Year 2 Exam Study Guide — master what the exam actually tests, concept by concept.
Mechanical trades involve high pressures, extreme temperatures, rotating machinery, and chemical hazards. The exam tests whether you can identify risks before they become incidents — covering everything from confined space entry to pressure testing safety.
Grind: smooth sharp edges (safety), improve appearance, prepare for paint/weld. Safety regulations exist because the consequences of ignoring them are severe — injury, death, or legal liability. Know these requirements the way you know your own name.
Mechanical work is governed by a stack of codes: plumbing codes, gas codes, pressure vessel codes, ASHRAE standards, and provincial regulations. Exam questions test your ability to apply these standards to real scenarios — knowing when a rule applies, what the limit is, and why it exists.
Angle layout: tan(θ) = opposite/adjacent; measure height at known length to find angle. Memorize this formula and practise substituting values — exam questions often give you three variables and ask you to solve for the fourth.
GD&T: perpendicularity, parallelism, concentricity, runout control geometric accuracy. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Mechanical systems live and die by numbers — the wrong pipe size creates pressure loss, the wrong refrigerant charge affects efficiency, the wrong gas orifice is a hazard. These calculations aren't abstract math; they're engineering decisions made in the field every day.
Pyramid roll: three rollers adjust to create controlled radius; used for cylindrical/conical shapes. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Pipes, valves, fittings, and mechanical components have ratings, classifications, and compatibility requirements. Using the wrong material can fail an inspection, void a warranty, or create a dangerous condition. This section covers proper material selection and equipment knowledge.
Flame cutting: preheat, jet ignites carbon; works only on carbon/low-alloy steel. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Jigs: repeatable positioning; fixtures: hold; essential for accuracy in mass production. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
A36: 36 ksi minimum yield, 58-80 ksi tensile; ductile, weldable, low cost. Material selection directly affects performance, code compliance, and longevity. Using the wrong type can fail an inspection or create a hazard down the line.
Procedure matters in mechanical work. The order of operations, the proper testing sequence, the way you commission a system — doing it right the first time means no leaks, no callbacks, and no danger. This section covers procedures as they appear on the exam and as they're done on the job.
Layout: center punch marks, inscribed lines, dimension verification before cutting. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Cold bending small tubes: use mandrels (internal support) or heat to prevent ripple/kinking. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Plasma: hot ionized gas arc; universal, no material restrictions, fast, clean cuts. Safety regulations exist because the consequences of ignoring them are severe — injury, death, or legal liability. Know these requirements the way you know your own name.
All 10 exam concepts from this guide — test your recall before you sit the exam.