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Free SOPEEC Fourth Class Power Engineer Examination Part A (4A) Practice Questions

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Sample Practice Questions

Try these 10 sample questions from the SOPEEC Fourth Class Power Engineer Examination Part A (4A) practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

  1. 1A liquid sample has a mass of 18 kg and occupies 0.020 m³. What is its density?

    1. A.0.36 kg/m³
    2. B.90 kg/m³
    3. C.900 kg/m³Correct answer: C
    4. D.9,000 kg/m³

    Explanation: DOE states, "Density is a measure of the mass of an object per unit volume". Thus ρ = m/V = 18 kg / 0.020 m³ = 900 kg/m³. Multiplying mass by volume gives 0.36; 90 and 9,000 reflect decimal-place errors.

    Reference: DOE Fundamentals Handbook: Classical Physics — CP-01, Fundamental Dimensions, p. 7

  2. 2Which atomic property is identified by the atomic number of an element?

    1. A.Number of neutrons in its nucleus
    2. B.Number of protons in its nucleusCorrect answer: B
    3. C.Sum of its protons and neutrons
    4. D.Number of occupied electron shells

    Explanation: DOE states, "The number of protons in the nucleus plays such an important role in identifying the atom that it is given a special name, the atomic number." Neutron count, mass number and shell count describe other atomic properties.

    Reference: DOE Fundamentals Handbook: Chemistry, Volume 1 — CH-01, Characteristics of Atoms, Atomic Number

  3. 3In Ontario, an inspector finds pressure equipment operating in a dangerous manner. Which action is within the safety authority described by TSSA?

    1. A.Require its removal from serviceCorrect answer: A
    2. B.Defer the hazard until its next periodic inspection
    3. C.Accept an owner's waiver in place of correcting the danger
    4. D.Treat its manufacturer's warranty as operating approval

    Explanation: TSSA states that its BPV inspector "may require the removal from service of any pressure equipment that is in an unsafe operating condition". Immediate unsafe operation can therefore justify removal. A future inspection date, owner waiver or manufacturer warranty does not resolve the identified danger.

    Reference: TSSA: Inspections—Boilers, Pressure Vessels and Piping Systems — Removing equipment from service

  4. 4Which plant change is an example of preventing pollution at its source?

    1. A.Treating a waste stream after it has formed
    2. B.Replacing a process so it generates less hazardous wasteCorrect answer: B
    3. C.Sending generated waste to an off-site disposal facility
    4. D.Collecting an existing emission in an end-of-pipe filter

    Explanation: Environment and Climate Change Canada describes planning to "eliminate or reduce pollution at its source". Changing the process to generate less waste acts before creation. Treating, disposing of or capturing waste after generation are downstream management measures.

    Reference: ECCC: Create and Implement Your Pollution Prevention Plan — Introduction

  5. 5Which property describes a metal's ability to undergo substantial plastic deformation in tension before rupturing?

    1. A.Hardness
    2. B.Elasticity
    3. C.DuctilityCorrect answer: C
    4. D.Compressive stiffness

    Explanation: DOE describes ductility as "the ability of a material to withstand plastic deformation without rupture." This concerns permanent deformation capacity, not resistance to indentation, reversible strain, or resistance to compressive deflection.

    Reference: DOE Fundamentals Handbook: Material Science, Volume 1 — MS-02, Physical Properties, Ductility

  6. 6In a steam main, accumulated condensate is swept rapidly into an elbow and produces a violent impact. What mechanism is occurring?

    1. A.Slow thermal expansion of dry steam
    2. B.Uniform expansion of the steel pipe wall
    3. C.Waterhammer from a moving condensate slugCorrect answer: C
    4. D.Steady flow through a correctly drained main

    Explanation: Spirax Sarco describes waterhammer as "slugs of condensate colliding at high velocity into pipework fittings". The dense liquid's impact explains the event. Slow expansion and steady dry-steam flow do not describe this sudden liquid-slug impact.

    Reference: Spirax Sarco: Steam Mains and Drainage — Waterhammer and its effects

  7. 7A 24 V DC supply is connected across an 8 Ω resistor. What current flows through it?

    1. A.0.33 A
    2. B.3 ACorrect answer: B
    3. C.16 A
    4. D.192 A

    Explanation: DOE states, "Current is equal to the applied voltage divided by the circuit resistance." I = V/R = 24 V/8 Ω = 3 A. The other values invert the ratio, subtract resistance from voltage, or multiply the two values.

