ABSA 4th Class Practice Exam

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• Intermittently blowing off a steam boiler is primarily done to:
• Fire pumps usually start automatically with a signal from which component?
• Which of the following could be a reducing agent or fuel?
• What type of action is meant as a temporary measure when a problem in a plant has been identified?
• At what temperature is it said that all molecular motion ceases?
• What is the purpose of handhole and manhole openings?
• Types of maintenance can be categorized into which of the following groups?
• What does the Hartford Loop prevent in the boiler?
• Which of the following are types of expansion joints?
• What is one aspect that CSA B-52 code addresses?
• How is individual room temperature controlled in fin coil type heaters?
• What precaution should be taken when working with high voltages?
• It is the employer's responsibility to do what regarding personal protective equipment?
• The rotating field of an alternator is produced by applying what type of power to the rotor?
• What safety measure should be taken before working on an electric motor driven pump?
• What does the "Pressure Vessels" section of the B-51 code identify regarding pressure vessels?
• In terms of water density, how does warmer water compare to cooler water?
• What unit is commonly used to express velocity?
• What type of extinguisher is used to extinguish burning metals?
• If a welding electrode has the identifying number "E7015", what does the "70" represent?
• Which of the following statements about electrical systems is correct?
• What is the SI unit of measure for work?
• How can the field strength of an alternator be adjusted?
• In the early days of power plants, what type of workers were initially hired for manual labor?
• What are the most commonly used types of water coil circuiting?
• What type of ends do pipe nipples have?
• Which of the following is a key benefit of using a tie breaker?
• In a multi-burner cluster, secondary and tertiary nozzles are ignited by:
• What does a turning moment produced by a force represent in mechanical systems?
• Which of the following best describes a static body?
• What material is used in modern furnaces to form the furnace walls?
• Dewatering of liquid waste is an example of what type of treatment?
• What is the typical unit of measurement for sound pressure level in respect to intensity?
• What type of flange is commonly used in pipe connections to allow for misalignment?
• Who is likely to be one of the most important reviewers of a new standard operating procedure (SOP)?
• The two general designs of electric boilers are the:
• As compared to Penetrant Testing, what is true about Radiographic testing?
• A substance undergoes a change in composition, making it a different substance. This is classified as a:
• Which property is not considered an extensive property?
• What is required to progress to a higher certificate?
• Orifice plates, venturi tubes, and nozzles are part of which group?
• How long does it typically take to heat a fluidized bed to ignition temperature before introducing coal?
• If noise can't be reduced to safe levels by getting a quieter machine or by using sound absorbing materials around it, what can be done?
• Which material is most commonly used for sewage piping?
• Which fusion welding process utilizes a flame?
• What characterizes an open circuit?
• What happens to the pressure in a boiler when steam is suddenly released?
• What do you say when you've heard the message but need to put the caller on hold while using a two-way radio?
• What is the primary use of run time totals recorded by a computer?
• What is the best choice for extinguishing Class "B" fires?
• Which code relates to mechanical refrigeration?
• What is the first pass of a multi-pass weld called?
• What happens when a train accelerates uniformly from rest to its maximum velocity?
• In three-phase power systems, each conductor is how many electrical degrees out of phase with the others?
• What does the abbreviation 'CSA' stand for in regulations?
• If it is feasible to eliminate the root cause of a problem, what type of action is typically taken?
• What should be the condition of the environment when working with high voltages?
• A weld inspector uses ultraviolet light when performing which type of inspection?
• Pressure controllers can be divided into two classes which are?
• What is the primary function of push nipples?
• What device is often used to measure fluid pressure?
• If a material shows high reluctance, what does it indicate about its magnetic properties?
• Which valve is least susceptible to wire drawing and seat erosion?
• What do spills, seepages, and leaks collectively define as?
• How can radiators be classified?
• Fluidized bed boilers can successfully burn coal with ash contents as high as?
• The filler rod used in braze welding is usually made of which material?
• What characterizes a feedback system?
• What is the ratio between the ultimate strength and the allowable stress called?
• What regulation lists the requirements for writing a jurisdictional examination?
• Which of these is a key component to a maintenance management system?
• What is it called when magnetic flux from one coil induces an EMF in a second coil?
• How can cast iron boiler capacity be increased?
• When measuring magnetic fields, what direction do the lines of force typically flow?
• Boiler chimneys are commonly lined with?
• Which method is suggested to make waste disposal more effective?
