CAD/CAM Final Exam Review UPDATED
ACTUAL Exam Questions and CORRECT
Answers
What is the one question that a solid modeling application needs to be able to answer? -
CORRECT ANSWER✔✔- Is an arbitrary 3D point (x,y,z) within the part or assembly or is it
outside the part or assembly?
Which of the following are solid modeling algorithms used to mathematically define whether
an arbitrary point is inside or outside of a solid?
a. Boundary Representation
b. Ray Tracing
c. Constructive Solid Geometry
d. Wire-Frame Model - CORRECT ANSWER✔✔- a. Boundary Representation
c. Constructive Solid Geometry
List at least three purposes of CAD software: - CORRECT ANSWER✔✔- 1. CAD systems
can be used to generate realistic renderings or visualizations of a part or assembly
2. CAD models are often used by finite element software to analysis a design
3. CAD files are used as a means to communicate design information between design teams
or between suppliers and their customers
Which of the following are required for drawings based on the GD&T standards (choose all
that apply)?
a. All dimensions that are not reference dimensions must have a tolerances
b. Plus/minus and limit tolerances are not allowed with GD&T.
c. Descriptions of manufacturing processes should be included whenever they are known.
d. Basic dimensions should be enclosed in a rectangle and their tolerances are controlled by a
feature control frame. - CORRECT ANSWER✔✔- a. All dimensions that are not reference
dimensions must have a tolerance.
d. Basic dimensions should be enclosed in a rectangle and their tolerances are controlled by a
feature control frame.
, Which symbol below is the third-angle projection symbol?
O |=|
|=| O - CORRECT ANSWER✔✔- O|=|
Which of the following geometric controls require at least one datum reference to be
specified (select all that apply)?
a. Angularity
b. Position
c. Flatness
d. Perpendicularity - CORRECT ANSWER✔✔- a. Angularity
b. Position
d. Perpendicularity
Which of the following are true for the datums listed in a feature control frame (select all that
apply)?
a. All datums must be listed in alphabetical order in the feature control frame
b. The order of the datums in the feature control frame is significant and impacts the
interpretation of the feature control frame
c. If datum features are needed in the feature control frame, there must be three datum
features included - CORRECT ANSWER✔✔- b. The order of the datums in the feature
control frame is significant and impacts the interpretation of the feature control frame
Which of the following are assumptions inherent with worst case tolerance stackup analysis
(choose all that apply)?
a. All variations that contribute to the tolerance stackup are normally distributed
b. All variations that contribute to the tolerance stackup are mean centered
c. Variations that contribute to the tolerance stackup are not statistically correlated
d. The tolerances are assumed to be linearly combined with each contribution having a
weighting of one - CORRECT ANSWER✔✔- d. The tolerances are assumed to be linearly
combined with each contribution having a weighting of one
Which of the following are assumptions inherent with statistical tolerance stackup analysis
(choose all that apply)?
ACTUAL Exam Questions and CORRECT
Answers
What is the one question that a solid modeling application needs to be able to answer? -
CORRECT ANSWER✔✔- Is an arbitrary 3D point (x,y,z) within the part or assembly or is it
outside the part or assembly?
Which of the following are solid modeling algorithms used to mathematically define whether
an arbitrary point is inside or outside of a solid?
a. Boundary Representation
b. Ray Tracing
c. Constructive Solid Geometry
d. Wire-Frame Model - CORRECT ANSWER✔✔- a. Boundary Representation
c. Constructive Solid Geometry
List at least three purposes of CAD software: - CORRECT ANSWER✔✔- 1. CAD systems
can be used to generate realistic renderings or visualizations of a part or assembly
2. CAD models are often used by finite element software to analysis a design
3. CAD files are used as a means to communicate design information between design teams
or between suppliers and their customers
Which of the following are required for drawings based on the GD&T standards (choose all
that apply)?
a. All dimensions that are not reference dimensions must have a tolerances
b. Plus/minus and limit tolerances are not allowed with GD&T.
c. Descriptions of manufacturing processes should be included whenever they are known.
d. Basic dimensions should be enclosed in a rectangle and their tolerances are controlled by a
feature control frame. - CORRECT ANSWER✔✔- a. All dimensions that are not reference
dimensions must have a tolerance.
d. Basic dimensions should be enclosed in a rectangle and their tolerances are controlled by a
feature control frame.
, Which symbol below is the third-angle projection symbol?
O |=|
|=| O - CORRECT ANSWER✔✔- O|=|
Which of the following geometric controls require at least one datum reference to be
specified (select all that apply)?
a. Angularity
b. Position
c. Flatness
d. Perpendicularity - CORRECT ANSWER✔✔- a. Angularity
b. Position
d. Perpendicularity
Which of the following are true for the datums listed in a feature control frame (select all that
apply)?
a. All datums must be listed in alphabetical order in the feature control frame
b. The order of the datums in the feature control frame is significant and impacts the
interpretation of the feature control frame
c. If datum features are needed in the feature control frame, there must be three datum
features included - CORRECT ANSWER✔✔- b. The order of the datums in the feature
control frame is significant and impacts the interpretation of the feature control frame
Which of the following are assumptions inherent with worst case tolerance stackup analysis
(choose all that apply)?
a. All variations that contribute to the tolerance stackup are normally distributed
b. All variations that contribute to the tolerance stackup are mean centered
c. Variations that contribute to the tolerance stackup are not statistically correlated
d. The tolerances are assumed to be linearly combined with each contribution having a
weighting of one - CORRECT ANSWER✔✔- d. The tolerances are assumed to be linearly
combined with each contribution having a weighting of one
Which of the following are assumptions inherent with statistical tolerance stackup analysis
(choose all that apply)?
