Basic Drafting

Front 1

concentric circles

Back 1

circles, usually of different sizes, that share the same center point.

Front 2

isometric lines

Back 2

lines on an isometric drawing that are parallel to the isometric axes.

Front 3

isometric sketch

Back 3

a sketch that shows height, width, and depth of an object by using three axes set at 120 degree angles to one another.

Front 4

nonisometric lines

Back 4

lines on an isometric drawing that do not run parallel to the isometric axes.

Front 5

oblique sketch

Back 5

a sketch in which the height and width are shown in their true size (with axes at 90 degrees to each other), but in which the depth can be drawn at any angle.

Front 6

overlay

Back 6

a piece of tracing paper placed on top of a sketch or drawing so that you can see the drawing through it. overlays allow you to trace the desired parts of the drawing underneath quickly.

Front 7

proportion

Back 7

size relative to the size of other objects in the same drawing.

Front 8

tangent arcs

Back 8

parts of two circles that touch.

Front 9

alphabet of lines

Back 9

the various lines and line symbols that have specific meanings when used on technical drawings.

Front 10

When erasing a pencil line drawn on film, move the eraser

Back 10

across the line.

Front 11

A _______ compass is used to draw arcs or circles with large radii.

Back 11

beam

Front 12

While angles are commonly given in degrees, minutes, and seconds, the use of _______ is now becoming more popular.

Back 12

decimal degrees

Front 13

the 45 degree and the 30-60 degree triangles can be combined to form angles in increments of

Back 13

15 degrees.

Front 14

An angle of 25 degree 30'36" is the same as

Back 14

25.56.

Front 15

Technical drawings done electronically are prepared on a

Back 15

CAD system.

Front 16

The compass best suited for drawing very small circles is the _____ compass.

Back 16

drop-spring bow

Front 17

The different lines, or line symbols, used on technical drawings are called

Back 17

the alphabet of lines.

Front 18

A straight or curved line identical on both sides of a point or axis is

Back 18

symmetrical

Front 19

The compass is never used to transfer distances.

Back 19

false

Front 20

CAD systems are rapidly replacing manual drafting equipment.

Back 20

true

Front 21

Drafters generally use adhesive tape to fasten the drawing sheet to the board.

Back 21

false

Front 22

An erasing template is used to avoid erasing nearby lines accidentally.

Back 22

true

Front 23

Dividers can be used to transfer distances on a drawing.

Back 23

true

Front 24

Line weight refers only to the thickness of lines.

Back 24

false

Front 25

The slant on the outside of the compass lead is also called a bevel.

Back 25

true

Front 26

Safety is seldom a concern in the drafting room.

Back 26

true

Front 27

Short-break lines are thin.

Back 27

false

Front 28

CAD drawings are almost always created at full size.

Back 28

true

Front 29

One of the most convenient ways to set up an AutoCAD drawing to conform to ANSI or ISO standards is to use one of AutoCAD's drawing templates.

Back 29

true

Front 30

AutoCAD operators do most of their drawing in paper space.

Back 30

false

Front 31

Layers in AutoCAD have a continuous linetype by default.

Back 31

true

Front 32

The nonprinting pattern of dots in an AutoCAD drawing that provides a visual reference for the CAD operator is set using the GRID command.

Back 32

true

Front 33

While angles are commonly given in degrees, minutes, and seconds, the use of ______ is now growing in popularity.

Back 33

Decimal Degrees

Front 34

The instrument used in manual drafting to divide lines and transfer distances is the ________.

Back 34

dividers

Front 35

Another name for mechanical pencil is _______.

Back 35

A lead-holder

Front 36

The process of creating technical drawings using technical pens is the _______.

Back 36

inking method

Front 37

Curved lines that are not true circles or arcs are drawn with an _____.

Back 37

irregular curve

Front 38

The physical (size) boundaries of a CAD drawing are known as its _______.

Back 38

limits

Front 39

In AutoCAD, a(n)________ is similar to an overlay on a board-drafted document.

Back 39

layer

Front 40

In AutoCAD, the_______ command is used to create straight lines.

Back 40

line

Front 41

The ________ mode in AutoCAD forces every line you create to be either vertical or horizontal.

Back 41

orthographic

Front 42

A CAD line that consists of segments that can be either curved or straight is a(n) ______.

Back 42

Poly line

Front 43

What type of paper is used for the overlay method?

Back 43

Tracing paper

Front 44

What is the term used in estimating proportions?

Back 44

eyeball

Front 45

What is another name for multiview drawing?

Back 45

orthorgraphic projection

Front 46

Name three basic types of pictorial sketching.

Back 46

perspective, orthographic, isometric.

Front 47

What are the three principle planes of projection and what view appears on each plane?

Back 47

x plane, y plane, z plane
top, front, side.

Front 48

What two shapes can be used for a pencil point?

Back 48

bevel, cone.

Front 49

How many thicknesses of lines are generally used in drafting?

Back 49

.3, .5, .7

Front 50

What is the name of the instrument used to measure or lay out angles?

Back 50

protractor

Front 51

Which command in AutoCAD is used to customize text size and font style?

Back 51

text

Front 52

List the five major hardware components of a CAD system.

Back 52

computor, moniter, keyboard, mouse, printer.

Front 53

Always draw curves to the points of ________ first.

Back 53

tangency