4th Class Power Engineering · Part A and Part B
Practice exams, quizzes, cheatsheets and podcasts for both parts of the exam, Part A and Part B, with an explanation for every answer choice. Built on the curriculum of TSBC (BC), ABSA (Alberta), TSSA (Ontario) and SOPEEC.
FreePart A is free.PaidPart B unlocks with a paid plan.
Part AFreeAs of Nov 2026
Part BPaidAs of Nov 2026
01What Pass 4 is
Pass 4 covers both parts of the 4th Class exam. Each part is broken into units and chapters that follow the curriculum of TSBC (BC), ABSA (Alberta), TSSA (Ontario) and SOPEEC, and each chapter has its own quiz. After every answer you see why each choice is right or wrong, so a miss still teaches you something.
Some ideas are easier to see than to read. In Part A, 1,069 questions carry a diagram in their explanation. Of those, 683 are animated or interactive, and the rest are still drawings. In Part B, 789 questions carry a diagram in their explanation. Of those, 484 are animated or interactive, and the rest are still drawings. Most of these are animations you can play and step through. A few diagrams are interactive and let you change the conditions, like this safety valve: raise the boiler pressure and watch it pop, relieve and reseat.
1,495 kPaSimmering · near set pressure
Blowdown(1515 − 1455) ÷ 1500 = 4.0%
Chapter lectures as audio, to study on the go. Play one in the browser or download the MP3.
Open the podcastsA study guide for a unit, with its terms, limits and formulas in one place and a PDF to download. You find it on the unit's page once you sign in.
Browse the units02Part A free, Part B paid
Part AFree
Free
The first part of the 4th Class exam, with its timed practice exam: 100 questions, 3 hours, 65% to pass. Study it chapter by chapter without paying anything.
Part BPaid
6 Month AccessOne-time paymentC$193.50 one timeSave C$64.50 · 1.5 months freeorMonthlyBilled monthlyC$43 /month
The second part, with its timed practice exam: 100 questions, 3 hours, 65% to pass. Unlocks with a paid plan.
03How it works
Each part is split into units and chapters in curriculum order. Start with the one your course is on.
Part B · 12 units · 55 chapters
Answer a chapter's questions, then read why each choice is right or wrong. Missed questions come back in a unit review.
Every choice explained
A timed exam drawn from every unit, weighted by each unit's estimated exam weight.
Part B · 100 Q · 3 h · 65% to pass
Narrated chapter podcasts talk you through the material, for the drive to work or a night off the books.
Audio · by chapter
04Units
Pick a unit to see its chapters. Each chapter is a quiz you can finish in one sitting and come back to.
05Sample question
This one is from Part B, unit B2 Pumps & Compressors. Pick an answer to see how Pass 4 explains it, right or wrong.
A centrifugal pump on suction lift is primed from an external water supply. During priming, what is the role of the foot valve at the bottom of the suction line?
A. It progressively throttles the flow entering the impeller eye during normal pumping operation
B. A check valve holding the priming water in the line instead of draining back to the source
C. It admits air to break the suction-line siphon whenever the pump is stopped
D. It filters debris and weeds out of the incoming water
06Start
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FreePart A is free.PaidPart B unlocks with a paid plan.