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Engineering Exploration Exam - Fall 2009 (ENGE 1024) - Part I - Prof. Jenny L. Lo, Exams of Engineering

Virginia Polytechnic Institute and State University (Virginia Tech)Engineering
Prof. Jenny L. Lo

The first part of an engineering exploration exam conducted at virginia tech in fall 2009 (enge 1024). It includes multiple-choice questions covering various topics such as accreditation of colleges of engineering, definitions, engineering design process, significant figures, and geometry. The document also provides formulas and defined conversion factors.

Typology: Exams

Pre 2010

Uploaded on 05/16/2010

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Form A, Page 1 of 14
Department of Engineering Education
Virginia Tech
ENGE 1024 – Engineering Exploration - Fall 2009
TEST 1 FORM A
NAME _________________________________ ID NUMBER __________________
SECTION CRN _________________________ INSTRUCTOR ________________
WORKSHOP LEADER _______________________
With my signature, I verify that I have neither given nor received unauthorized assistance on this test.
________________________________________________
DO NOT OPEN THIS TEST UNTIL INSTRUCTED TO DO SO.
1. This test is closed book and closed notes.
2. All cell phones, computers, and PDAs must be turned off and put away.
3. You may use a calculator.
4. Fill in identifying information on the opscan. Submitting incomplete or inaccurate opscan forms will be
subject to a 5 point test grade penalty. Be sure you have entered the following and darkened the
appropriate circles:
• NAME
• ID NUMBER=student ID number
• FORM= test form (A in this case)
• SEAT NO=last 3 digits of your CRN
5. Fill in the opscan answers as you work through the test, do not wait until the proctor calls time/pencils
down. Students will be required to stop working immediately, including opscan marking, when
time/pencils down is called. You have 75 minutes to complete the test.
6. Select only one answer choice for each question. Some questions have “None of the above” as an
answer choice. “None of the above” implies that all of the other answer choices are incorrect.
7. Check your test to make sure you have 1) 12 printed pages in the booklet and 2) 1 printed double-sided,
colored insert. If you are missing any page, notify a proctor.
8. There are 3 parts to this exam. These parts include: Part I (25 multiple choice questions in the booklet),
Part II (one workout problem on the first side of colored insert), Part III (one workout problem on the
second side of colored insert). You need to complete all three parts.
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Download Engineering Exploration Exam - Fall 2009 (ENGE 1024) - Part I - Prof. Jenny L. Lo and more Exams Engineering in PDF only on Docsity!

Department of Engineering Education

Virginia Tech

ENGE 1024 – Engineering Exploration - Fall 2009

TEST 1 FORM A

NAME _________________________________ ID NUMBER __________________

SECTION CRN _________________________ INSTRUCTOR ________________

WORKSHOP LEADER _______________________

With my signature, I verify that I have neither given nor received unauthorized assistance on this test. ________________________________________________

DO NOT OPEN THIS TEST UNTIL INSTRUCTED TO DO SO.

  1. This test is closed book and closed notes.
  2. All cell phones, computers, and PDAs must be turned off and put away.
  3. You may use a calculator.
  4. Fill in identifying information on the opscan. Submitting incomplete or inaccurate opscan forms will be subject to a 5 point test grade penalty. Be sure you have entered the following and darkened the appropriate circles: - NAME - ID NUMBER=student ID number - FORM= test form ( A in this case) - SEAT NO=last 3 digits of your CRN
  5. Fill in the opscan answers as you work through the test, do not wait until the proctor calls time/pencils down. Students will be required to stop working immediately, including opscan marking, when time/pencils down is called. You have 75 minutes to complete the test.
  6. Select only one answer choice for each question. Some questions have “None of the above” as an answer choice. “None of the above” implies that all of the other answer choices are incorrect.
  7. Check your test to make sure you have 1) 12 printed pages in the booklet and 2) 1 printed double-sided, colored insert. If you are missing any page, notify a proctor.
  8. There are 3 parts to this exam. These parts include: Part I (25 multiple choice questions in the booklet), Part II (one workout problem on the first side of colored insert), Part III (one workout problem on the second side of colored insert). You need to complete all three parts.

FORMULAS and DEFINED CONVERSION FACTORS

1 in = 2. 54000 cm

1 ft = 0. 304800 m

1 yard = 3 ft

1 mi = 5280 ft

1 min = 60 s

1 hr = 60 min

1 ft^3 = 7. 48 gal

1 gal = 3. 78 L

1 lbmol = 453. 6 mol

1 lb (^) f /in 2 = 6895 Pa

1 atm = 14. 7 lb (^) f /in^2

1 atm = 760 mm Hg

1 slug = 32. 174 lb (^) m

1 kg = 2. 20462 lb (^) m

1 N = 0. 22481 lb (^) f

Volume of a cone = (1/3)πR^2 H where R = radius of the base of the cone, H = height of the cone

