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MAE 1351 FINAL PRACTICE PAPER 2026
COMPLETE SOLUTIONS
โ From the textbook 15.07... Engineering drawings require the use of single-stroke gothic lettering. What fonts? Answer: Century Gothic and Romans.snx โ From the textbook 15.07... T/F: Letters in an engineering drawing must all be uppercase. Answer: True. โ From the textbook 15.08... When dimensioning the diameter/radius of this part, it should be placed in it's the rectangular view. Answer: Positive space cylindrical parts (helps to differentiate from holes). โ From the textbook 15.08... This feature is dimensioned by giving a length from the end of the part and an angle or by specifying two distances. Answer: Chamfer โ From the textbook 15.08... Describe the counterbore symbol. Answer:
โ From the textbook 15.08... Describe the countersink symbol. Answer: โ From the textbook 15.08... T/F: When adding symbols to an engineering drawing, the order doesn't matter as the manufacturer will read the symbols and decide on what order to perform the operations. Answer: False, while the manufacturer will choose, symbols should be strung together in the order that a machinist would perform the operations. โ From the textbook 15.08... T/F: When multiple instances of a feature, like a hole, are present, each instance must be individually dimensioned. Answer: False, only dimension one, and use the X symbol to indicate how many times that particular feature is machined. โ From the textbook 15.08... The feature, since it is generally produced with tools such as milling bits, should be dimensioned by their diameters. Answer: Slots. โ From the textbook 15.09...
โ From the textbook 15.12... T/F: Wires, cables, sheets, rods and other materials manufactured to gage or code numbers do not need to be specified or dimensioned. Answer: False, they shall be specified by linear dimensions indicating the diameter or thickness. โ From the textbook 15.12... T/F: A 90 degree angle is applied where center lines and lines depicting features are shown on a drawing at right angles and no angle is specified. Answer: True. โ From the textbook 15.12... T/F: Unless otherwise specified, all dimensions are applicable at 20 degrees C or 68 degrees F. Answer: True. โ From the textbook 15.12... T/F: All dimensions and tolerances apply in a free state condition. This does not apply to non-rigid parts. Answer: True. โ From the textbook 15.12... T/F: Unless otherwise specified, all geometric tolerances apply for full depth, length and width of the feature. Answer: True. โ From the textbook 15.12...
T/F: A dimension specified fora given feature on one level of drawing is required for that feature at all other levels (Assembly Drawing) Answer: False, it is not mandatory to dimension a feature beyond the drawing level where it is specified. โ From the textbook 16.02... What kind of tolerance?
- All of the deviation is in one direction from the basic size (all above/all below).
- For metric, a single zero is shown without a plus or minus sign.
- For imperial, the tolerance value is expressed with the same decimals as the basic size and the according plus/minus sign is added. Answer: Unilateral Tolerance โ From the textbook 16.02... Tolerances where the deviation is divided in some way above and below the basic size of the dimension. Answer: Bilateral Tolerance โ From the textbook 16.02... Dimensions that are displayed with the high limit above the lower limit. Answer: Limit Dimensions โ From the textbook 16.03...
โ From the textbook 16.03... Statistical tolerancing is applied only when these methods are being used for manufacturing. With this, technicians and engineers are better informed about processes for which tolerance values can be increased to reduce manufacturing costs. Answer: Statistical Process Control Methods โ From the textbook 16.04... What kind of fit? Specifying the limits of size in such a way that a clearance or space always exists between mating parts. Answer: Clearance Fit โ From the textbook 16.04... What kind of fit? Specifying the limits of size in such a way that an interference of material always exists between mating parts. Answer: Interference Fit โ From the textbook 16.04... What kind of fit? Specifying the limits of size in such a way that either a clearance or interference fit will exist when mating parts are assembled. Answer: Transition Fit โ From the textbook 16.04...
This fit is typically associated with selective assembly which involves measuring parts after they are machined and matching them up with appropriate matching parts. Answer: Transition Fit โ From the textbook 16.04... Define Allowance. Answer: The difference between the maximum material limits of mating parts. It is the minimum clearance or maximum interference between parts. (Lower limit of hole dimension - Upper limit of shaft dimension) โ From the textbook 16.04... Define Tolerance. Answer: The total permissible variation of a size. It is the difference between the upper limit and the lower limit. โ From the textbook 16.04... Define Basic Size. Answer: The size from which the limit dimensions were derived. โ From the textbook 16.04... Define Clearance. Answer: Refers to a fit where there is space between the two mating parts. โ From the textbook 16.04...
โ From the textbook 16.04... What kind of fit? This fit is intended where accuracy of location is important but a small amount of clearance or interference is permissible. (English Fit) Answer: LT (Locational Transition Fit) โ From the textbook 16.04... What kind of fit? This fit is intended where accuracy of location is of prime importance and where parts require rigidity and alignment with no special requirement for bore pressure. (English Fit) Answer: LN (Locational Interference Fit) โ From the textbook 16.04... What kind of fit? This fit is characterized by maintenance of constant bore pressures throughout the range of sizes. Difference between its minimum and maximum values is small to maintain the resulting pressures within reasonable limits. (English Fit) Answer: FN (Force or Shrink Fit) โ From the textbook 16.04... What kind of fit? This fit is used for wide commercial tolerances or allowances on external members. (Metric Fit) Answer: Loose Running Fit. โ From the textbook 16.04...
