4B power engineering practice exam
Part B is the applied half of the 4th Class — the day-to-day plant: lubrication and bearings, pumps and compressors, boiler operation, water treatment, prime movers, refrigeration, and HVAC. Practise with 778 original exam-style questions written objective-by-objective to the public SOPEEC/ABSA 4th Class syllabus, sit unlimited mock exams in the real 100-question format, and walk in knowing exactly where you stand.
Original questions, written objective-by-objective to the public ABSA/SOPEEC 4th Class syllabus (AB-054) — not copied from any textbook or secured exam. One-time purchase, lifetime access. Independent; not affiliated with SOPEEC, ABSA, Technical Safety BC, TSSA, or PanGlobal.
The 4B exam format
The 4th Class certificate has two papers — Part A (4A) and Part B (4B) — and you write them separately. SteamTicket’s mock exams match the real 4B format exactly, so there are no surprises on exam day.
| Parameter | 4B (Part B) |
|---|---|
| Part of | 4th Class certificate (with 4A) |
| Questions | 100 multiple-choice |
| Time limit | 3 hours |
| Pass mark | 65% |
| Choices per question | 4 |
Last verified 27 June 2026 — see the exam-format facts and sources. Mock timing follows the SOPEEC-style 3-hour, 100-question format.
What 4B covers
Part B is the applied layer — how the plant actually runs. SteamTicket carries questions across all twelve Part B units, each keyed to its AB-054 objective.
Rotating equipment
B-1 Lubrication & Bearings · B-2 Pumps & Compressors · B-7 Prime Movers & Heat Engines
Boiler operation
B-3 Boiler Safety Devices · B-4 Boiler Plant Operation & Management
Maintenance & water
B-5 Energy Plant Maintenance · B-6 Water Treatment
Plant systems
B-8 Plant Auxiliary Systems · B-12 Typical Industrial Plant Configurations
Refrigeration
B-9 Compression & Absorption Refrigeration
HVAC & controls
B-10 HVAC Fundamentals · B-11 Building Environmental Systems & Control
4B or 4A — which do you need?
The 4th Class certificate is two separate papers. Most candidates write Part A first, then Part B — but you can prepare for them in any order your regulator allows.
Part B (4B) — this page
Applied plant operation: lubrication, pumps and compressors, boiler operation, water treatment, prime movers, refrigeration, and HVAC. 778 questions.
Part A (4A)
Fundamentals: mechanics, thermodynamics, governance, safety, materials, fluids, electrical, controls, and an introduction to boilers. 584 questions.
Writing both? The 4th Class bundle covers Part A and Part B together.
What’s included
778 original questions
Original, exam-style multiple choice written objective-by-objective to the public ABSA/SOPEEC 4th Class Part B syllabus (AB-054). Worked explanation on every answer.
Real-format mock exams
Timed 100-question mocks matching the real 3-hour format. Sit as many times as you like; review every answer afterwards.
Adaptive SMART Quiz
Every session is built from your own results — weak units first, spaced re-asks on questions you missed.
Works offline
Study on any device, with or without signal — handy on a job site or in a plant. Progress syncs when you reconnect.
Keyed to the syllabus
Every question carries its exact AB-054 objective reference, so you always know which objective you’re drilling.
One-time, lifetime
Pay $79 once. No subscription. Lifetime access includes future updates to the 4B bank, plus a 30-day refund.
Start with 20 free 4B questions
Run a real slice of the 4B bank — no account, no card. When you’re ready, it’s $79 once for the full 778-question bank, mock exams, and lifetime access.