  1. In third angle projection (the orthographic drawing convention used in class), what is the correct arrangement of views?
  1. In a flowchart, which of the following symbols should be used for the step “X = 5 + Y”?
  1. The correct flowchart symbol for a terminator is:
  1. A student desires to create a flowchart that allows a user to input two numbers, compare the two numbers, and display the larger of the two numbers. The flowchart must include the following (in addition to the start and stop blocks):
  1. One process block, two input/output blocks, two decision blocks, and one repetition block
  2. One process block, two input/output blocks, and one on-page connector
  3. Two to four input/output blocks, one decision block
  4. Three or four input/output blocks, one repetition block
  1. In sketching orthographic views of an object, the following line type will appear in each view:
  1. Visible line
  2. Ortho line
  3. Dimensioning line
  4. Hidden line
  5. Center line

Left Side View Top View

Front View

Top View

Front View

Right Side View

Top View Right Side View

Front View

Top View

Front View

Left Side View

  1. According to your textbook, engineers with the following specialization “utilize knowledge from both electrical engineering and computer science to design and implement computer systems in which the hardware and software components are both intimately connected with and critical to the success of the design.”
  1. Power Engineering
  2. Computer Science
  3. Polymer Engineering
  4. Systems Engineering
  5. Computer Engineering
  1. Mary is a newly hired civil engineer put in charge of designing a small dam to create a reservoir for the city water supply. She starts by asking local officials how much water the reservoir must contain and examines local regulations that are relevant to the construction of a dam. A nearby town has an existing reservoir that is similar to what she is trying to create so she starts with the basic design the neighboring town had used. She uses the information she has collected to adjust the existing design to the current circumstances. She builds a scale model to test the design. The initial design proves to be more fragile than expected. Based on the results from the scale model, she decides to make the foundation six feet deeper in the soil and the new scale model proves to be sturdier. Which step of the engineering design process discussed in class did John seem to skip over?
  1. Gather information
  2. Generate multiple solutions
  3. Test and implement a solution
  4. Problem statement
  1. The number of significant figures in the answer of a calculation:
  1. is a measure of the accuracy, that is, the closeness of a measured value to the true value for the quantity being measured
  2. indicates the number of digits that can be used with confidence
  3. is the number of decimal places in the answer
  4. None of the above
  1. The number of engineering majors offered at Virginia Tech is:
  1. less than 3
  2. 3 to 6
  3. 7 to 9
  4. greater than 9
  1. Sphere A’s radius is 25% of sphere B’s radius. Suppose the volume of sphere B is Z cubic units. The volume of sphere A will be:
  1. 64Z cubic units
  2. 0. 063Z cubic units
  3. 0. 016Z cubic units
  4. 0. 25Z cubic units
  5. 16Z cubic units
  6. None of the above
  1. Recall that in the straw design contest, the design that achieved the highest score on the following function was declared winner (h = height of the tower, c = number of paper clips and s = number of straws):

A straw tower design contest is held between team A and team B. The designs for both teams have been validated as acceptable designs. Team B has a design that is twice as high as team A but uses twice the number of paper clips and twice the number of straws compared to team A. Which of the following statements must be true?

  1. The winner is team A.
  2. The winner is team B.
  3. Both teams have the same scores.
  4. There is not enough information to determine which team has won the contest.
  1. Using the figure below, what is the length of the line connecting A and B of the regular octagon?
  1. 6. 04 cm
  2. 6. 53 cm
  3. 10. 0 cm
  4. 12. 1 cm
  5. 13. 1 cm
  6. 15. 0 cm

21. If log x(2.0x 2.0-16) = 2.0 , find x. Your answer should be reported with only 2 significant figures.

B

5. 00 cm

A

  1. A cube (side length = 1. 00 cm) has a cylindrical hole (diameter = 0. 250 cm) going from the center of one face to the opposite face. The ratio of surface areas with and without the hole (i.e., SAwith hole / SAwithout hole) is:
  1. 1. 11
  2. 0. 897
  3. 1. 21
  4. 0. 984
  5. 1. 687
  1. A pump is discharging water at a flow rate of 0. 025 m^3 /s into a cylindrical tank (diameter: 1. 6 m). If it takes 3. 0×10 1 seconds to fill the tank to 25% of its volume, what is the height of the tank?
  1. 0. 15 m
  2. 0. 34 m
  3. 0. 48 m
  4. 1. 5 m
  5. None of the above

End of Part I

Pages 13 and 14 (Parts II and III) are on the colored insert.

NAME_______________________________ ID NUMBER _________________

CRN_____________ WORKSHOP LEADER__________________________

INSTRUCTOR________________________

Part II. Workout problem (10 points) You do NOT have to apply the engineering format, but show all work clearly to receive appropriate partial credit.

Problem Statement: Sketch the two missing views of the following object in the spaces provided. Assume the hole is a through hole. The front view has been provided.

SOLUTION:

(turn page over for Part III)

NAME_______________________________ ID NUMBER _________________

CRN_____________ WORKSHOP LEADER__________________________

INSTRUCTOR________________________

Part III. Workout problem (15 points) You do NOT have to apply the engineering format, but show all work clearly (including appropriate diagrams) to receive appropriate partial credit.

Problem Statement: A conical hole is made in one face of a solid cube. The depth of the hole is equal to exactly half of the side length of the cube. The diameter of the base of the hole equals 75% of the side length of the cube. If the side length of the cube is 1. 10×10^2 mm, what percent of the original cube’s volume has been removed by forming the conical hole?

Solution:

(Turn page over for part II)