MAE 1351 EXAM 3; Questions and Answers 100% Correct

MAE 1351 EXAM 3 ; Questions and Answers 100% Correct Total runout (runout tolerance)[two arrows] Correct answer -3D control for rotating parts relative to a datum axis. (cylindrical surface = controls circularity, straightness, taper, concentricity, and surface profile; flat surface = controls wobble, perpendicularity, and flatness) Basic dimensions (those with a box around them)... Correct answer -are theoretically exact and locate the perfect position of features from clearly identified datums The feature control frame Correct answer -contains the geometric characteristic symbol, the geometric tolerance, and the relative datums Free running fit Correct answer -not for use where accuracy is essential, but are good for large temperature variations, high running speeds, and heavy journal pressures A dimension is expressed to the same number of inches of decimal places as its ________. Zeros are added to the _____ of the decimal point where necessary Correct answer -tolerance; right ASME stands for Correct answer -American Society of Mechanical Engineers Most drawings conform to the ______ system or they conform to the ____ system Correct answer -SI; U.S. Customary MAE 1351 EXAM 3 ; Questions and Answers 100% Correct Where the dimension is less than one millimeter... Correct answer -a zero precedes the decimal point Where the dimension is a whole millimeter... Correct answer -neither the decimal point nor the zero is shown Where the dimension exceeds a whole number by a decimal fraction of one millimeter... Correct answer -the last digit to the right of the decimal point is not followed by a zero T/F commas and spaces shall be used to separate digits into groups in specifying millimeter dimensions on drawings Correct answer -false T/F A zero is not used before the decimal point for values less than one inch Correct answer -true contour rule or contour dimensioning Correct answer -each dimension should be placed in the view where the contour shape is best shown T/F Dimensions should appear multiple times in different views on a drawing Correct answer -false, they should only apper once MAE 1351 EXAM 3 ; Questions and Answers 100% Correct Dimensioning and tolerancing shall be complete so that... Correct answer -there is full understanding of the characteristic of each feature circles are typically dimensioned as Correct answer -diameters arcs are dimensioned as Correct answer -radii T/F you should give dimensions between holes vs dimensioning the holes from the end of the part Correct answer -True Baseline Dimensioning Correct answer -all of the dimensions in a given direction originate from a base or datum (frequently used for CNC machines) Chain Dimensioning Correct answer -features are dimensioned relative to one another (used when a part function requires that features be related to one another) T/F chain dimensioning is often preferred over baseline Correct answer -False, Baseline dimensioning is prefrred