IET 226 MIDTERM LEE EXAM QUESTIONS AND ANSWERS
Difference between raster graphics and vector graphics? - CORRECT ANSWER✅✅✅Raster:
Resolution oriented, pixelated, larger files
Vector: mathematical formula, not resolution dependent, small files
Benefits of employing CAD in Mechanical Design Perspective - CORRECT ANSWER✅✅✅Assists
creation, improves quality and communication, provides database for CAM and CAE
Three major tasks of 3D CAD Design - CORRECT ANSWER✅✅✅Part modeling, assembly modeling,
drafting
What is CAM and what is major purpose of CAM? - CORRECT ANSWER✅✅✅Computer Aided
Manufacturing, connection between machining and CAD
What s FEA/FEM? What types of solution does it provide? - CORRECT ANSWER✅✅✅Finite Element
Analysis/Method
Structural and thermal analysis
What is CFD? List examples of problems solved by CFD? - CORRECT ANSWER✅✅✅Computation
Fluid Dynamics
Fluid and thermal flow analysis
What are the three major interests of Motion Analysis (Kinematics)? - CORRECT ANSWER✅✅✅Path
Speed (velocity), acceleration
Milestone of CAD system for PC? - CORRECT ANSWER✅✅✅Creation of AutoCAD
What does CATIA stand for? - CORRECT ANSWER✅✅✅Computer Aided Three-Dimensional
Interactive Application
, What is the Kennel of CATIA? - CORRECT ANSWER✅✅✅Convergence Geometric Modeler (Dassault
System)
Examples of CAD system utilizing Parasolid Kennel - CORRECT ANSWER✅✅✅NX, Solidworks, Solid
Edge, MasterCAM
Two major solid modeling methodologies in modern 3D CAD system - CORRECT
ANSWER✅✅✅Primitives and sweep
Type of Primitives - CORRECT ANSWER✅✅✅Cone, cylinder, wedge, sphere, torus, box, pyramid
Type of Sweep - CORRECT ANSWER✅✅✅sweep, extrusion, revolve, loft
What is Boolean Operation? - CORRECT ANSWER✅✅✅Subtraction, adding (unite), intersection
What is CSG? - CORRECT ANSWER✅✅✅Constructve Solid Geometry
What is B-Rep (Boundary Representation)? How does it work? - CORRECT ANSWER✅✅✅Store
boundries locatios an relations
How is "Parametric Modeling" defined in CAD system? - CORRECT ANSWER✅✅✅Use of certain
parameters or variables that can be modified to change the output of equation (or system)
Why "Parametric Modeling" is important in CAD system? - CORRECT ANSWER✅✅✅Essential
constraint can be altered by manipulating parameters to determine/modify the shape of the model
What is the benefit of employing the methodology? - CORRECT ANSWER✅✅✅Enables greater level
of precisions and prevents errors in design process and manufacturing
What is the benefits of Feature-based Modeling? - CORRECT ANSWER✅✅✅Overcome dumb solids,
easy to modify, dimensions are parametric, model history available, assembly environments
Difference between raster graphics and vector graphics? - CORRECT ANSWER✅✅✅Raster:
Resolution oriented, pixelated, larger files
Vector: mathematical formula, not resolution dependent, small files
Benefits of employing CAD in Mechanical Design Perspective - CORRECT ANSWER✅✅✅Assists
creation, improves quality and communication, provides database for CAM and CAE
Three major tasks of 3D CAD Design - CORRECT ANSWER✅✅✅Part modeling, assembly modeling,
drafting
What is CAM and what is major purpose of CAM? - CORRECT ANSWER✅✅✅Computer Aided
Manufacturing, connection between machining and CAD
What s FEA/FEM? What types of solution does it provide? - CORRECT ANSWER✅✅✅Finite Element
Analysis/Method
Structural and thermal analysis
What is CFD? List examples of problems solved by CFD? - CORRECT ANSWER✅✅✅Computation
Fluid Dynamics
Fluid and thermal flow analysis
What are the three major interests of Motion Analysis (Kinematics)? - CORRECT ANSWER✅✅✅Path
Speed (velocity), acceleration
Milestone of CAD system for PC? - CORRECT ANSWER✅✅✅Creation of AutoCAD
What does CATIA stand for? - CORRECT ANSWER✅✅✅Computer Aided Three-Dimensional
Interactive Application
, What is the Kennel of CATIA? - CORRECT ANSWER✅✅✅Convergence Geometric Modeler (Dassault
System)
Examples of CAD system utilizing Parasolid Kennel - CORRECT ANSWER✅✅✅NX, Solidworks, Solid
Edge, MasterCAM
Two major solid modeling methodologies in modern 3D CAD system - CORRECT
ANSWER✅✅✅Primitives and sweep
Type of Primitives - CORRECT ANSWER✅✅✅Cone, cylinder, wedge, sphere, torus, box, pyramid
Type of Sweep - CORRECT ANSWER✅✅✅sweep, extrusion, revolve, loft
What is Boolean Operation? - CORRECT ANSWER✅✅✅Subtraction, adding (unite), intersection
What is CSG? - CORRECT ANSWER✅✅✅Constructve Solid Geometry
What is B-Rep (Boundary Representation)? How does it work? - CORRECT ANSWER✅✅✅Store
boundries locatios an relations
How is "Parametric Modeling" defined in CAD system? - CORRECT ANSWER✅✅✅Use of certain
parameters or variables that can be modified to change the output of equation (or system)
Why "Parametric Modeling" is important in CAD system? - CORRECT ANSWER✅✅✅Essential
constraint can be altered by manipulating parameters to determine/modify the shape of the model
What is the benefit of employing the methodology? - CORRECT ANSWER✅✅✅Enables greater level
of precisions and prevents errors in design process and manufacturing
What is the benefits of Feature-based Modeling? - CORRECT ANSWER✅✅✅Overcome dumb solids,
easy to modify, dimensions are parametric, model history available, assembly environments
