Name: ______

Student #:______

Graphical Communication for Engineering ENSC 204 – Final Exam

December 16, 2015

Time: 3 hours

CLOSED BOOK EXAM Read all the instructions below. Do NOT start the exam until you are told to.

VERSION 1111

You are allowed a pen, pencil, and an eraser. Other instruments are not allowed.

Layout each question as discussed in class. Use appropriate line types and weights for visible, hidden, and center lines where appropriate. Keep all questions neat. Place answers for the multiple choice questions on the Scantron sheet. All other question must be answered in this booklet.

In accordance with the Academic Honesty Policy (T10.02), academic dishonesty in any form will not be tolerated. Prohibited acts include, but are not limited to, the following: • making use of any books, papers, electronic devices or memoranda, other than those authorized by the examiners. • speaking or communicating with other students who are writing examinations. • copying from the work of other candidates or purposely exposing written papers to the view of other candidates. Please keep in mind that academic honesty requires not only that you avoid looking at anyone else’s work but that you protect your work from the eyes of others.

Out of Mark Multiple Choice 30

Isometric to Multi-view w/ Aux view 20 Missing View to Isometric 10 Cross-sections 10 Descriptive Geometry 10

Total 80

Multiple Choice (30 Marks)

For the following questions, enter the corresponding answers on the Scantron form. Answers placed within the examination sheets will not be marked. Ensure that you fill out the Scantron form properly: write the information in the squares provided and then fill out the corresponding bubbles. Fill out your name (last name then first name). Remember to use the space bubble (the first bubble) for the space between names. Include your student number in the identification number section. Enter the version number shown on the front of the exam (either 1111 or 2222) in the special code section. You may leave the section code blank. Each question is worth one (1) point. You must use a pencil for these questions.

1) The drawing below shows a cross-section of a blind hole in the front view. In the top view, to properly dimension the object, which of the possible answers represents the correct way to dimension the blind hole?

a) a is the correct way to dimension the blind hole. b) b is the correct way to dimension the blind hole. c) c is the correct way to dimension the blind hole. d) d is the correct way to dimension the blind hole. e) e is the correct way to dimension the blind hole.

2) The picture to the right shows the notation for a few drilling operations. Select the most correct statement: a) A is a counterbore; B is a countersink; and C is a spotface. b) A is a countersink; B is a countersink; and C is a spotface. c) A is a spotface; B is a countersink; and C is a counterbore. d) A is a counterbore; B is a countersink; and C is a counterbore. e) A is a countersink; B is a countersink; and C is a countersink.

3) The diagram to the right a) is missing one dimension, so it is under dimensioned. b) has one additional dimension, so it is over dimensioned. c) is missing two dimensions, so it is under dimensioned. d) has two additional dimensions, so it is over dimensioned. e) is properly dimensioned.

Use the diagram to the right when answering questions 4 and 5. 4) The diagram to the right a) is missing one dimension, so it is under dimensioned. b) has one additional dimension, so it is over dimensioned. c) is missing two dimensions, so it is under dimensioned. d) has two additional dimensions, so it is over dimensioned. e) is properly dimensioned.

5) For the diagram to the right to be dimensioned properly, a) One of the ∅’s should change to R and one of the arrows should point inward. b) One of the ∅’s should change to R and both of the arrows should point inward. c) One of the ∅’s should change to R and both of the arrows should point outwards. d) Both of the ∅’s should change to R and one of the arrows should point inward. e) No changes are necessary.

6) The dimensioning standard shown on the right is a) U.S. Standard. b) European Standard. c) Uni-directional standard. d) Aligned standard. e) None of the above statements are true.

7) For the dimensioned objects shown to the right, a) Only ‘a’ and ‘d’ are dimensioned properly. b) Only ‘b’ and ‘c’ are dimensioned properly. c) All but ‘c’ are dimensioned properly. d) All are dimensioned properly. e) None are dimensioned properly.

8) The figure below show an isometric drawing of an object with a corresponding cross-section taken at section B-B.

Which of the two given cross-sections is correct? a) The cross-section labelled A is correct. b) The cross-section labelled B is correct. c) Both cross-sections are correct. d) Neither of the cross-sections are correct.

9) You are standing half way up a 16-foot ladder which has sunk two feet into the ground looking at an object that is 6 feet in the air. If you drew a perspective drawing of what you see, you would produce a a) bird’s eye view. b) human’s eye view. c) ground’s eye view. d) worm’s eye view. e) cat’s eye view.

10) Consider the drawing to the right. The labels for 1, 2, and 3 should be a) z, y, x b) x, y, z c) y, x, z d) z, x, y e) x, z, y

11) Considering the same drawing as question 2, the labels for 4, 5, and 6 should be a) height, depth, width b) depth, width, height c) height, width, depth d) depth, height, width e) width, depth, height

12) The picture to the right shows how to create a(n) a) isometric projection. b) trimetric projection. c) axonometric projection. d) perspective projection. e) oblique projection.

13) The drawing of the street on the right is an example of a a) no point perspective. b) one-point perspective. c) two-point perspective. d) three-point perspective. e) Cabinet-oblique perspective.