• Which of these is not an internal component of a steam drum?
• What is defined as the internal resistance to an applied external force?
• What are the welds called that are performed on parts of a pressure vessel that contain internal forces?
• Which component is necessary for the operation of on-off thermostats?
• The transfer of heat involving the movement of a fluid is defined as what?
• Which code contains Rules For Construction of Power Boilers?
• To ensure the safe operation of a pressure reducing valve, what should the valve station include?
• The amount of current passed through the water of an electrode boiler depends on which factor?
• What should a receiver of a safety work permit do to ensure a safe work site?
• What should be done with SOPs?
• What is the consequence of using a valve not designed for slurries?
• What should you do on your two-way radio if you discover an injured worker?
• Which of the following is NOT a feature of a Van Stone flange?
• Which analog signal input can a PLC accept?
• If 1.2 kW of power is dissipated by a resistor when supplied with 110 V, what is the amperage?
• To avoid residual stresses after welding, alloy steels:
• Which of the following is NOT commonly found in all Acts?
• A membrane water wall is best described as?
• Which group meets at least once a year to discuss important issues for Power Engineers?
• Under a tensile load of 240 kN, what is the stress in a round bar that stretches 1.2 mm?
• What is the Electrical Classification of an area containing explosive dust concentrations?
• Defects such as cracks and porosity show up as what type of shadows in radiographic inspection?
• If a conductor is held stationary and a magnetic field is moved across it, it behaves according to what principle?
• Which statement about workplace injuries is true?
• What is the purpose of a U-tube manometer?
• Which of the following is NOT typically used for burning coal?
• If the boiler efficiency is 84%, what can be concluded about the heating value of the fuel?
• When water is converted to steam, it expands approximately how many times?
• What is the simplest way to measure draft in a system?
• Where can definitions for terms like "shift engineer" and "chief engineer" be found?
• What is the main purpose of the Boiler and Pressure Vessel Code?
• What does an induced draft fan handle?
• According to best practices, what is one of the best approaches for writing Standard Operating Procedures (SOPs)?
• Flyash collected by pollution control devices can be used:
• A car accelerates from 25 km/h to 110 km/h in 84 seconds. What is the distance traveled during this acceleration?
• What action is recommended to ensure safety when working near high-pressure pipes?
• What is an important feature of forced draft fans in a balanced draft system?
• What type of fire does Class "A" refer to?
• Before welding on a pressure vessel, what must a qualified pressure welder do?
• What type of fire should be extinguished with water?
• What summarises the relationship between steam and water volume?
• The operating voltage for a jet-type electrode boiler may be as high as _________ kilovolts?
• What kind of equipment is primarily reliant on installing nozzles on pressure vessels?
• Which inspection method uses color contrast to assess the integrity of welds?
• Which type of fire extinguisher is typically used on a live electrical fire?
• Why are asbestos fibres particularly harmful to workers' health?
• If a circuit has an applied voltage of 120 V and a current flow of 3 A, what is the resistance of this circuit?
• Who is responsible for health and safety in the workplace?
• Which safety measure is important for working with hazardous materials?
• What does the "15" in the welding electrode "E7015" typically indicate?
• Arc welding produces which of the following?
• Two main categories of manufactured steel piping are:
• Which of the following is NOT one of the three reservoirs of the carbon cycle?
• Top guard rings on gas cylinders are used instead of which item?
• What is the function of a pressure relief valve?
• Which of the following statements about thermal expansion is TRUE?
• What is the effect of using an air heater in a boiler?
• When are written communications preferred over verbal communications?
• What is the identifying feature of a float-operated level control?
• What is one main advantage of verbal communication?
• The total enthalpy of 11 kg of steam at 950 kPa abs is 24 528.713 kJ. Determine the dryness of the steam.
• What is one of the three mandatory markings on valves used in pressure piping?
• Which of the following is an example of an extensive property of a substance?
• Which term describes a type of valve that uses an electrical signal to control fluid flow?
• During the thermal expansion of an object, what does its length change depend on?
• Carbon that is chemically combined with hydrogen is typically referred to as?
• What is the purpose of idler gears?
• Which type of boiler material is least likely to experience leaks at the seams?
• What can be considered a common cause of disturbances in a plant?
• How is sound pressure level expressed?
• In regards to heat transfer, which method works through direct contact?
• In a control system, what is the function of a sensing element?
• The Act includes what for the enforcement of its provisions?
