CAD for Engineers
Mock Exam
Course Introduction
CAD for Engineers is an essential course that introduces students to the principles and applications of Computer-Aided Design (CAD) in the engineering field. The course covers the fundamentals of creating, editing, and analyzing 2D and 3D models using industry-standard CAD software. Students will learn how to interpret and generate technical drawings, model mechanical components, and assemble complex engineering systems. The curriculum also addresses topics such as drafting standards, dimensioning, tolerances, and the integration of CAD with other engineering tools. By the end of the course, students will have the practical skills necessary to effectively communicate design concepts and contribute to engineering projects using advanced digital design tools.
Recommended Textbook
Print Reading for Engineering and Manufacturing Technology 3rd Edition by
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Page 2
David A Madsen
Chapter 1: Introduction to Engineering and Manufacturing
Technology Print Reading
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Sample Questions
Q1) List the four classes of size tolerances identified by the International Organization for Standardization (ISO) standard ISO 2768, General Tolerances that generally controls unspecified tolerances for metric dimensions.
Answer: ISO 2768 tolerancing is based on the size of features. Small sizes have closer tolerances and larger sizes have larger tolerances. There are four classes of size tolerances including fine (f), medium (m), coarse (c), and very coarse (v).
Q2) Which of the following sheet sizes is 297x210mm?
A) A0
B) A1
C) A2
D) A3
E) A4
Answer: E
Q3) Describe and give another name for the Revision History block, and specify the preferred ASME location on the drawing.
Answer: The Revision History block, also called the revision block, is used to record changes to the drawing and is located in the upper right corner of sheet borderlines.
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Chapter 2: Communicating with a Sketch
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Sample Questions
Q1) Isometric sketches of an object represent the object exactly as it appears to the naked eye.
A)True
B)False
Answer: False
Q2) Some non-isometric lines can be true length lines.
A)True
B)False
Answer: False
Q3) One way to create an arc at a corner is to create a box equal in size to the radius of the arc.
A)True
B)False
Answer: True
Q4) A standard number 2 pencil works well for sketching with a slightly rounded point.
A)True
B)False
Answer: True
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Chapter 3: Scales and Precision Measurement
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Sample Questions
Q1) Describe and explain the basic function of the vernier caliper.
Answer: The vernier caliper consists of a stationary bar and a movable vernier slide assembly. The station rule is a hardened graduated bar with a fixed measuring jaw. The movable vernier slide assembly combines a movable jaw, a vernier plate, clamp screws, and an adjusting nut. The vernier slide assembly moves as a unit along the graduations of the bar to bring the jaws in contact with the work. Readings are taken in thousandths of an inch by reading the position of the vernier plate in relation to the graduations on the stationary bar.
Q2) Hectometer
A)cm
B)hm
C)dam
D)km
E)dm
F)mm
G)m
Answer: B
Q3) Give another name for the micrometer caliper.
Answer: A micrometer caliper is commonly called a micrometer.
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Page 5
Chapter 4: Reading Lines and Lettering on a Print
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Sample Questions
Q1) Thin lines capped on the ends with arrowheads.
A)chain line
B)object line
C)stitch line
D)hidden line
E)phantom line
F)section line
G)break line
H)leader line
I)cutting-plane line
J)construction line
K)dimension line
L)extension line
Q2) Military (MIL) standards recommend three line thicknesses: thick (cutting and viewing-plane, short break, and object), medium (hidden and phantom), and thin (center, dimension, extension, leader, long break, and section).
A)True
B)False
Q3) Visible lines are also called ____________________ lines.
Q4) Define font.
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Chapter 5: Reading Multiviews
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Sample Questions
Q1) When is a detail view used, how is the location of the detail view identified on the view from where the detail is taken, and how is the detail view located and titled on the drawing?
Q2) The front view should:
A) Represent the most natural position of use.
B) Provide the best shape description or most characteristic contours.
C) Have the longest dimension.
D) Have the fewest hidden features.
E) all of the above
Q3) When is a partial view used, and what type of line is generally associated with the portion of the view that is omitted?
Q4) When possible, a multiview shows the surface of the object in its true size and shape. A)True B)False
Q5) In a third-angle projection, the height is shown in only three views. A)True
B)False
Q6) Describe the reference arrow method for providing removed views.
Q7) A ____________________ is a slightly angled corner on an object.
