midterm

Question 1

first angle

Answer 1

F then L

Question 2

third angle

Answer 2

F then R

Question 3

difference between isometric and trimetric

Answer 3

circles in an isometric will be the same amount foreshortened no matter what face they are on
in a trimetric they will be foreshortened different amounts

Question 4

incline faces in multi view drawing

Answer 4

will show in two views and will be a line in the third

Question 5

normal planes in a multi view drawing

Answer 5

will show on only one view and will be a line in the other two

Question 6

oblique faces in multi view drawing

Answer 6

will show in all three drawings

Question 7

general

Answer 7

basically anything that isn’t full scale or half scale but is full scale on the front

Question 8

cavaliere

Answer 8

full scale on both sides

Question 9

cabinet

Answer 9

full scale on front and half scale on the side

Question 10

determining isometric view

Answer 10

it is isometric if lines are parallel and you can make the front cornet into an x and y axis with two 30 degree lines coming up from the positive and negative x axises

Question 11

determining oblique view

Answer 11

oblique views show the true shape on the front. if the drawing has a true square or a true circle on the front that is not foreshortened then it is an oblique

Question 12

determining perspective view

Answer 12

parallel lines on a perspective view are converging.

Question 13

determining trimetric view

Answer 13

circles or squares on a trimetric view will NOT be foreshortened equally like in an isometric view

Question 14

are lines parallel on an object also parallel on an axonometric view?

Answer 14

yes

Question 15

how many views are necessary to show height depth and width

Answer 15

2

Question 16

in cabinet oblique drawings

Answer 16

two axes are perpendicular

not all faces are equally distorted

Question 17

is scale stated as a ratio of the number of actual units to the number of drawing units

Answer 17

no

Question 18

in isometric drawings what lines are drawn true length

Answer 18

the lines that follow the guide box

Question 19

what is bi directional acciotavitivaty

Answer 19

The changes made in a part file are reflected in the drawing and assembly files and the reverse is true.

Question 20

three negatives of wireframe models

Answer 20

No rendering capabilityAmbiguous

No volume information, which limits analysis capabilities.

Question 21

types of CAD

Answer 21

2 dimensional
wireframe
surface model
solid model

Question 22

2 dimensional examples

Answer 22

floor plan
site plan
detail drawing
cons: difficult to visualize, cant analyze or optimize

Question 23

wireframe examples

Answer 23

cons: only edges and contours are represented

no surface or volume information

Question 24

surface model examples

Answer 24

cons: doesn’t show interior information

good for wind experiments

Question 25

solid model examples

Answer 25

easy to visualize and manipulate
easily able to analyze and optimize
can easily feed to CAM in additive manufacturing process to 3D print

Question 26

what is the only type of projection that is not parallel

Answer 26

perspective