IME 144 - Tolerances, Fits, Datums, and GD&T Exam with Complete Solutions

IME 144 - Tolerances, Fits, Datums, and GD&T Exam with Complete Solutions What is the purposes of tolerancing? ANSWER Interchangeability, form of quality control Tolerance ANSWER Amount of variation permitted How should tolerances be chosen? ANSWER Required for the design to work but not unnecessarily or excessively accurate Interference fit ANSWER Limits the size of mating parts so that an interference always results when mating parts are assembled, external is bigger Transition fit ANSWER Occurs when two mating parts can sometimes have a clearance fit and sometimes have an interference fit, either can be bigger Clearance fit ANSWER Limits the size of mating parts so that a clearance always results when mating parts are assembled, hole is bigger Limits ANSWER Maximum and minimum size the part is allowed to be Basic size or target dimension ANSWER Size from which limits are calculated Maximum material condition (MMC) ANSWER The condition of a part when it contains the greatest amount of material possible