Page 7
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Chapter 6: Reading Auxiliary Views
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Sample Questions
Q1) Name the method used when a viewing arrow with a view identification letter points to the location from where the view is taken. The auxiliary view is then placed in any desired location on the sheet and in the same orientation as the reference arrow. The view identification letter is placed above the auxiliary view.
A) orientation arrow method
B) location arrow method
C) position arrow method
D) reference arrow method
E) none of the above
Q2) The preferred practice is to align an auxiliary view with its principal view when possible, which generally makes it easier to read the print. However, there is an option to rotate an auxiliary view when the normal auxiliary view placement takes up too much space on the sheet. When this is done, a viewing-plane line is used to indicate from where the view is taken, and the auxiliary view is placed in any desired location on the sheet. The auxiliary view is rotated as needed and the angle and direction of rotation is specified under the view title.
A)True
B)False
Q3) Define secondary auxiliary view.
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Page 8
Chapter 7: Manufacturing Materials and Processes
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Sample Questions
Q1) Prototype construction or modeling is done after engineering drawings and documents.
A)True
B)False
Q2) In the dry sand molding, the sand is bonded together with ____.
A) specific moisture
B) clay
C) specially formulated resin
D) both b and c
E) all of the above
Q3) Select a typical plastic product manufacturing process.
A) injection molding
B) machining
C) thermoforming
D) both a and c
Q4) Name a process by which high-pressure hydraulic fluid is applied to ductile metals to form a specified shape
Q5) ASTM and SAE created a combined numbering system for metals and alloys.
A)True
B)False
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Chapter 8: Reading Dimensions
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Sample Questions
Q1) Describe how an angular dimension line is displayed on a print.
Q2) The draft associated with forging is never shown on the print.
A)True
B)False
Q3) An ISO 9000 certification is obtained by passing an inspection by the company management team.
A)True
B)False
Q4) Name the standard units of linear measurement on engineering documents and prints.
Q5) This is the tightest possible fit between two mating parts.
A) Maximum material condition
B) Interference
C) Allowance
D) none of the above
Q6) Draft angles for plastic parts are usually included in the regular part dimensions rather than shown specified separately.
A)True
B)False
Q7) Define single limits and describe how single limits are shown on a print.
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Chapter 9: Reading Prints With Fasteners and Springs
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Sample Questions
Q1) Keyseat depth dimensions are established in relationship to the shaft radius.
A)True
B)False
Q2) Schematic thread representations are represent the approximate appearance of threads by lines spaced equal to the diameter of the thread.
A)True
B)False
Q3) Machine screws always have chamfers.
A)True
B)False
Q4) Which of the following is not a basic representation method for springs?
A) detailed
B) simplified
C) schematic
D) all of the above
E) none of the above
Q5) Name the type of springs that are arched or bent flat-metal shapes designed so when placed in machinery they cause tension on adjacent parts. The tension can be used to level parts, provide a cushion, or position the relative movement of one part to another.
11
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Chapter 10: Reading Sections, Revolutions, and
Conventional Breaks
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Sample Questions
Q1) A portion of a part is broken away to clarify an interior feature; there is no associated cutting-plane line.
A) Removed section
B) Broken out section
C) Revolved section
D) Offset section
E) none of the above
Q2) An alternate technique for placing the cutting-plane lines is called the ________________. When using this method for identifying sections, arrowheads point toward each end of the cutting-plane line and the section identification letters are placed at the ends of the cutting plane line. The view title is placed above the removed section.
Q3) Multiple removed sections are generally arranged on the sheet in ________________ from left to right and top to bottom.
Q4) The letters _______________ are not used for sectional view identification.
Q5) A gasket is commonly sectioned even though it is a thin part.
A)True
B)False
Q6) What are section lines and what are they used for?
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Chapter 11: Reading Geometric Dimensioning and Tolerancing
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Sample Questions
Q1) ________________ is the distortion of a part after removal of forces applied during manufacture.
Q2) Which one of the following describes the left to right order of a feature control frame?
A) tolerance zone descriptor, geometric characteristic, geometric characteristic tolerance, primary datum reference
B) geometric characteristic tolerance, geometric characteristic, tolerance zone descriptor, datum reference
C) geometric characteristic symbol, tolerance zone descriptor, geometric characteristic tolerance, datum reference
D) geometric characteristic symbol, material condition symbol, geometric characteristic tolerance, tolerance zone descriptor, multiple datum reference E) none of the above
Q3) The symbol for profile tolerance of a surface is an arc the height of the lettering. A)True
B)False
Q4) What are the three characteristics of the orientation tolerance?
