2008 Academic Challenge

ENGINEERING GRAPHICS TEST - SECTIONAL

- - This Test Consists of 50 Questions - -

Engineering Graphics Test Production Team

Ryan Brown, Illinois State University – Author/Team Leader Kevin Devine, Illinois State University – Author

Jacob Borgerson, University of Illinois at Urbana - Champaign – Reviewer Don Wayman, WYSE – Coordinator of Test Production

GENERAL DIRECTIONS Please read the following instructions carefully. This is a timed test; any instructions from the test supervisor should be followed promptly. The test supervisor will give instructions for filling in any necessary information on the answer sheet. Most Academic Challenge sites will ask you to indicate your answer to each question by marking an oval that corresponds to the correct answer for that question. Only one oval should be marked to answer each question. Multiple ovals will automatically be graded as an incorrect answer. Be sure ovals are marked as . Not as , , etc. , If you wish to change an answer, erase your first mark completely before marking your new choice. You are advised to use your time effectively and to work as rapidly as you can without losing accuracy. Do not waste your time on questions that seem too difficult for you. Go on to the other questions, and then come back to the difficult ones later if time remains.

*** TIME: 40 MINUTES ***

DO NOT OPEN TEST BOOKLET UNTIL YOU ARE TOLD TO DO SO!

© 2008 Worldwide Youth in Science and Engineering

“WYSE”, “Worldwide Youth in Science and Engineering” and the “WYSE Design” are service marks of and this work is Copyright © 2008 by the Board of Trustees of the University of Illinois at Urbana - Champaign.

All rights reserved.

WYSE – Academic Challenge Engineering Graphics Test (Sectional) – 2008

1. Most engineering drawings feature the dimensional numerals on the page in a unidirectional format. However, some drawings use the ___________ system, wherein values are read from the bottom or right.

A. bidirectional

B. linear

C. polar

D. aligned

E. contour

2. A location dimension for a hole should especially originate from a(n) _______ if one has been established.

A. base

B. key

C. datum

D. shoulder

E. axis

3. Identify this metalworking machine often used for a variety of processes, including cutting threads into a cylindrical bar of metal:

A. Drill press

B. Milling machine

C. Lathe

D. Welder

E. CMM

4. Sketch an isometric of the object shown, paying attention to vertex A. What is the minimum number of line segments needed to create the drawing?

A. 17

B. 19

C. 21

D. 23

E. 25

5. In the U.S.A., which symbol below is featured in the title block to establish the orthographic projection “angle”?

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6. According to ASME standards, what other line should be the same thickness as a cutting plane line?

A. Section line

B. Dimension line

C. Center line

D. Hidden line

E. Visible line

7. A dimension indicating the distance from B to C would be superfluous. What are the limits of size for the distance from B to C based on the other dimensions?

A. .607 to .636

B. .607 to .644

C. .615 to .636

D. .615 to .644

E. .617 to .626

8. Identify the type of pictorial drawing illustrated below:

A. Oblique

B. Isometric

C. One point perspective

D. Trimetric

E. Two point perspective

Engineering Graphics – 2 9. Examine the surface labels in both the

pictorial drawing and the development and select the INCORRECT number-letter pair.

A. 3 = H

B. 4 = D

C. 5 = F

D. 6 = E

E. 7 = J

10. A CAD drafter does not usually have to draw a border line and title block for a technical drawing because:

A. The border and title block are

contained within the default template file.

B. CAD drawings don’t need borders and title blocks.

C. CAD drawings are 3D models, which are turned and tilted, and therefore don’t fit on flat paper.

D. The paper the CAD drawing is printed on always has a pre-printed border and title block.

E. CAD drawings are not usually printed.

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11. Any view not projected onto one of the three principal planes of projection (frontal, horizontal, and profile), but is projected onto a plane perpendicular to one of those three planes, is a(n) ________ ________ view.

A. axonometric pictorial

B. angular perspective

C. oblique projection

D. primary auxiliary

E. secondary auxiliary

12. Given a regular front and right side view of a hub plate, and permission to change one view to a sectional view, what sectional technique is a good option for this object?

A. Pretend all the ribs are missing

B. Use a cutting plane through the rib at “5-o’clock” and align that rib with a vertical center plane as if it is at “6 o’clock”

C. Pretend the countersunk hole is not countersunk

D. Use a broken out section in the front view only

E. Use a conventional “S-Break” on the side view

13. A circle is to a cone as a square is to a:

A. Rectangle

B. Cylinder

C. Prism

D. Pyramid

E. Pentagon

Engineering Graphics – 3 14. These two parts have been designed

to have a cavity represented by the rectangle in the illustration. What fastener would you select to fill this cavity?

