# Orthographic Projections by HC11112619235

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```									Orthographic
Projections
Test Review
Orthographic Projections

 Which term matches         Coincide
the definition below:      Entities
   Fold line
A theoretical line           Foreshortened
between two views          Line
where viewing
planes fold                Line of sight
   Line precedence
   Multiview drawing
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
To form a mental         True size
picture or image       Visualize
 Frontal plane
 Profile plane
 Horizontal plane
Orthographic Projections

 Which term matches          Coincide
the definition below:       Entities
   Fold line
A drawing of an object        Foreshortened
that shows the exact        Line
size by looking
straight at the object      Line of sight
from one to six             Line precedence
positions                   Multiview drawing
Orthographic Projections

 Which term matches         Coincide
the definition below:      Entities
   Fold line
To appear shorter to         Foreshortened
the eye than it            Line
actually is
   Line of sight
   Line precedence
   Multiview drawing
Orthographic Projections

 Which term matches            Coincide
the definition below:         Entities
   Fold line
Elements of primitives          Foreshortened
of lines, text, circles,      Line
points, arc, and
spline used in                Line of sight
creating objects in           Line precedence
Orthographic Projections

 Which term matches  Height
the definition below:  Width
 Depth
Distance between two  Round
profile planes (left   Fillet
side to right side)
 Runout
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
Used for top and         True size
bottom views           Visualize
 Frontal plane
 Profile plane
 Horizontal plane
Orthographic Projections

 Which term matches         Coincide
the definition below:      Entities
   Fold line
Direction from which an      Foreshortened
object is being            Line
viewed
   Line of sight
   Line precedence
   Multiview drawing
Orthographic Projections

 List the principal views in orthographic
projection
Top

Front              Right Side
Orthographic Projections

 Which term matches         Coincide
the definition below:      Entities
   Fold line
To match up identically      Foreshortened
   Line
   Line of sight
   Line precedence
   Multiview drawing
Orthographic Projections

 Which term matches  Height
the definition below:  Width
 Depth
Distance between two  Round
horizontal planes      Fillet
(bottom to top)
 Runout
Orthographic Projections

 Which term matches        Coincide
the definition below:     Entities
   Fold line
Straight element that is    Foreshortened
generated by a            Line
moving point and has
extension only along      Line of sight
the path of the point     Line precedence
   Multiview drawing
Orthographic Projections

 Which term matches  Height
the definition below:  Width
 Depth
Small rounded inside       Round
(interior) corner of an  Fillet
object
 Runout
Orthographic Projections

 List all the views possible in orthographic
projection.
Bottom
Front
Rear
Top
Right Side
Left Side
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
To take from one point  True size
of view and put in     Visualize
another view
 Frontal plane
 Profile plane
 Horizontal plane
Orthographic Projections

 Which term matches         Coincide
the definition below:      Entities
   Fold line
Lines that are more          Foreshortened
important to show          Line
than others
   Line of sight
   Line precedence
   Multiview drawing
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
Lines used to extend     True size
from one view to the  Visualize
next view
 Frontal plane
 Profile plane
 Horizontal plane
Orthographic Projections

 Which term matches  Height
the definition below:  Width
 Depth
Distance between two  Round
frontal planes (front  Fillet
to back)
 Runout
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
A surface or line that is  True size
shown in its actual      Visualize
size
 Frontal plane
 Profile plane
 Horizontal plane
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
Right angle projection;  True size
projector lines are     Visualize
parallel to each other
and perpendicular to  Frontal plane
the plane of            Profile plane
projection              Horizontal plane
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
Used for front and rear  True size
views                  Visualize
 Frontal plane
 Profile plane
 Horizontal plane
Orthographic Projections

 Which term matches  Orthographic projection
the definition below:  Projection lines
 Transfer
Used for right and left  True size
side views             Visualize
 Frontal plane
 Profile plane
 Horizontal plane
Orthographic Projections

 Which term matches  Height
the definition below:  Width
 Depth
Intersection of a fillet or  Round
round with another         Fillet
surface which
produces an                Runout
extension of the
curved surface
Orthographic Projections

 Using the picture below, identify the
planes of projection.