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Chapter
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Sample Questions
Q1) Spur gear teeth are straight and parallel to the gear shaft axis except for those found in the herringbone gear.
A)True
B)False
Q2) This is used when a change in direction is desired between the gear and pinion:
A) bevel gears
B) spur gears
C) herringbone gears
D) rack and pinion gears
E) none of the above
Q3) Circular pitch is the distance from a point on one tooth to the corresponding point on the adjacent tooth, measured on the pitch circle.
A)True
B)False
Q4) Define dwell related to cam terminology.
Q5) Spur gears and helical gears are designed with parallel shafts.
A)True
B)False
Q6) Describe the A, B, and C gear hubs.
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Chapter 13: Reading Precision Sheet Metal Prints
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Sample Questions
Q1) Bend transition refers to the change made between the adjacent surfaces at a bend when the edge of one surface extends beyond the edge of the other surface.
A)True
B)False
Q2) Seam material is added to both ends of a development if it is to have a double lap seam.
A)True B)False
Q3) Describe the practice of showing the part in its bent form and in flat pattern on a print.
Q4) Bend radius is typically added to a sheet metal part to relieve stress, or the tear that occurs when a portion of a piece of material is bent.
A)True
B)False
Q5) This is a feature added to a sheet metal part to reinforce or stiffen a part edge or to provide a surface for fastening or welding.
Q6) Describe the basic functions of ASME Y14.31-2008, Undimensioned Drawings.
Q7) List five common sheet metal seams.
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Chapter 14: Reading Prints of Working Drawings
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Sample Questions
Q1) A prototype is a model or original design that has not been released for production.
A)True
B)False
Q2) A print showing how all the parts of a product fit together is called an assembly.
A)True
B)False
Q3) A parts list and a list of materials are always interchangeable.
A)True
B)False
Q4) The balloon part identification number correlates to the same number identifying the part in the parts list.
A)True
B)False
Q5) What are standard parts?
Q6) Letters are common to show in revision balloons so they can be differentiated from balloon numbers on assembly prints.
A)True
B)False
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Chapter 15: Welding Processes and Reading Welding
Representations
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Sample Questions
Q1) Braze welding, brazing, and soldering are more of a bonding process than welding because the base material remains solid while a filler metal is melted into a joint.
A)True
B)False
Q2) Generally, the surface contour of a weld is raised above the surface face.
A)True
B)False
Q3) Gas tungsten arc welding is generally limited to thin materials, high integrity joints, or small parts.
A)True
B)False
Q4) _________________________ has lower equipment and operating costs than other types of welding.
Q5) The most traditionally used welding method is the shielded metal arc welding process.
A)True
B)False
Q6) ____________________ is a trademark of the Union Carbine Corporation.
17
Q7) What are three basic components of a welding symbol?
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Chapter 16: Reading Prints of Pictorial Drawings
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Sample Questions
Q1) ____ reflects the experience of objects appearing smaller the farther away they are.
A) Cavalier oblique drawing
B) Cabinet oblique drawing
C) General oblique drawing
D) Perspective drawing
E) none of the above
Q2) Centerlines are used in exploded views to represent lines of explosion.
A)True
B)False
Q3) The ASME standard for pictorial drawings is ASME Y14.4M, Pictorial Drawing.
A)True
B)False
Q4) Circles always appear as ellipses in perspective.
A)True
B)False
Q5) Pictorial assemblies are used to display a pictorial rather than multiview representation of the product.
A)True
B)False
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Chapter 17: Reading Electrical Diagrams and Schematics
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Sample Questions
Q1) The ____ consist of pads and conductor lines that are made of thin conductive material such as copper on a base sheet or board.
A) printed circuits
B) circuit board
C) master pattern
D) conductor
E) none of the above
Q2) Define active device.
Q3) Define electronics.
Q4) The ____________________ combines the simplicity of a schematic diagram and the completeness of a wiring diagram. The complete circuit is drawn as a series of lines and symbols that represent the electrical current path and the components of the circuit. Connection terminals are shown in their proper locations along the circuit.
Q5) Define fault condition.
Q6) The ____________________ is a simplified version of the schematic diagram. Simplified symbols exhibit a minimum of detail of the component and generally no connections at individual terminals.
Q7) DC refers to what?
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