Worksheets2.1 Terms Review
Total questions: 30
Worksheet time: 15mins
What does the term "specified dimension" refer to?
The smallest possible measurement allowed for a part
The dimensions noted or, in the case of a tolerance, the part of the dimension from which the limits are calculated.
The largest possible measurement allowed for a part
The final dimension of a part after manufacturing
What is the definition of "specification"?
A detailed description of how something should be done, made, etc.
The process of adding material in layers for 3D printing
A list of materials needed for a project
A graph used to display data
What is "unilateral tolerance"?
A tolerance that allows variation in both directions from the specified dimension
A tolerance in which variation is permitted in only one direction from the specified dimension
A type of tolerance applied to interchangeable parts only
A tolerance that applies only to parts with complex features
What does "bilateral tolerance" allow?
Variation in only one direction from the specified dimension
Variation in both directions from the specified dimension
The largest possible measurement allowed for a part
A tolerance that strictly enforces no variation
What are "limit dimensions"?
The middle point between the largest and smallest possible dimensions
The largest and smallest possible boundaries to which a feature may be made as related to the tolerance of the dimension
A list of parts required for assembly
The maximum amount of variation allowed in a part
What does the term "variation" refer to?
A measurement of the precision of an instrument
A difference between an object or idea and other objects or ideas of the same type or from a standard
A measure of how often something occurs
The final manufacturing size of a part
What is the definition of "tolerance"?
The process of improving a product’s dimensions
The acceptable amount of dimensional variation that will still allow an object to function correctly
The act of measuring parts in production
The best possible design quality for a part
What are "interchangeable parts"?
Components that are identical and can be substituted for one another without modification
Parts that are custom-made for each individual project
Components that can only fit together in one specific configuration
Parts that cannot be replicated or reproduced in manufacturing
What does "mating" mean in mechanical design?
The process of producing identical parts
Two areas of one or more parts that contact each other, such as flanges, edges, or aligned holes
The adjustment of parts to meet the specified dimensions
The process of selecting parts that fit together with a desired clearance
What is "mean" in the context of statistical data?
The most frequent value in a data set
The difference between the highest and lowest values in a set
The average of a set of numeric data values
The total range of possible data values
What is the definition of "standard deviation"?
The distance of a value in a population (or sample) from the mean value of the population
The total variation in a dataset
The central value around which data points cluster
The average of all the data points
What does "accuracy" measure?
The degree of closeness of measurements of a quantity to the actual (or accepted) value
The consistency of repeated measurements
The statistical average of data points
The method of arranging data visually
What does "precision" refer to in measurements?
The ability to achieve the correct result every time
The degree to which repeated measurements show the same result
The process of selecting parts for manufacturing
The accuracy of a measurement compared to a standard
What is "additive" manufacturing?
A process that cuts or removes material from a part to achieve the desired shape
A method used for rapid prototyping where objects are built by adding layer upon layer of material
A type of manufacturing that focuses on creating complex geometric shapes
A method where parts are assembled by welding or bonding
What is a "dot plot"?
A method for displaying data as bars in a graph
A method for visualizing a distribution of data values, where each value is shown as a dot or mark above a number line
A technique used to calculate the mean of a dataset
A way to visually represent the spread of data in a bell curve
What is a "histogram"?
A method for calculating the standard deviation of a dataset
A graph of vertical bars representing the frequency distribution of a set of data
A process of assembling parts into a final product
A system for arranging parts in order of size
What does "normal distribution" describe?
A distribution of data with skewed or uneven spread
A symmetrical, bell-shaped graph that represents the distribution of variables
A distribution of data points that are all identical
A graphical method for organizing data into categories
What is "selective assembly"?
The process of selecting parts from multiple stock options to ensure the desired fit and clearance when assembled
The creation of parts that are interchangeable without modifications
The method of calculating the average value of a dataset
A manufacturing method where no tolerance is allowed for variation
What are "significant digits"?
The digits in a number that are used for approximating values
The digits in a decimal number that contribute meaning and precision to the value
The smallest possible digits allowed in a measurement
The digits that appear most often in a dataset
What is an "allowance" in mechanical design?
The difference between the largest and smallest possible measurements
The tightest possible fit between two mating parts
The standard tolerance allowed for part production
The amount of variation in a design that is acceptable
What is the "empirical rule"?
A rule that states nearly all data will fall within three standard deviations of the mean in a normal distribution This rule is also known as the 68-95-99.7 Rule because 68% of data falls within the first standard deviation from the mean; 95% fall within two standard deviations; 99.7% fall within three standard deviations.
A rule that governs the allowable error in manufacturing tolerances
A method for predicting future data trends
A rule that calculates the mean of a set of data
What does "assembly" refer to?
The process of adding material in layers to form an object
A group of parts that are connected to form one unit
A list of parts specified for a project
A manufacturing process where parts are treated for durability
What is "translation" in the context of motion?
Motion where an object spins around a fixed axis
Motion in which all particles of a body move with the same velocity along parallel paths
Motion that changes the size of a part
A type of mechanical assembly technique
What is "rotation"?
Motion where all parts of an object move together in the same direction
Turning around an axis or center point
The process of fitting parts together in an assembly
The motion of an object that changes shape
What does "degree of freedom" mean?
The number of possible directions in which an object can move
The total distance an object moves in one cycle
The flexibility of a design based on dimensions
The process of assembling parts into a produ
What is "commercial off the shelf" (COTS)?
A product that already exists and does not need to be custom designed or produced
A custom-designed product made for a specific application
A part that is made using additive manufacturing techniques
A component that can only be used in high-precision instruments
What is a "parts list"?
A list of all the components that are identical and interchangeable
A list of materials or parts specified for a project, also referred to as a bill of materials (BOM)
A record of the dimensions of parts for a project
A selection of parts based on their fit and tolerance
What does it mean for something to be measurable?
It can be quantified or evaluated based on set criteria
It can only be observed visually
It is defined by exact specifications
Able to be measured.
Measurable design criteria should provide a precise indicator of a quantifiable characteristic so that a design can be compared to the criteria and deemed acceptable or unacceptable.
Tolerances
The acceptable amount of dimensional variation that will still allow an object to function correctly.
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A product that already exists that does not need to be custom designed and produced.
Motion in which all particles of a body move with the same velocity along parallel paths.
Iterative
A process that repeats a series of steps over and over until the desired outcome is obtained.
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f: A product that already exists that does not need to be custom designed and produced.
The degree of closeness of measurements of a quantity to the actual (or accepted) value.