    Reference: DOE Fundamentals Handbook: Electrical Science, Volume 1 — ES-01, Units of Electrical Measurement, Ohm’s Law, p. 14

  8. 8A plant equipment sketch is drawn at a scale of 1:20, with no printing distortion. A pipe length measures 30 mm on the sketch. What actual length does it represent?

    1. A.1.5 mm
    2. B.30 mm
    3. C.150 mm
    4. D.600 mmCorrect answer: D

    Explanation: The handbook states, "The scale of a drawing is usually presented as a ratio". Here 1 mm drawn represents 20 mm actual, so actual length = 30 × 20 = 600 mm. Dividing by 20 gives 1.5 mm and reverses the scale; 30 mm ignores it; 150 mm uses an incorrect factor.

    Reference: DOE Fundamentals Handbook: Engineering Symbology, Prints, and Drawings, Volume 1 — PR-01, Introduction to Print Reading, Drawing Scale

  9. 9What furnace arrangement characterized the historical Lancashire boiler?

    1. A.One central furnace with an annular water space only
    2. B.Two large furnace flues passing through a common shellCorrect answer: B
    3. C.A bank of small water tubes with no enclosing shell
    4. D.A pair of steam drums joined solely by downcomers

    Explanation: The historical description identifies "two large-bore furnace tubes" in the Lancashire boiler's steel shell. These flues contained the furnaces. The other arrangements confuse it with single-furnace or water-tube configurations.

    Reference: Spirax Sarco: Shell Boilers — Lancashire boiler

  10. 10What combustion problem can result when a boiler burner receives too little air for its fuel supply?

    1. A.More complete oxidation of the fuel
    2. B.Higher available oxygen in the exhaust
    3. C.Incomplete combustion of the fuelCorrect answer: C
    4. D.Lower unburned-combustible formation

    Explanation: Natural Resources Canada states, "Too little air means incomplete combustion". Insufficient air limits the oxygen available to burn the fuel; it does not improve oxidation, increase available oxygen, or reduce unburned fuel.

    Reference: Natural Resources Canada: Buying and Operating Tips—Commercial Boilers — Operating tips, Control combustion air

Exam Review

About SOPEEC Fourth Class Power Engineer Examination Part A (4A)

SOPEEC Fourth Class Power Engineer Examination Part A (4A) · CA

Key exam facts

Provider
The Association of Chief Inspectors (ACI) owns the examination materials. SOPEEC develops standardized content and syllabi and maintains the question banks. Member jurisdictions administer the examination; TSSA is the Ontario authority and Prometric provides its in-person computer-based testing.
Format
Written multiple-choice knowledge examination, administered as the independent Part A (4A) paper. Delivery arrangements vary by jurisdiction; Ontario uses in-person computer-based testing at Prometric centres.
Exam questions
Total questions: 100.
Time limit
3 hours of examination writing time for Part A. Confirm local arrangements with the examining jurisdiction; SOPEEC's web guidance describes this as the duration in most jurisdictions. Ontario's current guide also specifies 3 hours; arrival is 30 minutes earlier.
Passing score
At least 65% of the total marks allotted to the individual examination paper; Part A and Part B must each be passed.
Exam fee
Fees are set by the administering jurisdiction; there is no single Canadian fee asserted here. Ontario (TSSA): CAD 89 per examination, effective May 1, 2026, plus HST where applicable. Each rewrite is billed as a separate examination. Additional on-site invigilation charges apply when that service is requested; other jurisdictions have their own fees.

Topics covered

  • Elementary Mechanics and Dynamics

    • Perform basic calculations and define basic terms used in the study of mechanics.
    • Perform calculations using forces and moments, and determine whether or not a system is in equilibrium.
    • Define simple machines and perform calculations relating to mechanical advantage, velocity ratio, and efficiency.
    • Define and identify scalar and vector quantities, and solve simple vector problems graphically.
    • Define speed, velocity, distance, displacement, and acceleration, and solve simple linear problems involving these terms.
    • Define force, work, pressure, power, and, energy and perform calculations involving the relationships between these mechanical terms.
    • Describe friction and solve problems involving friction on a horizontal plane.
    • Explain the following: a. The physical properties of materials and how these properties affect the materials behaviour when external forces are applied b. Stress and the deformation of bodies caused by externally applied forces as well as the internal forces that resist these deformations, including tensile, compressive, and shear stresses plus factor of safety
    • Explain the common examples of power transmission systems, including speed changes, transmitted power, and efficiency.

  • Elementary Chemistry and Thermodynamics

    • Explain basic chemistry principles, basic types of matter, and their properties.
    • Explain the principles of thermodynamics, including the laws of thermodynamics.
    • Explain the modes of heat transfer and theory of operation of heat exchangers.
    • Describe the principles of the thermodynamics of steam and the associated terms.