What kind of fit? This fit is not for use where accuracy is essential, but is good for large temperature variations, high running speeds and heavy journal pressures. (Metric Fit) Answer: Free Running Fit. โ From the textbook 16.04... What kind of fit? This fit is intended for running on accurate machines and for ensuring accurate location at moderate speeds and journal pressures. (Metric Fit) Answer: Close Running Fit. โ From the textbook 16.04... What kind of fit? This fit is not intended to run freely, but is intended to move and turn freely and locate accurately. (Metric Fit) Answer: Sliding Fit โ From the textbook 16.04... What kind of fit? This fit provides a snug fit for locating stationary parts; they can be freely assembled and disassembled. (Metric Fit) Answer: Locational Clearance Fit โ From the textbook 16.04... What kind of fit? This fit provides for accurate location and a compromise between clearance and interference. (Metric Fit) Answer: Locational Transition Fit
โ From the textbook 16.06... As you begin to apply geometric tolerances, the goal is to add just enough datums to... Answer: Immobilize the part. (Like mates!) โ From the textbook 16.06... Contains the geometric characteristic symbol, the geometric tolerance and the relative datums. Answer: Feature Control Frame โ From the textbook 16.06... As you apply datums to a part, you must specify... Answer: The order of precedence. โ From the textbook 16.06... The imperfections in the geometry of the part must fall within... Answer: The theoretically perfect tolerance zones from the established datums. โ From the textbook 16.06... The main difference between conventional tolerancing and the geometric tolerance of position is that... Answer: The part is not dimensioned by limit dimensions but by basic dimensions, or true position dimensions.
โ From the textbook 16.06... Define Basic Dimensions. Answer: They are shown on a drawing with a box surrounding the number, and are theoretically exact. โ From the textbook 16.06... This modifier allows the size of the zone to change if the size of the hole changes. This is the condition in which a feature of size contains the maximum amount of material within the stated limits of size. Answer: Maximum Material Condition (MMC) โ From the textbook 16.06... This is the condition in which a feature of size contains the minimum amount of material within the stated limits of size. Answer: Least Material Condition (LMC) โ From the textbook 16.06... These tolerances are for individual features and are not related to any datums. Answer: Form Tolerances. โ From the textbook 16.06... This tolerance specifies a 3-D tolerance zone define by two parallel planes.
- All points on the specified surface must fall between two imaginary planes.
โ From the textbook 16.06... This tolerance specifies a 2-D tolerance zone that is defined by two contours. The tolerance may specify a datum reference, when a datum is not specified, the tolerance controls the shape of the contour. Answer: Profile of a line. โ From the textbook 16.06... This tolerance specifies a 3-D tolerance zone defined by two contoured surfaces. It is equally disposed on either side of the perfect geometry unless specified otherwise. Answer: Profile of a surface. โ From the textbook 16.06... This distribution is when profile tolerances are equally distributed about the perfect geometry of the feature. Answer: Bilateral-Equal Distribution. โ From the textbook 16.06... This distribution is when the tolerance zone is on the outside of the perfect geometry. Answer: Unilateral-Outside โ From the textbook 16.06...
This distribution is when all of the tolerance zone is specified inside of the perfect geometry. Answer: Unilateral-Inside โ From the textbook 16.06... This distribution is when the tolerance zone is part outside and part inside of the perfect geometry. Answer: Bilateral-Unequal โ From the textbook 16.06... This tolerance specifies a 3-D tolerance zone that can control the orientation of a surface or axis of a hole or cylinder relative to a datum. Answer: Parallelism โ From the textbook 16.06... This tolerance specifies a 3-D tolerance zone that can control the orientation of a surface or axis of a hole or cylinder relative to a datum. It is defined by the area between two parallel planes. Answer: Perpendicularity โ From the textbook 16.06... This tolerance demonstrates one of the the disadvantages of using plus-minus dimensioning to control angular surfaces. It specifies a 3 - D tolerance zone defined by the area between two parallel planes, that can control the orientation of surface or axis of a hole or cylinder relative to a datum. Answer: Angularity
โ From the module 4.1... In SW, instead of dimensioning holes, you can use this tool on holes made with the hole wizard. Answer: Hole Callout โ From the module 4.1... With every dimension comes.... Answer: Uncertainty! โ From the module 4.1... The range of variability that sill guarantees that the design will perform as intended. Answer: Tolerance โ From the module 4.1... Establishing the least restrictive dimensions on parts that will allow the device to perform as intended is a requirement of... Answer: True design โ From the module 4.1... T/F: Great designs do their job with the least precise (costly) components possible. Answer: True! โ From the module 4.1... When dimensioning, you should always be aware of ______. Does your choice of dimensions reflect how you intend for parts to be made and assembled so that the device works? Answer: Design Intent
โ From the module 4.1... T/F: If the parts are dimensioned on one side, symmetry can be assumed. Answer: False. โ From the module 4.1... Dimensioned written with REF nearby are... Answer: Reference Dimensions (also shown within parentheses) โ From the module 4.1... In an engineering drawing, every dimension must have a tolerance. True? Answer: Yes, every single one. โ From the module 4.1... Best practice is to dimension hole features in the view where they're showing in the drawing as... Answer: Circles. โ From the module 4.1... It's okay to dimension to hidden lines on a part. True? Answer: No, bad practice. โ From the module 4.1...
