Mechanical Drafting – ADDA Certification Practice Exam (50 Questions) – CAD, Tolerances, Fits | 2025/2026 | Technical Drawing

This document is a fully updated and comprehensive practice exam for the ADDA Mechanical Drafter Certification – Part II for the academic year 2025/2026. It contains 50 carefully selected questions with verified correct answers, simulating the format and content of the actual certification exam. The material covers a broad range of essential drafting and design topics, including CAD systems (hardware, software, user roles), dimensioning methods (size and location), tolerances, types of fits (clearance, interference, transition), section views, feature control frames, geometric characteristic symbols, and multiview drawing standards per ASME Y14.3M. This resource is ideal for students, trainees, or professionals preparing for the ADDA Mechanical Drafter Certification. It also serves as an excellent study companion for anyone enrolled in mechanical drafting, CAD technology, engineering graphics, or technical drawing courses. Whether used for final exam review, certification prep, or classroom support, this practice exam provides focused and industry-relevant content. The document aligns with the curriculum of community colleges, technical institutes, and engineering departments of U.S. universities, making it particularly useful for students in mechanical engineering technology, drafting and design technology, or industrial engineering programs. Keywords: mechanical drafting, ADDA certification, CAD components, tolerance calculation, geometric dimensioning, feature control frame, multiview drawing, ASME Y14.3M, clearance fit, interference fit, transition fit, linear dimensions, technical drawing exam, drafting standards, engineering graphics