• What is the magnitude and direction of the resultant of various concurrent coplanar forces given in the scenario?
• What type of valve gives good throttling action but does not seal well?
• In an automatic control system, the controller output signal goes to which component?
• What is a characteristic of the inclined "U" tube manometer?
• What is the purpose of log books maintained by Power Engineers?
• The heating surface of a boiler consists of all parts that:
• How much force is required to punch a hole 3cm in diameter from an 8cm thick steel plate with a shear stress of 670 GPa?
• Where should a steam trap be installed in a piping system?
• What is the measurement for the heat required to change the temperature of a substance?
• What is part of the approval process for a new industrial facility to lessen long-term environmental impact after plant closure?
• In electrical terms, what does the unit 'kW' stand for?
• In a Plant Line Trace sketch, what is primarily shown?
• What does a vector quantity have?
• What is one advantage of using a refractory (gas) burner?
• Magnetic flux can be defined as:
• If an electrical potential is placed across a conductor, what happens to the electrons?
• What type of refrigeration condenser design requires tubes to be cleaned with acid and then neutralized?
• What should you do first when isolating an electric motor driven pump?
• If the power is cut off to an automatic gas valve, how will the valve respond?
• When applying to write a Power Engineer certificate of competency examination, what must the candidate hold?
• A Van Stone flange is fitted ___________ on a pipe.
• The distribution pipe that injects feedwater inside a boiler is arranged to reduce what?
• What is the electrical power source used for arc welding?
• What is an advantage of a packaged, low-pressure tubular or watertube boiler?
• Which factor is critical in ensuring effective energy management in a workplace?
• Foam fire extinguishers are recommended for which classes of fires?
• What property of a substance does sensible heat affect?
• What force provides the direction of a vector quantity?
• When considering the components in a Process Flow Diagram, which aspect is important to note?
• Which type of valve has the greatest capability to handle slurries and fluids with high suspended solids?
• Which type of fittings are used to ensure proper drainage of water?
• Under what condition are sound levels produced by a plant not usually a problem?
• What is one source of carbon in the atmosphere due to human activity?
• Who may carry out an investigation of an accident involving a power plant?
• Why should hard hats never be painted?
• A pulley with a diameter of 50cm is driven at 960 r/min. What will be the linear speed, in m/s, of a point on the rim of the pulley?
• What is the purpose of tie breakers in a power system?
• What term describes a material's resistance to magnetic flux?
• Which valve type is typically used for quick shut-off applications?
• How is the wall thickness of steel pipe designated?
• PLC's are commonly used for:
• What is a common measurement of speed for a rotating pulley?
• What do the piping service symbols "A", "G", "O" represent?
• In a balanced draft system, how does the size of the forced draft fan compare to the induced draft fan?
• What is the purpose of the service designation marking on valves?
• When blowing off a boiler, what should the operator have an assistant do?
• What type of heat causes a change in temperature without changing the state of a substance?
• If a train starts from rest and reaches a velocity of 100km/h in 8 minutes, how far will it travel?
• What is required to register a boiler or pressure vessel within a provincial jurisdiction?
• An open loop control system requires which of the following?
• In a boiler blowoff system, where is the quick opening valve positioned?
• How often should transformers be inspected?
• A machine lifts a load of 12kN with an applied effort of 4kN. What distance will the load move if the effort moves a distance of 8m and the efficiency of the machine is 70%?
• What is a common use of forged steel in industrial applications?
• What should you say to confirm you understand instructions given over a two-way radio?
• Current flow is:
• What is one of the common forms for power-plant equipment control?
• Which type of standpipe system requires a supplemental detection system?
• The Hartford loop will:
• Which of the following is a common application of a DC generator?
• The main document that must be passed through the jurisdictional parliament is called a/an:
• Where is the continuous blowdown pipe located in a boiler?
• What is the type of heat that causes a change of state?
• Why are stays not normally required in watertube boilers?
• Utility companies have a surcharge to their customers based on what factor?
• Which of the following standards has each jurisdiction in Canada adopted as part of their applicable Act and/or Regulations?
• What should be done to determine the health of a weld visually during operation?
• How does water flow through a modular cast iron boiler system?
• Tubes for high pressure service are usually made with which type of construction?
• Extra low voltages include all voltages below which value?
• A typical application of forged steel in a power plant is?
• How does push nipples function in a heating system?
• When 1 ampere of current flows through a resistance by the application of 1 volt, what will the resistance be?