Horizontal
Plane
Orthographic Projections

 Which term matches  Height
the definition below:  Width
 Depth
Small rounded outside  Round
(external) corner of   Fillet
an object
 Runout
Orthographic Projections

 The picture below is an example of which
type of plane? ___________________
oblique
Orthographic Projections

 In the picture to the
right, A is pointing to
round
a(n) ____________.
 B is pointing to a(n)
fillet
____________.
Orthographic Projections

    What are the basic rules when selecting
the front view?
1.   Best describes the shape.
2.   Contains the least number of hidden
lines.
3.   Usually the longest view.
4.   Shows the object in its normal position.
Orthographic Projections

 First-angle                Third-angle
projection                  Projection
 All views are              All views are
projected onto planes       projected onto planes
located behind the          lying between the
object.                     object and the viewer.
 Used in European           Used in the United
and Asian countries         States, Canada, and
other countries.
Orthographic Projections

 The picture below is an example of which
type of plane? ___________________
normal
Orthographic Projections

Rules of line precedence
1. Visible lines precedes all other lines
Orthographic Projections

Rules of line precedence
1. Visible lines precedes all other lines
Orthographic Projections

Rules of line precedence
2. Hidden line precedes a center line
Orthographic Projections

Rules of line precedence
3. Cutting plane line precedes a center
line.
Orthographic Projections

Rules of line precedence
4. Center line follows all other line types.
Orthographic Projections

 Pick the correct view after looking at the
object below.
Orthographic Projections

 Pick the correct view after looking at the
object below.
Orthographic Projections

 Pick the correct view after looking at the
object below.
Orthographic Projections

 Pick the correct view after looking at the
object below.
Orthographic Projections

 Pick the correct view after looking at the
object below.
Orthographic Projections

True/ False:

The maximum number of views that can be
drawn of an object is 8.
False
The correct number is 6.
Orthographic Projections

True/ False:

Fillets are slightly rounded outside curves
at corners.
False
They are rounds. Fillets are at the
inside corners of an object.
Orthographic Projections

True/ False:

A hidden line precedes a center line.
True
Orthographic Projections

 The picture below is an example of which
type of plane? ___________________
inclined
Orthographic Projections

True/ False:

The bottom view usually shows the most
hidden features.
False
The bottom view will not
necessarily have anything
hidden. It just depends on the
object and the number of views
necessary to describe it.
Orthographic Projections

True/ False:

If possible in a multiview drawing, all
surfaces should be shown true size.
True
Orthographic Projections

True/ False:

First-angle projection is the principal
multiview projection used in the United
States.
False
Third-angle projection is the
projection style used in the U.S.
Orthographic Projections

True/ False:

In an orthographic view, some planes may
be foreshortened.
True
Orthographic Projections

True/ False:

A first-angle projection show the front view,
the right side view, and the top view.
False
First angle projection shows the
top view, front view and left side
view.
Orthographic Projections

True/ False:

Construction lines are vital when drafting
manually, but unnecessary when using a
False
Construction lines are vital either
way.
Orthographic Projections

True/ False:

The front view should have the most
hidden lines.
False
The front view should have the
least number of hidden lines.
Orthographic Projections

True/ False:

It is possible to have a drawing of an object
with only one view.
True
Orthographic Projections
True/ False:

Always use three views to adequately
describe an object.
False
Three views are not always
enough to describe an object.
Sometimes an object only needs
one or two views and other times
it may need all six views.
Orthographic Projections

True/ False:

Orthographic Projection is one method to
create a multiview drawing.
True
Orthographic Projections

True/ False:

A hidden line precedes a center line.
True
Orthographic Projections

True/ False:

