chapter 5 orthographic projection

Question 1

the three dimensions of an object are

Answer 1

width height depth

Question 2

the six standard views or six principal views

Answer 2

front top right side

left side rear bottom

Question 3

views that show width

Answer 3

front top bottom rear

Question 4

views that show height

Answer 4

front
left side
right side
rear

Question 5

views that show depth

Answer 5

top left side right side bottom

Question 6

orthographic means

Answer 6

at right angles

Question 7

three planes of projection

Answer 7

frontal
horizontal
profile

Question 8

frontal plane

Answer 8

front and rear

Question 9

horizontal plane

Answer 9

top and bottom

Question 10

profile plane

Answer 10

right and left

Question 11

when determining necessary views

Answer 11

choose the views that have the least amount of hidden lines and show essential contours and shapes clearly

Question 12

complicated drawings may require more than

Answer 12

three views

Question 13

when a surface is perpendicular to the plane of

projection,

Answer 13

it will project an edge view of the surface.

Question 14

when a surface is parallel to the plane of projection

Answer 14

the surface will project true size and true shape

Question 15

when a surface is inclined to the plane of projection

Answer 15

the surface will project foreshortened

Question 16

the three regular view are

Answer 16

top
front
right side

Question 17

third angle projection

Answer 17

USA

as if the observer is outside, looking in.

Question 18

First angle projection

Answer 18

Europe
right side is the the left of front view
top is below front

Question 19

when an edge is perpendicular to the plane of projection,

Answer 19

the edge will project as a point

Question 20

when an edge is parallel to the plane of projection

Answer 20

the true length of the edge will be projected

Question 21

when an edge is inclined to the plane of projection

Answer 21

the edge will appear foreshortened

Question 22

centerlines composed of

Answer 22

three dashes one long at each end and on short in the middle

Question 23

centerlines show

page 174

Answer 23

the axis of symmetry
indicate a path of motion
show location for circular patterns

Question 24

correct practice for hidden lines

page 175

Answer 24

leave a gap when a continuation of a visible line
hidden lines intersect at L and T corners
they jump a visible line
parallel hidden lines are staggered

Question 25

surfaces form the ______ of solid objects

Answer 25

BOUNDARIES

Question 26

a plane

Answer 26

flat surface

Question 27

Orthographic Projection

Answer 27

An orthographic projection is a representation of separate views of an object on a two-dimensional surface. It reveals the width, depth and height of the object

Question 28

methods to use when sketching a circle

Answer 28

enclosing square
centerline
paper

Question 29

when sketching a line the eye should be on the _____ toward which the pencil is moving

Answer 29

dot

Question 30

The most important consideration when sketching is _________ of the object.

Answer 30

Proportionality