that changes resistance according to light intensity. |
| Phototransistor | A semiconductor switch that produces an output when light falls on it. |
| Pictograph | Where symbols represent data on a graph. |
| Pie Chart | A chart that represents data in the form of slices from a 3-D circle. |
| R-Value | A numeric expression of thermal insulation. |
| Radiation | Transfer of heat by temporarily transforming the heat into electromagnetic waves |
| Resistance | a measure of the component's opposition to the flow of electric charge. Sketch |
| Tension | “A situation in which force is applied to an object that stretches |
| Threading | The process of cutting spiral mating surfaces for the purpose of providing mechanical tension between two parts. |
| Torque | A turning or twisting force that produces or tends to produce rotation or torsion |
| Ultimate Strength | The maximum stress a material withstands prior to necking. |
| Voltage | The electromotive force in a circuit. |
| Watt’s Law | The mathematical relationship expressing that power is the product of Voltage and Current |