  • Jurisdictional Legislation, Codes and Standards for Power Engineers

    • Describe the purpose of Jurisdictional acts and regulations with respect to boilers and pressure vessels and piping for Power Engineers.
    • Describe the purpose of Codes and Standards with respect to boilers and pressure vessels and piping for Power Engineers.

  • Power Plant/Heating Plant Safety

    • Describe general plant safety in power, heating, pressure and Industrial plants that employ Power Engineers.
    • Describe the common safety programs that are generally implemented in plants.
    • Describe the procedures for safe storage and handling of dangerous materials.
    • Explain fire safety in a plant.
    • Describe the causes of, the extinguishing methods, and preventive measures for fires.

  • Environment

    • Explain how the environment is related to the operating plant.
    • Explain how gas and noise emissions affect plant operation.
    • Explain how liquid and solid emissions affect plant operation.

  • Material and Welding

    • Describe the mechanical properties of engineering materials and the ability of alloying elements to change the mechanical properties of materials, and identify nonferrous materials as used in engineering.
    • Describe the welding processes that are relevant to the plant and Power Engineer.
    • Describe the inspection and testing methods of welds and materials used in plants.

  • Piping and Valves

    • Describe the basic types of piping, piping connections, supports, and drainage devices used in the industry.
    • Describe the design and uses of the valves designs most commonly used in industry plants and on boilers.

  • Electricity

    • Describe the concepts of basic electricity, and perform simple AC & DC calculations using voltage, current, resistance and power.
    • Describe the basic principles of magnetism as it relates to electricity.
    • Describe the designs and uses of electrical metering devices.
    • Describe the operating principles of the various types of AC and DC motors and generators.
    • Describe the operating principles of electrical transformers.
    • Describe an electrical distribution system and safe operation.

  • Energy Plant Instrumentation and Controls

    • Describe the overall purpose and function of plant instrumentation and control systems.
    • Describe the construction and operation of common devices used to measure pressure, level, flow, temperature, humidity, and composition.
    • Describe the basic types and functions of transmitters, recorders, controllers, and control actuators.
    • Describe the operation of programming controls for boilers and discuss testing and maintenance procedures for these controls.
    • Describe the design and operation of electronic control systems.
    • Describe the design and operation of electrical control systems.

  • Plant Communication

    • Describe how to setup plant and equipment sketches as well as how to complete a plant line tracing diagram.
    • Describe the common types of diagrams used in plants.
    • Describe the different types of and proper use of plant communication systems.

  • Boilers

    • Describe the historical development of boilers, boiler design, components and configuration.
    • Describe the design, components, and characteristics of firetube boilers.
    • Describe the design, components, and characteristics of watertube boilers.
    • Explain the general design and application of electric boilers.
    • Describe the special designs of boilers used in heating plants.
    • Describe the differences between ASME Section I and ASME Section IV boilers.

  • Boiler Systems

    • Discuss the basic theory of combustion in a boiler, and the equipment used to provide proper combustion conditions.
    • Describe the common fuel systems used in boiler systems.
    • Describe draft and the basic equipment used to supply combustion air to a boiler furnace.
    • Describe the types of feedwater systems used for boilers.
    • Describe the purpose, equipment, and operation of blow down in boiler systems.
    • Describe the purpose, equipment and operation of fireside cleaning in boiler systems.

How to prepare

Work through the topics, read the explanation after each answer, and revisit the areas where you miss questions. Use the official outline and reference materials below to guide your study.

These independent practice questions are not actual exam items and do not guarantee a passing result.

Frequently asked questions

What is the exam format?

Written multiple-choice knowledge examination, administered as the independent Part A (4A) paper. Delivery arrangements vary by jurisdiction; Ontario uses in-person computer-based testing at Prometric centres.

How many questions are on the exam?

Total questions: 100.

How long is the exam?

3 hours of examination writing time for Part A. Confirm local arrangements with the examining jurisdiction; SOPEEC's web guidance describes this as the duration in most jurisdictions. Ontario's current guide also specifies 3 hours; arrival is 30 minutes earlier.

What is the passing score?

At least 65% of the total marks allotted to the individual examination paper; Part A and Part B must each be passed.

How much does the exam cost?

Fees are set by the administering jurisdiction; there is no single Canadian fee asserted here. Ontario (TSSA): CAD 89 per examination, effective May 1, 2026, plus HST where applicable. Each rewrite is billed as a separate examination. Additional on-site invigilation charges apply when that service is requested; other jurisdictions have their own fees.

Official sources and references

Confirm current exam arrangements with the exam provider.