FEH Midterm 1 EXAM 2024/2025 questions and answers | verified
Orthographic - 2D Drawing
Represents an object from multiple views that represent two dimensions
How many principle views are there and what are they? - 1. Right
2. Bottom
3. Front
4. Left
5. Rear
6. Top
How do you tell the views apart? - By their placement on the paper
First vs Third angle projection - How Orthographic projections are laid out
Differs around the world
We follow third angle projection
Line types and precedence - 1. Object lines (Solid)
2. Hidden Lines (Dashed)
3. Center lines and marks (broken line and target)
How are blind holes shown? - With hidden lines
Rules for going from isometric to orthographic - 1. Find and draw dimensions
2. Draw in edges
3. Refine and locate features (add hidden and center lines)
4. Add final lines
5. If an arch is > than 180 degrees, add center lines
, How many views are needed for an object with a line of symmetry? - Two
How many types of projections are there? - Three:
1. Oblique
2. Perspective
3. Axonometric (Isometric)
What kind of pictorial is an isometric drawing? - Axonometric
Isometric Projection - 3D Drawing
Made up of equal angles of 120 degrees and all plane equally shortened and tilted
Axis convention for isometric drawings - Details should be visible
Makes functional sense
The longest dimension should be width or depth
What should the longest dimension be in an isometric drawing? - The width or the depth
Should hidden edges be shown? - NO
Excluding blind holes
Circle appear as.. - Ellipses
Three types of surfaces - 1. Principal Surface
2. Inclined Surface
3. Oblique Surface
Orthographic - 2D Drawing
Represents an object from multiple views that represent two dimensions
How many principle views are there and what are they? - 1. Right
2. Bottom
3. Front
4. Left
5. Rear
6. Top
How do you tell the views apart? - By their placement on the paper
First vs Third angle projection - How Orthographic projections are laid out
Differs around the world
We follow third angle projection
Line types and precedence - 1. Object lines (Solid)
2. Hidden Lines (Dashed)
3. Center lines and marks (broken line and target)
How are blind holes shown? - With hidden lines
Rules for going from isometric to orthographic - 1. Find and draw dimensions
2. Draw in edges
3. Refine and locate features (add hidden and center lines)
4. Add final lines
5. If an arch is > than 180 degrees, add center lines
, How many views are needed for an object with a line of symmetry? - Two
How many types of projections are there? - Three:
1. Oblique
2. Perspective
3. Axonometric (Isometric)
What kind of pictorial is an isometric drawing? - Axonometric
Isometric Projection - 3D Drawing
Made up of equal angles of 120 degrees and all plane equally shortened and tilted
Axis convention for isometric drawings - Details should be visible
Makes functional sense
The longest dimension should be width or depth
What should the longest dimension be in an isometric drawing? - The width or the depth
Should hidden edges be shown? - NO
Excluding blind holes
Circle appear as.. - Ellipses
Three types of surfaces - 1. Principal Surface
2. Inclined Surface
3. Oblique Surface