A. Taper pin

B. Bearing

C. Retaining Ring

D. O-Ring

E. Gib Head Key

15. The diameter of a quarter (25 cents) is measured with digital calipers and reads 22. Which of the following diameters would be the optimal outside diameter for a storage tube for quarters made of 1/16” plastic?

A. 3/4"

B. 24 mm

C. 1”

D. 46 mm

E. 50 mm

16. Given a threaded feature noted as #12-24UNC-2A, what number, if any, would replace the 24 if the “UNC” was changed to “UNF”?

A. 12

B. 16

C. 20

D. 24 (no change)

E. 28

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17. ____________ _______________ is

a field of study very important to, and integrated throughout, the field of engineering graphics.

A. Sheet vellum

B. Secondary velocity

C. Spatial visualization

D. Solid volumetrics

E. Symmetrical video

18. If the designer is designing a part to be

made of synthetic or semi-synthetic polymerization products, he/she should also have some knowledge about manufacturing processes in the area of:

A. Forgings

B. Ferrous alloys

C. Foundry

D. Plastics

E. Stainless steel

19. Given a top view and five possible full

section front views, which of the following is an example of the “web rule” for section lining of thin features such as webs and ribs?

Engineering Graphics – 4 20. Which of the following pairs of words

would logically be used to fill in the blanks for the definition of orthographic projection as defined by the Internet encyclopedia, Wikipedia™?

Orthographic projection is defined as a “means of representing a ____ _____ object in ______ ________.”

A. three-dimensional; two dimensions

B. solid model; surface drawings

C. rapid prototype; stereo lithography

D. hypothetical idea; real space

E. projection-based; folding planes

21. Which common 3D CAD modeling “tool” would be ideal for efficiently modeling this part, and therefore would be the final step in completing the model?

A. EXTRUDE

B. UNION

C. REVOLVE

D. SUBTRACT

E. SHELL

22. For the object illustrated by the half section view in the previous question, what percentage of the object is presumed to be cut away?

A. 25%

B. 45%

C. 50%

D. 60%

E. 75%

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23. Given this isometric drawing, and

assuming one-inch cubes or square planes in “normal” orientation, approximately how far apart are the two marbles?

A. 2”

B. 2.8”

C. 3”

D. 3.6”

E. 4”

24. Analyze the orthographic projection below. If all vertices were numbered in the front view, how many instances would there be wherein two, and only two, numbers are coincident on the view (like 12,11 in the top view)?

A. 2

B. 3

C. 4

D. 5

E. 6

Engineering Graphics – 5 25. The image below is representative of

an orthographic projection especially drawn for a ______________ ____________.

A. gear manufacturer

B. sales brochure

C. mold maker

D. mechanical engineer

E. patent application

26. Given parallel lines 1 and 2, and parallel lines 3 and 4 NOT perpendicular to 1 and 2, which of the following is FALSE?

A. A+B = C+D

B. E+G = F+H

C. A+B+C+D = 360°

D. A+D = E+H

E. B+F = H+D

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Engineering Graphics – 6

27. What is the result of the geometric

construction steps below? 29. Allowance (A) can be defined as the

tightest fit between two toleranced features such as a hole and a post. MMC is “maximum material condition” and LMC is “least material condition.” Written as a formula, which of the following is correct?

I. Begin with line segment XY.

II. Place a compass at X, and with radius more than (1/2)XY, draw a circle.

III. With the same radius, draw a circle with the compass at Y.

IV. Label the two intersection points of these circles as A and B, and connect with line AB.

Line AB is:

A. A = MMCHOLE – MMCPOST

B. A = MMCPOST – MMCHOLE

C. A = LMCHOLE – LMCPOST

D. A = LMCPOST – LMCHOLE

E. A = MMCHOLE – LMCPOST

A. Parallel to XY

B. Perpendicular to XY 30. A detail drawing of a 165mm x 200mm part is being placed on A-size paper. What scale would allow the part to be drawn as large as possible?

C. A bisector of XY

D. Both A and C

E. Both B and C

A. 1:3

B. 1:2 28. Which of the following dimensions

could NOT be removed from this drawing without causing the drawing to be incomplete?

C. 1:1

D. 2:1

E. 3:1

A. A

B. B

C. C

D. D

E. E

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