Deck 21: Reading Technical Drawings

Question 1

Numbers in the ____ line or next to it give the size or length of an object.

A) section
B) cutting plane
C) extension
D) dimension

Answer 1

D

Question 2

There are two types of ____ lines- long and short.Both show that part of an object has been removed.

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

Answer 2

C

Question 3

____ show the center point of circles, arcs, round, or symmetrical objects.They also locate the center point for holes, irregular curves, and bolts.

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

Answer 3

D

Question 4

____ 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 5

____ 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 6

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 7

____ 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 8

____ lines are the lines extending from an object that locate the points being dimensioned.

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

Question 9

The ____ let(s) you know where the parts are to be sent once you have completed your part of the assembly process.

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

Question 10

____ 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 11

The ____ view is used to show detail within a part that would be obscured by the part's surface.Often a freehand break line is used to outline the area that has been imaginarily removed to reveal the inner workings.

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

Question 12

____ show an alternate position of a moving part or the extent of motion such as the on/off position of a light switch.They can also be used as a place holder for a part that will be added later.

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

Question 13

____ 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 14

The ____ view is drawn as if part of the object were sawn away to reveal internal details.This view is useful when the internal details would not be as clear if they were shown as hidden lines.

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

Question 15

____ lines represent an imaginary cut through the object.They are used to expose the details of internal parts that would not be shown clearly with hidden lines.

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

Question 16

The ____ view is usually an external view of a specific area of a part.These views show small details of a part's area and negate the need to draw an enlargement of the entire part.

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

Question 17

Different types of materials, such as steel and cast iron, can be identified by using different patterns of ____ lines.

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

Question 18

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 19

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

Question 20

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 21

The various line types are collectively known as the ____________________.

Question 22

​What is the most important thing about a sketch?

A) ​That the drawing be clear.
B) ​That the lines be drawn straight.
C) ​That the corners meet at right angles and the circles are uniform.
D) ​That the scale is accurate and the lines are drawn with a straight edge when possible.

Question 23

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 24

When might it be necessary to write on a shop drawing?​

A) ​To note changes for as built fabrication.
B) ​To keep your place in the fabrication.
C) ​So the night shift can see what you did.
D) ​It is never ok to write on a shop drawing.

Question 25

The width 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

Question 26

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

Question 27

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

Question 28

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

A) ​They are too small to do a good job erasing lines.
B) ​They have an abrasive action that can rough up the top of the paper.
C) ​They have a sharp metal ring that can cut or tear the paper.
D) ​All of the above

Question 29

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 30

​Why is it important to have a drawing be accurate?

A) ​So that when a dimension is missing you can measure the drawing with a rule to get the missing dimension.
B) ​So you can see missing parts easier.
C) ​Engineers that have to approve the project when it is built can measure the part and measure the drawing to see that you built the part correctly.
D) ​So that parts will fit together properly.

Question 31

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.

Question 32

​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 33

​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 a detailed drawing showing an important part.

Question 34

​Not all drawings just have the three standard views, so a welder needs to know how all of the six views relate to each other.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 35

​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 36

​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 37

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 38

​Of the two methods for locating the views, the ____ angle projection method is the most commonly used for welding drawings.

A) ​first
B) ​second
C) ​third
D) ​fourth

Question 39

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

Question 40

​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 41

Discuss orthographic projections and pictorial drawings.

Question 42

Elaborate on the two types of pictorial drawings.

Question 43

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

Question 44

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

Question 45

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

Question 46

Discuss the similarities and differences between sketches and mechanical drawings.

Question 47

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 48

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

Question 49

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