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20 questions
Name the six viewing directions that define the principal views in a multi-view drawing.
Frontal
Primary view
Top, Rear, Left, Right, Front, and Bottom
Dimensions
In orthographic projection, the ______ plane represents the projection for the top view of the object.
Frontal
Blocking
Primary view
Horizontal
In the ______________ method of orthographic projection, an imaginary glass box containing the object rests in the lower-right quadrant when looking at the profile view.
Unidirectional Dimensions
Object features
Third angle projection
Horizontal
The view in which an object feature appears in its true shape and size is the ________ of the feature.
Foreshortening
Primary view
Top, Rear, Left, Right, Front, Bottom
Horizontal
In orthographic projection, an object surface drawn in its true shape and size within a view.
Primary view
Foreshortening
Dimensions
True face
Objects that are drawn smaller than true size and shape in a view because they are not parallel to the projection plane are said to be _____________.
Primary view
Foreshortening
Dimensions
True face
When selecting object views to be drawn, why is it recommended to use the views showing the fewest
features as hidden lines?
Primary view
Foreshortening
Views of objects showing many hidden lines are normally used only when absolutely necessary for the complete understanding. Too many tend to make the drawing confusing.
True face
A drawing that has views in the proper orthographic order shows the top view above the _________.
Primary view
Foreshortening
Front (primary)
True face
The process of using orthographic projection in creating the views of a multiview drawing is
called ___________________________.
Primary view
Blocking in a drawing
Front (primary)
True face
Identify two methods used to project depth distances between the top and side views in
a multiview drawing.
45 degree projection or a compass
Primary view
Front (primary)
True face
A physical characteristic of an object
Negative Mass
Object features
Solid mass
Dimensions
Solid mass from which mass is removed to create an object.
Negative Mass
Object features
Solid mass
Positive mass
An angular dimension line used to point out special characteristic of an object.
Leader
Object features
Solid mass
Positive mass
A method of dimensioning in which dimensions are placed horizontal on the drawing sheet and read from the bottom of the drawing.
Leader
Object features
Unidirectional Dimensioning
Positive mass
Lettering or text on a drawing defining object sizes and locations.
Dimension
Object features
Dimensioning
Positive mass
Mass removed from an object to create a feature like a hole
Dimension
Object features
Negative mass
Positive mass
A method of dimensioning in which dimensions are placed horizontal on the drawing sheet and read from the bottom of the drawing.
Dimension
Object features
Unidirectional Dimensioning
Positive mass
A term used to describe a feature that is not parallel to the projection plane and its drawing smaller than true size and shape in an orthographic view.
Dimension
Object features
Unidirectional Dimensioning
Foreshortening
Process of using orthographic projection in creating the views of a multiview drawing
Horizontal
Blocking in
Primary view
Horizontal
Areas of unoccupied mass that exist within the overall limits of the original mass
Dimension
Object features
Negative mass
Positive mass
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