PLTW IED EOC Review Terms with Complete Solutions
American Society of Mechanical Engineers (ASME) - Answer-1. A professional engineering organization that is known for setting codes and standards for mechanical devices in the United States. ASME drawing standards are found in the Y-14M publication...
PLTW IED EOC Review Terms with
Complete Solutions
American Society of Mechanical Engineers (ASME) - Answer-1. A professional
engineering organization that is known for setting codes and standards for mechanical
devices in the United States. ASME drawing standards are found in the Y-14M
publications. 2. The acronym for the American Society of Mechanical Engineers.
Tolerance - Answer-The total permissible variation in a size or location dimension.
Auxiliary View - Answer-An orthographic view of an object using a direction of sight
other than one of the six basic views (front, top, right-side, rear, bottom, left-side); used
to show a surface that is not parallel to any of the principal view planes.
Blind Hole - Answer-A hole that does not go completely through the workpiece.
Break Line - Answer-A line used to interrupt a drawing if an object will not fit on a
drawing sheet.
Cutting Plane Line - Answer-A line drawn on a view where a cut was made in order to
define the location of the imaginary section plane.
Degree of Freedom - Answer-The variables by which an object can move. In
assemblies, an object floating free in space with no constraints to another object can be
moved along three axes of translation and around three axes of rotation. Such a body is
said to have six degrees of freedom.
Detail Drawing - Answer-A dimensioned, working drawing of a single part. Also referred
to as part drawing.
Exploded Assembly - Answer-An assembly drawing in which parts are moved out of
position along an axis so that each individual part is visible.
Parts List - Answer-A list of materials or parts specified for a project. Also referred to as
a bill of materials or BOM.
Phantom Line - Answer-A line used to show the alternate positions of an object or
matching part without interfering with the main drawing.
Section Lines - Answer-Lines that are used to represent the material through which a
cut is made in order to show an interior sectional view.
, Sectional View - Answer-A drawing that shows the interior of an object as it would
appear if cut in half or quartered.
Innovation - Answer-An improvement of an existing technological product, system, or
method of doing something.
Invention - Answer-A new product, system, or process that has never existed before,
created by study and experimentation.
Design Brief - Answer-A written plan that identifies a problem to be solved, its criteria,
and its constraints. The design brief is used to encourage thinking of all aspects of a
problem before attempting a solution.
Design Process - Answer-A systematic problem-solving strategy, with criteria and
constraints, used to develop many possible solutions to solve a problem or satisfy
human needs and wants and to winnow (narrow) down the possible solutions to one
final choice.
Construction Line - Answer-Thin lines that serve as guides while sketching or drawing.
Hidden Line - Answer-A line type that represents an edge that is not directly visible,
because it is behind or beneath another surface.
Isometric Sketch - Answer-A form of pictorial sketch in which all three drawing axes
form equal angles of 120 degrees with the plane of projection.
Multiview Drawings - Answer-Views of an object projected onto two or more
orthographic planes.
Object Line - Answer-A heavy solid line used on a drawing to represent the outline of an
object.
Oblique Sketch - Answer-A type of sketch involving a combination of a flat, orthographic
front with depth lines receding at a selected angle, usually 45 degrees.
Orthographic Projection - Answer-A method of representing three-dimensional objects
on a plane having only length and breadth. Also referred to as Right Angle Projection.
Perspective Sketch - Answer-A form of pictorial sketch in which vanishing points are
used to provide the depth and distortion that is seen with the human eye. Perspective
drawings can be drawn using one, two, and three vanishing points.
Shading - Answer-The representation of light and shade on a drawing or map.
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