Free 4A practice questions
Part A of the 4th Class Power Engineer exam is free on Pass 4. That's 1,928 questions across 12 units and 56 chapters, with an explanation for every answer choice. Try six of them below, then sign in with your email to quiz every chapter.
Try six real Part A questions
These come straight from the Part A question bank, one each from six units. Pick an answer to see why each choice is right or wrong.
Which statements fit the American Boiler Manufacturers Association definition of a boiler?
- 1. A closed vessel that only heats water, without making steam, can count as a boiler.
- 2. A closed vessel that superheats steam can count as a boiler.
- 3. A boiler can work under vacuum and still fit the definition.
- 4. The definition says the heat must come from burning fuel.
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A. 1, 2 and 3
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B. 1, 2 and 4
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C. 1, 3 and 4
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D. 2, 3 and 4
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E. 1, 2, 3 and 4
A chemical analysis shows that a moist boiler fuel contains oxygen. When you work out how much oxygen the air must supply, what is usually done with this fuel oxygen?
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A. Subtract it from the oxygen the hydrogen needs.
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B. Subtract it from the oxygen the carbon needs.
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C. Subtract it from the oxygen the sulfur needs.
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D. Add it to the oxygen the hydrogen needs.
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E. Make no change, as is usually done for a dry fuel.
A plant has a driven generator, a battery and a photocell. In that order, how does each one produce its voltage?
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A. Chemical process; mechanical drive; photovoltaic action.
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B. Mechanical drive; chemical process; photovoltaic action.
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C. Photovoltaic conversion; chemical process; mechanical drive.
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D. Mechanical drive; photovoltaic action; chemical process.
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E. Chemical process; photovoltaic conversion; mechanical drive.
Which state of matter keeps a definite volume but takes the shape of whatever container holds it?
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A. Liquid
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B. Solid
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C. Gas
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D. Plasma
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E. Amorphous solid
After an operator is injured, the plant recruits a replacement operator, pays the replacement's wages, and removes product that was damaged. Which cost category does each of these expenses fall under, in that order?
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A. Employee associated; administrative; capital.
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B. Administrative; production; legal and regulatory.
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C. Administrative; employee associated; capital.
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D. Production; employee associated; administrative.
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E. Administrative; insurance; legal and regulatory.
A support does not move. A carriage moves along a rail at a steady speed. A trolley is speeding up. Which choice gives the branch of mechanics for the support, then the carriage, then the trolley?
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A. Statics; dynamics; dynamics
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B. Statics; statics; dynamics
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C. Dynamics; statics; statics
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D. Dynamics; dynamics; statics
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E. Dynamics; dynamics; dynamics
Each question links to its unit, where you can see every chapter in it.
What you get in Part A, free
- 12 units and 56 chapters, in curriculum order.
- 1,928 questions, with an explanation for every answer choice.
- 56 chapter quizzes. Missed questions come back in a unit review.
- 1,069 questions with a diagram in their explanation. Of those, 683 are animated or interactive.
- 56 chapter podcasts, each free to play with its transcript.
- 12 unit cheatsheets with each unit's terms, limits and formulas, and a PDF to download. You find it on the unit's page once you sign in.
- A timed practice exam: 100 questions, 3 hours, 65% to pass.
Sign-in is by emailed link, with no password. No card is needed for Part A.
The 12 Part A units
| Unit | Exam weight | Chapters |
|---|---|---|
| A1 Mechanics & Dynamics | 7% | 9 |
| A2 Chemistry & Thermodynamics | 10% | 4 |
| A3 Codes & Standards | 4% | 3 |
| A4 Power & Heating Plant Safety | 10% | 5 |
| A5 Environment | 6% | 3 |
| A6 Materials & Welding | 7% | 3 |
| A7 Piping & Valves | 7% | 2 |
| A8 Electricity | 7% | 6 |
| A9 Instrumentation & Controls | 10% | 6 |
| A10 Plant Communication | 2% | 3 |
| A11 Boilers | 15% | 6 |
| A12 Boiler Systems | 15% | 6 |
Pass 4's estimate of each unit's share of a 100-question paper. Regulators publish the units but not a per-unit question count.
Not sure where to start? The study plan orders every unit by its exam weight. For the exam itself, read the 4th Class exam guide.
How the practice exam works
The Part A practice exam is timed like the real paper: 100 questions, 3 hours, 65% to pass. It draws from every unit, weighted by each unit's exam weight. That format matches what SOPEEC, Technical Safety BC, ABSA, TSASK and TSSA publish. Check your own regulator before you book.
Listen as well as read
Every Part A chapter has a podcast you can play in the browser or download as an MP3, with its transcript. Open the podcasts.
Start with one chapter tonight
Enter your email and we send you a link to sign in. There's no password to make or remember.
When you're ready for the second paper, see 4B practice questions.
Pass 4 is not affiliated with SOPEEC, Technical Safety BC, or any other exam or licensing body.