Deck 21: Reading Technical Drawings

Question 1

How long would a line actually be drawn if an architectural scale of ¼ in. equals 1 in. is used to scale a 4 in. long line?

A) 4 in.
B) ½ in.
C) 1 in.
D) 8 in.

Answer 1

C

Question 2

The ____, which will appear in one corner of the drawing, may contain the name of the part, company name, scale of the drawing, date of the drawing, who made the drawing, drawing number, number of drawings in this set, and tolerances.

A) specifications
B) title box
C) project routing information
D) bill of materials

Answer 2

B

Question 3

The w idth dimensions of an object can be found on the ____ views.

A) top and right-side
B) front and top
C) front and right-side
D) front and left-side

Answer 3

A

Question 4

____ lines show the surface that has been imaginarily cut away with a cutting plane line to show internal details.

A) Section
B) Break
C) Extension
D) Phantom

Question 5

On a mechanical drawing, which of the following views would be related correctly to each other?

A) The right- and left-side views are on opposite ends of the view.
B) The bottom view is drawn below the right-side view.
C) The back view is to the side of the right-side view.
D) Both side views can be drawn next to each other.

Question 6

The height dimensions of an object can be found on the ____ views.

A) top and right-side
B) top and left-side
C) front and top
D) front and right-side

Question 7

There are two types of ____ lines; both show that part of an object has been removed.

A) extension
B) section
C) break
D) phantom

Question 8

____ lines represent an imaginary cut through the object.

A) Section
B) Cutting plane
C) Break
D) Phantom

Question 9

A ____ view can be used to show a surface of the part that would not normally be drawn square to any of the six normal view planes.

A) section
B) cut-a-way
C) rotated
D) detail

Question 10

The ____ view is usually an external view of a specific area of a part.

A) rotated
B) detail
C) cut-a-way
D) section

Question 11

The ____ is (are) a list of the various items that will be needed to build the weldment.

A) specifications
B) bill of materials
C) title box
D) project routing information

Question 12

The ____ detail(s) the type and grade of material to be used, including base metal, consumables such as filler metal, and hardware such as nuts and bolts.

A) project routing information
B) bill of materials
C) title box
D) specifications

Question 13

____ lines show the edge of an object, the intersection of surfaces that form corners or edges, and the extent of a curved surface, such as the sides of a cylinder.

A) Object
B) Hidden
C) Dimension
D) Extension

Question 14

____ lines are drawn so that their ends touch the object being measured, or they may touch the extension line extending from the object being measured.

A) Extension
B) Dimension
C) Section
D) Cutting plane

Question 15

The length dimensions of an object can be found on the ____ views.

A) front and left-side
B) front and right-side
C) top and right-side
D) front and top

Question 16

____ lines show the same features as object lines except that the corners, edges, and curved surfaces cannot be seen because they are hidden behind the surface of the object.

A) Extension
B) Hidden
C) Dimension
D) Center

Question 17

____ show the center point of circles, arcs, round, or symmetrical objects.

A) Dimension lines
B) Object lines
C) Extension lines
D) Centerlines

Question 18

The ____ view is drawn as if part of the object were sawn away to reveal internal details.

A) detail
B) rotated
C) section
D) cut-a-way

Question 19

____ point to a part to identify it, show the location, and/or are the basis of a welding symbol.

A) Break lines
B) Extension lines
C) Leaders and arrows
D) Phantom lines

Question 20

Why might a set of drawings contain a drawing that is drawn to a larger scale than the other drawings?

A) It is made bigger to fill up the space on the drawing sheet.
B) All the parts are always drawn to the same scale so it is easier for the welder to follow.
C) Sometimes the right-side view has to be drawn bigger, because it is harder to see than the other views.
D) It would be used for a detailed drawing showing an important part.

Question 21

Although there are different patterns of section lines for different materials, most often the evenly spaced ____________________ lines for cast iron are used for all cut surfaces.

Question 22

Making a sketch on ____________________ paper is a way of both making your drawing more accurate and speeding up the sketching process. This type of paper is available with grid sizes ranging from 1/8 in. to 1/4 in. squares.

Question 23

There are two commonly used scales, but the ____________________ scale is the one that is most often used for mechanical welding drawings.

Question 24

When we use a(n) ____________________, we are saying that the part being drawn is drawn smaller or larger than it really is.

Question 25

A group of drawings, known as a(n) ____________________, should contain enough information to enable a welder to produce the weldment.

Question 26

Elaborate on the two types of pictorial drawings.

Question 27

The various line types are collectively known as the ____________________.

Question 28

How are architectural and engineering scales divided? Provide examples of common units.

Question 29

____________________ are thin metal tools that are used in drafting to protect the neighboring line from erasure.

Question 30

Discuss orthographic projections and pictorial drawings.

Question 31

How should you start to draw curves and irregular shapes?

A) By using a straight edge to lay out the length, width, and height of the part
B) By looking at the curve and sketching it on a clean sheet of paper
C) By making a series of points on a graph that coincide with the points on the curve you are copying
D) Place the part on a flat surface and start measuring each turn to get the center point so that you can use a compass to draw the correct lines.

Question 32

Raster drawings are commonly known as ____________________ drawings because the computer maps the location of every little bit (pixel) of the drawing.

Question 33

How can the inch lines on graph paper be easily identified?

A) You can use a ruler to easily mark them.
B) The inch symbol (") is marked on the line.
C) They are lighter than the other lines.
D) They are darker than the other lines.

Question 34

How do computers see a raster line?

A) As a series of little pixels
B) As black or white parts of a line
C) As a clear sharp line
D) It depends on the type of computer used.

Question 35

Drafting programs use ____________________ lines, which is different from most drawing programs, which use raster art.

Question 36

Computers see vector lines as lines, and they see raster lines as if they were part of a ____________________.

Question 37

What is the possible problem with erasing a pencil mark with most pencil erasers?

A) They are too large to do a good job erasing lines.
B) They have an abrasive action that can rough up the top of the paper.
C) The eraser shield limits its usefulness.
D) All of the above

Question 38

Why do drafting programs use vector lines?

A) The programs are less expensive than the raster line programs.
B) They let you use more colors to make line identification easier than raster programs.
C) Because it is possible to draw the part more accurately than it can be built.
D) The bitmap-drawing tools allow the drawing to be made faster than raster type programs.

Question 39

What should be done if a dimension cannot be found on a drawing?

Question 40

Discuss the similarities and differences between sketches and mechanical drawings.