MAE 1351 Intro to Engineering Design
Exam 2 Questions & Answers (Grade
A+)
components -
correct answer ✅objects that make up a system; identical to its
reference geometry
instances -
correct answer ✅in assemblies modeling; copies of a component
subassembly -
correct answer ✅group of component that serves a single purpose
within the overall assembly;
composed of instances but can also be instances;
can contain other assemblies
associativity -
correct answer ✅if you change the geometry of the part, the
component and all instances of it will also change by the same
amount
assembly heirarchy -
correct answer ✅how systems/components/ subassemblies etc
are organized
,MAE 1351 Intro to Engineering Design
Exam 2 Questions & Answers (Grade
A+)
parent-child relationships -
correct answer ✅association between components and
subassemblies
base instance -
correct answer ✅one component is selected to remain stationary
while the other instances move into place around it;
also establishes reference planes for an assembly connected to the
base instance
assembly constraints -
correct answer ✅instances maintain dimensional and/or
geometrical relationships with respect to each instance with in the
assembly
concentric constraints example -
correct answer ✅ie cylindrical shafts fit within a cylindrical hole in
another part
,MAE 1351 Intro to Engineering Design
Exam 2 Questions & Answers (Grade
A+)
concentric constraints -
correct answer ✅constrain the centerline of one instance to
coincide with the centerline of another instance which makes the
two instances concentric
mating surfaces -
correct answer ✅two instances coincide with each other - stack on
top of eah other
surface normal -
correct answer ✅vector perpendicular to the surface and points
away from it;
mating surface constraint forces the normals of the two surfaces to
be parallel to each other
off-set -
correct answer ✅surface normals for two surfaces are parallel but
do not line up on top of each other
, MAE 1351 Intro to Engineering Design
Exam 2 Questions & Answers (Grade
A+)
coincident constraint -
correct answer ✅happen between two lines, two points, or a point
and a line
interference -
correct answer ✅amount that two instances overlap
clearance -
correct answer ✅the minimum distances between parts
interference vs clearance -
correct answer ✅optimizes assemblies; only one can be present at
a time
center of mass -
correct answer ✅stabilizes instances
moments-of-inertia and radii-of-gyration -
correct answer ✅calculated from the geometry, mass, and mass
distribution of the part; an object's moment of inertia about the
same axis
Exam 2 Questions & Answers (Grade
A+)
components -
correct answer ✅objects that make up a system; identical to its
reference geometry
instances -
correct answer ✅in assemblies modeling; copies of a component
subassembly -
correct answer ✅group of component that serves a single purpose
within the overall assembly;
composed of instances but can also be instances;
can contain other assemblies
associativity -
correct answer ✅if you change the geometry of the part, the
component and all instances of it will also change by the same
amount
assembly heirarchy -
correct answer ✅how systems/components/ subassemblies etc
are organized
,MAE 1351 Intro to Engineering Design
Exam 2 Questions & Answers (Grade
A+)
parent-child relationships -
correct answer ✅association between components and
subassemblies
base instance -
correct answer ✅one component is selected to remain stationary
while the other instances move into place around it;
also establishes reference planes for an assembly connected to the
base instance
assembly constraints -
correct answer ✅instances maintain dimensional and/or
geometrical relationships with respect to each instance with in the
assembly
concentric constraints example -
correct answer ✅ie cylindrical shafts fit within a cylindrical hole in
another part
,MAE 1351 Intro to Engineering Design
Exam 2 Questions & Answers (Grade
A+)
concentric constraints -
correct answer ✅constrain the centerline of one instance to
coincide with the centerline of another instance which makes the
two instances concentric
mating surfaces -
correct answer ✅two instances coincide with each other - stack on
top of eah other
surface normal -
correct answer ✅vector perpendicular to the surface and points
away from it;
mating surface constraint forces the normals of the two surfaces to
be parallel to each other
off-set -
correct answer ✅surface normals for two surfaces are parallel but
do not line up on top of each other
, MAE 1351 Intro to Engineering Design
Exam 2 Questions & Answers (Grade
A+)
coincident constraint -
correct answer ✅happen between two lines, two points, or a point
and a line
interference -
correct answer ✅amount that two instances overlap
clearance -
correct answer ✅the minimum distances between parts
interference vs clearance -
correct answer ✅optimizes assemblies; only one can be present at
a time
center of mass -
correct answer ✅stabilizes instances
moments-of-inertia and radii-of-gyration -
correct answer ✅calculated from the geometry, mass, and mass
distribution of the part; an object's moment of inertia about the
same axis
