ADDA Drafting Certification: Competency 1(General Terminology) Exam Study Guide

ADDA Drafting Certification: Competency 1(General Terminology) Exam Study Guide centimeters - Answer-1/100th of a meter millimeters - Answer-1/1000ths of a meter meter - Answer-basis for metric system; = to 100 cm, 1000mm, 10 dm, etc. decimeter - Answer-1/10th of a meter American Society of Mechanical Engineers - Answer-ASME dekameter - Answer-10 meters kilometer - Answer-100 dekameters; 1000 meters 25.4 - Answer-millimeters per inch fraction - Answer-part of a whole, such has 1/2 or 1/4 1:2 - Answer-half scale 2:1 - Answer-double size drawn to scale - Answer-drawing an object to a set proportion EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISH SEPTEMBER 2024 Page 2/10 metric system - Answer-decimal system of wights and measures based on the meter and the kilogram; SI (international system) linear unit is millimeter lettering - Answer-single stroke gothic; TOM Q. VAXY is all the letters that are as tall as they are wide; drawn w/HB foreshortened - Answer-surfaces do not give a clear or accurate representation of the size or shape of the surface or features and should not be dimensioned; lines and surfaces that are inclined to the picture plane appear this way bisecting - Answer-dividing into two equal parts; drawn by setting compass length greater than half of line's length and striking arc w/center at each endpoint, then drawing a line perpendicular to the original line through the point where the arcs crossed equilateral - Answer-all side lengths are equal concentric - Answer-having a common center 180º - Answer-number of degrees in a triangle 360º - Answer-number of degrees in a circle [and quadrilateral] quadrant - Answer-one of four sections into which the coordinate plane is divided (and/or a circle) revision block - Answer-placed in upper righthand corner of page; brief listing of revisions made to a drawing since it was initially released to manufacture, includes revision zone, letter, date, and name of revisor and revising checker EMILLYCHARLOTTE 2024/2025 ACADEMIC YAER ©2024 EMILLYCHARLOTTE. ALL RIGHTS RESERVED FIRST PUBLISH SEPTEMBER 2024 Page 3/10 surface finish mark - Answer-can appear as checkmark, check with micron-smoothness number in it, a V, or an S with a line through it where it intersects the object line; indicates surfaces that are machine finished 8.5" x 11" - Answer-A-size layout 11" x 17" - Answer-B-size layout 17" x 22" - Answer-C-size layout 22" x 34" - Answer-D-size layout 34" x 44" - Answer-E-size layout 28" x 40" - Answer-F-size layout beam compass - Answer-compass where arm is extended by beam; allows large circles to be drawn two-bevel scale - Answer-scale where cross-section looks like trapezoid four-bevel scale - Answer-scale where cross-sec