14) Regarding the picture on the right, select the correct statement: a) U.S. Standard is placed in the first quadrant. b) U.S Standard is placed in the third quadrant. c) European standard is placed in the third quadrant. d) European standard is placed in the fourth quadrant. e) None of the above statements are true.

15) An oblique surface a) will have the same taxonomy in two views. b) will have the same taxonomy in three views. c) will have the same taxonomy in the front and profile views. d) will have the same taxonomy in the front and top views. e) None of the above.

16) Considering axonometric, isometric, trimetric, and dimetric drawings, rank these in the order of least possible number of views to most possible number of views. a) Isometric, trimetric, dimetric, axonometric. b) Isometric, dimetric, trimetric, axonometric. c) Axonometric, trimetric, dimetric, isometric. d) Trimetric, dimetric, isometric, axonometric. e) Axonometric, isometric, dimetric, trimetric.

17) When an observer is at infinity, the line of sight is normal to the picture plane, and the object is rotated so that features in all three dimensions are visible, a) an orthographic drawing will be produced. b) a perspective drawing will be produced. c) an oblique drawing will be produced. d) an orthmorphorpic drawing will be produced. e) an axonometric drawing will be produced.

18) When an observer is a finite distance away from the picture plane, a) an orthographic drawing will be produced. b) a perspective drawing will be produced. c) an axonometric drawing will be produced. d) an oblique drawing will be produced. e) None of the above.

19) A plan view is another name for the a) side view. b) front view. c) top view. d) auxiliary view. e) cross-sectional view.

20) Select the correct statement: a) If a line is positioned perpendicular to a projection plane and the line of site is perpendicular to that projection plane, the line will appear as a true length. b) If a line is positioned parallel to a projection plane and the line of site is parallel to that projection plane, the line will appear as a true length. c) If a line is positioned perpendicular to a projection plane and the line of site is parallel to that projection plane, the line will appear as a true length. d) If a line is positioned orthogonal to a projection plane and the line of site is parallel to that projection plane, the line will appear as a true length. e) If a line is positioned parallel to a projection plane and the line of site is perpendicular to that projection plane, the line will appear as a true length.

21) A half section is a) a multi-view drawing where only the top, front, and right profile views are shown. b) a dimensioning term used when referring to labeling an arc based on radius versus diameter. c) the intermediate step when creating a true shape and size drawing of an oblique plane where an edge view is produced. d) a type of drawing that simultaneously shows the cross-section of an object and the external view of the object. e) a term in circuit board layout where a PCB is divided into two based on inputs and outputs.

In each of the following, an object is placed at the center of a “glass box”. Your eye is at the corner of the glass box indicated by the black dot, and you are looking toward the center of the glass box. Select which drawing from the choice of 5 best represents the object as viewed from this position.

22) The correct answer is 23) The correct answer is 24) The correct answer is a) 1 a) 1 a) 1 b) 2 b) 2 b) 2 c) 3 c) 3 c) 3 d) 4 d) 4 d) 4 e) 5 e) 5 e) 5

Refer to this diagram when answering questions 25 through 30.

25) In the diagram, the box numbered as “1)” should be 28) In the diagram, the box numbered as “4)” should be labeled labeled a) orthographic projections a) orthographic projections b) multi-view projections b) multi-view projections c) oblique projections c) oblique projections d) axonometric projections d) axonometric projections e) normal projections e) normal projections

26) In the diagram, the box numbered as “2)” should be 29) In the diagram, the box labeled “10)” is called a second labeled angle projection, which is also called the European Standard. a) orthographic projections a) True b) multi-view projections b) False c) oblique projections d) axonometric projections e) normal projections 30) In the diagram, the box labeled “5)” is a one-point 27) In the diagram, the box numbered as “3)” should be perspective that is in labeled a) bird’s eye view a) orthographic projections b) ground’s eye view b) multi-view projections c) worm’s eye view c) oblique projections d) orthographic view d) axonometric projections e) normal view e) normal projections

Isometric to Multi-view with Auxiliary View (20 marks)

For the isometric drawing below, draw the corresponding multi-view drawing (top, front, and right profile) on the grid provided. Also draw a partial auxiliary view for the “I” shaped face. Assume that any feature where you cannot determine the end point passes completely through the object.

Sketch your answer here.

Missing Multi-view to Isometric (10 marks)

For the multi-view drawing given below, sketch the isometric drawing on the grid provided and draw in the missing top view.

Sketch your isometric drawing here.

Cross-section (10 marks)

For the multi-view drawing given below, create a cross-section as indicated by the cutting plane and draw an isometric drawing.

Cross-section Isometric

. Descriptive Geometry (10 marks) A plane is defined by three points, A, B, and C, with the following coordinates (1,4,5), (3,1,1), and (6,6,3), respectively. On the coordinates provided below, plot the points on the top and front views. Then, using the descriptive geometry techniques discussed in class, draw the plane in true shape and size using H-1 as your first fold line. Marks are allocated for properly labeling fold lines and vertices as well as showing your projection lines. (10 marks)