Engines
Practice Tests
Test A — Easy
50 questions
Single-concept recall drawn directly from Student Guide language.
Test B — Medium
50 questions
Two-part stems, applied relationships, and plausible near-miss distractors.
Test C — Hard
50 questions
Multi-step reasoning, cross-chapter integration, and near-miss distractors. Read every stem twice.
Each test offers Exam Mode (graded at the end, like the real test) or Practice Mode (instant feedback per question), with an optional 5-minute dump sheet.
Chapter Reviews
30-question tests focused on specific chapters — drill one block of material at a time.
Chapters 1–3
Principles of Operation · Engine Sections · Compressor Stalls
Chapters 4–6
Engine Types · Hydraulic Systems · Electrical Systems
Chapters 6–9
Electrical · Fuel · Lubrication · Accessory, Starter & Ignition
System Diagrams
Fill in the blanked-out part names on each system diagram, then check your answers. Word Bank Mode to learn, Recall Mode to test yourself.
Hydraulic
13 parts to name
Electrical
15 parts to name
Fuel
18 parts to name
Lubrication
13 parts to name