A multiview drawing represents the shape
of an object using two or more views.
True
Orthographic Projections

True/ False:

When possible, a multiview should show
the surface of the object in its true size
and shape.
True
Orthographic Projections
The most natural position of use ____.
a. is one of the criteria used for choosing a
front view
b. should be the right side view
c. should be shown with a view
enlargement
d. is the common multiview orientation
e. none of the above
Orthographic Projections
If a centerline, a hidden line, and an object
line all occur at the same space in a
multiview drawing, which line takes
precedence?
a. centerline
b. hidden line
c. object line
d. cutting plane line
e. not enough information to assess an
Orthographic Projections

True/ False:

A multiview drawing represents the shape
of an object using two or more views.
True
Orthographic Projections
True/ False:

The front view should always have the longest
dimensions.
False
The longest dimensions is only one of the
rules for picking the front view. If the view
has the most hidden lines and does not
show the shape the best, then the fact that
it has the longest dimensions does not
qualify it for the front view.
Orthographic Projections

True/ False:

The result of a multiview projection is a
multiview drawing.
True
Orthographic Projections

True/ False:

Runouts combine flat and rounded
surfaces.
True
Orthographic Projections
The height of an object shown in a
multiview drawing is common between
____.
a. the front view and the top view
b. the front view and the right side view
c. the top view and the right side view
d. the rear view and the top view
e. the rear view and the bottom view
Orthographic Projections
The depth of an object shown in a
multiview drawing is common between
____.
a. the front view and the top view
b. the front view and the right side view
c. the top view and the right side view
d. the rear view and the left side view
e. the rear view and the bottom view
Orthographic Projections

True/ False:

A drawing with a single view is always an
inadequate way to describe an object.
False
An object may require up to 6
Orthographic Projections
The Three primary views are:
a. Right, left, top
b. Top, front , right
c. Right, Back, Bottom
d. Bottom,Top, Left
Orthographic Projections

True/ False:

One View Drawings are used for objects
that have a small thickness like a washer
True
Orthographic Projections

True/ False:

Hidden lines are not necessary in a first-
angle projection.
False
Hidden lines are needed whenever
there is something hidden in a
view, regardless of projection
style.
Orthographic Projections

True/ False:

The front view is usually the most important
view.
True
Orthographic Projections

True/ False:

Third angle projection is the type used in
the United States.
True
Orthographic Projections
Which of the following is not a factor when
selecting a front view of an object? The
front view should ____.
a.have the longest dimension
b.represent the most natural position of use
c. have the fewest hidden features
d.be the most stable and natural position
e.none of the above
Orthographic Projections
Which of the following can be used instead
of a 45° projection line to transfer
measurements from one view to another
view?
a.accurate measurements
b.a compass
c. dividers
d.both b and c
e.all of the above
Orthographic Projections
Hidden lines ____.
a. take precedence over centerline
b. should be kept to a minimum in front
views
c. should not be shown in partial views
d. both a and b
e. all of the above
Orthographic Projections
If there are six sides to a box, how many
possible sides are necessary to view an
object?
a. 1
b. 2
c. 4
d. 6
Orthographic Projections
One of the guidelines on selecting the front
view is:
a. Conic surface
b. Least descriptive shape or features
c. Most descriptive shape or features
d. Planar surface
Orthographic Projections
One of the guidelines on selecting the front
view is:
a. Conic surface
b. Longest side is used if equally
descriptive
c. Shortest side is used if equally
descriptive
d. Planar surface
Orthographic Projections
Round objects typically have how many
views
a. 1
b. 2
c. 3
d. 4
Orthographic Projections
The angle of projection between the top
and right side views is
a. 30 degrees
b. 45 degrees
c. 60 degrees
d. 90 degrees
Orthographic Projections

True/ False:

A hidden line precedes a visible line.
False
A visible lines precedes all other
line types.

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