EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
ADDA Drafting Certification:
Competency 9 (Revolutions) Exam
Questions and Answers |100% Pass
revolution - Answer✔✔-rotation of an object to show true length at an angle in one view (foreshortens
rest); used to eliminate need for auxiliary view; view that is revolved is always the one where the axis is
shown as a point and the view is not changed in shape and size; in views where the axis shows a line, the
dimension parallel to the axis remains unchanged
viewing plane - Answer✔✔-plane from which an object is viewed (front, top, right-side, etc.)
primary revolution - Answer✔✔-revolution that occurs at another angle after the initial revolution
successive revolutions - Answer✔✔-view projected from a primary revolution or another revolutions
plane - Answer✔✔-three non-linear points in space, two non-parallel intersecting vectors, two parallel
vectors, or a line and a point non on line
true size - Answer✔✔-surface that is shown in its actual size; plane is parallel to the plane of projection
path of revolution - Answer✔✔-
true length line - Answer✔✔-ALWAYS parallel to the reference plane in ALL adjacent views; actual size of
line; to find, draw view of line where reference plane is parallel to an adjacent view of the line
true angle - Answer✔✔-angle formed by two intersecting planes shown in its actual measure
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, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
dihedral angle - Answer✔✔-angle between two intersecting planes
rectified length - Answer✔✔-(Determining the length of an irregular arc segment?)
helix - Answer✔✔-curve created by line winding around a shaft; curving path that a point would follow if
it were to travel in an even spiral around a cylinder and parallel to the axis of that cylinder
revolved view - Answer✔✔-view created from revolution of an object
axis of revolution - Answer✔✔-line from which angle of revolution is measured; shown as either point or
line, depending on view
fold line - Answer✔✔-The place where perpendicular viewing planes meet each other along the straight
edge of intersection
reference plane - Answer✔✔-What is a plane that is parallel to the inclined surfaces; shown as true
length edge; used to lay off dimensions to develop auxiliary and revolved views
parallel; perpendicular - Answer✔✔-If a line is positioned ________ to a projection plane and the line of
sight is ________ to that projection plane, then the line will appear as true length.
point - Answer✔✔-If the line of sight is parallel to a true-length line, the line will appear as a ________
view in the adjacent view (any adjacent view of a point of view of a line will show the true length of the
line.)
edges; configuration - Answer✔✔-Planar surfaces of any shape always appear either as ________ or as
surfaces of similar ________.
edge - Answer✔✔-If a line in a plane appears as a point, the plane appears as a(n) ________.
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FIRST PUBLISH SEPTEMBER 2024
ADDA Drafting Certification:
Competency 9 (Revolutions) Exam
Questions and Answers |100% Pass
revolution - Answer✔✔-rotation of an object to show true length at an angle in one view (foreshortens
rest); used to eliminate need for auxiliary view; view that is revolved is always the one where the axis is
shown as a point and the view is not changed in shape and size; in views where the axis shows a line, the
dimension parallel to the axis remains unchanged
viewing plane - Answer✔✔-plane from which an object is viewed (front, top, right-side, etc.)
primary revolution - Answer✔✔-revolution that occurs at another angle after the initial revolution
successive revolutions - Answer✔✔-view projected from a primary revolution or another revolutions
plane - Answer✔✔-three non-linear points in space, two non-parallel intersecting vectors, two parallel
vectors, or a line and a point non on line
true size - Answer✔✔-surface that is shown in its actual size; plane is parallel to the plane of projection
path of revolution - Answer✔✔-
true length line - Answer✔✔-ALWAYS parallel to the reference plane in ALL adjacent views; actual size of
line; to find, draw view of line where reference plane is parallel to an adjacent view of the line
true angle - Answer✔✔-angle formed by two intersecting planes shown in its actual measure
Page 1/5
, EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED
FIRST PUBLISH SEPTEMBER 2024
dihedral angle - Answer✔✔-angle between two intersecting planes
rectified length - Answer✔✔-(Determining the length of an irregular arc segment?)
helix - Answer✔✔-curve created by line winding around a shaft; curving path that a point would follow if
it were to travel in an even spiral around a cylinder and parallel to the axis of that cylinder
revolved view - Answer✔✔-view created from revolution of an object
axis of revolution - Answer✔✔-line from which angle of revolution is measured; shown as either point or
line, depending on view
fold line - Answer✔✔-The place where perpendicular viewing planes meet each other along the straight
edge of intersection
reference plane - Answer✔✔-What is a plane that is parallel to the inclined surfaces; shown as true
length edge; used to lay off dimensions to develop auxiliary and revolved views
parallel; perpendicular - Answer✔✔-If a line is positioned ________ to a projection plane and the line of
sight is ________ to that projection plane, then the line will appear as true length.
point - Answer✔✔-If the line of sight is parallel to a true-length line, the line will appear as a ________
view in the adjacent view (any adjacent view of a point of view of a line will show the true length of the
line.)
edges; configuration - Answer✔✔-Planar surfaces of any shape always appear either as ________ or as
surfaces of similar ________.
edge - Answer✔✔-If a line in a plane appears as a point, the plane appears as a(n) ________.
Page 2/5