• Which type of extinguisher is most effective for metallic fires?
• Which section of the ASME codes deals with welding?
• In a three-phase generator, the voltage produced in each phase is displaced by how many electrical degrees from the other phases?
• The furnace walls in a bent-tube watertube boiler are formed by water filled tubes, called:
• What is the maximum operating temperature for a carbon steel valve?
• What is the primary purpose of using hearing protection in a noisy environment?
• What type of metal can be effectively cut with an oxy-acetylene cutting torch?
• What components are used to transfer power to or from the rotor of alternators?
• What must be conducted before a site reclamation can begin?
• What is the minimum number of electrical degrees between the phases in a three-phase system?
• The space or zone around a magnet through which lines of force can be detected is termed?
• What is required for maintenance on portable fire extinguishers?
• What is a disadvantage of a cast iron boiler?
• The main purpose of a welding electrode is to?
• What type of welding does the 'root pass' refer to?
• Which material is commonly associated with high-temperature applications in power plants?
• An unpredicted change in a plant process is known as?
• How is the return oil flow regulated in a modulating pressure atomizer?
• A Process Flow Diagram (PFD) includes:
• What safety equipment is essential in a thermal environment?
• What does the "1" represent in the welding electrode identifier "E6016"?
• Air is predominantly composed of:
• The transfer of heat through the movement of a fluid is called?
• In the water cycle, respiration and transpiration are examples of:
• What is the primary characteristic required for materials used in high-pressure tubing?
• Which of the following is NOT a characteristic of industrial stack emissions?
• Which of the following best describes the purpose of a boiler blowoff system?
• What is a copper alloy that contains tin and sometimes zinc called?
• What is the term for an orifice plate with a round opening that is centered in the middle?
• What should be considered when setting up a safe work environment?
• What term is defined as any action on a body that tends to change its size, shape, or state of motion?
• A fire involving which of the following is classified as a Class "C" fire?
• Section lines of a drawing that show the material of construction are usually drawn at what angle?
• What does a control loop controller do?
• What do industrial stack emissions reflect?
• A sensing element responds to the value of what?
• How is the heat energy requirement of a substance typically calculated?
• What do watt meters measure?
• What is the role of the induced draft fan in a boiler?
• Which welding process can also be referred to as gas welding?
• Fin surface area of a heating or cooling coil is called:
• What is the primary advantage of a steel stack compared to a reinforced concrete stack?
• With respect to NPS 14 pipe and larger, how does the outside diameter behave as the pipe schedule increases?
• What is considered the main component of any computer?
• The Left Hand Rule for Motors is used to determine the direction of what?
• During a welding inspection, an indication has been found to be "acceptable" when compared to a standard. What is the term given to such an acceptable indication?
• What is the primary purpose of a steam separator?
• What does a float-operated level control primarily do?
• Superheated steam is characterized by which of the following?
• What is a common use for a steam trap in industrial systems?
• When both intermittent blowoff valves on a boiler are seatless, which valve should be opened first?
• What controls a thermostatic steam trap?
• What does the term 'dryness fraction' in steam refer to?
• One of the advantages of using natural gas as a fuel in a boiler is:
• What does apparent power refer to in an electrical circuit?
• How are the sections of a cast iron sectional boiler secured together?
• What characterizes current flow in electrical systems?
• What does Schedule 40 correspond to in terms of pipe wall thickness?
• In simple machines, 'velocity ratio' is defined as?
• The three most common views used in drawings are the front, _______________ and _____________ views?
• Which aspect cannot be detected using the visual method while a weld is in progress?
• What is the relationship between the change in length of an object and temperature increase?
• What defines a simple machine?
• In most sizes of pipe, what does Schedule 40 correspond to?
• What is carbon that is not combined with hydrogen called?
• What is a significant feature of the first lines drawn in a sketch?
• What is a common use for a DC generator?
• In a system in equilibrium, what is true about its rotation?
• Liquids must be vaporized when using which of the following methods?
• A Material Safety Data Sheet must be supplied by the:
• What is a key feature of immersion boiler tube bundles?
• What indicates the automatic activation of fire pumps when needed?
• Which component is used in convectors to increase heat transfer?
• What is the purpose of a safety valve in pressure systems?
• If a simple wheel and axle has an efficiency to raise a mass with a certain effort, what efficiency does it show?
• Written communication is most effectively used when:
• Inlet damper control on a fan affects power consumption how?
• What quantity of heat is needed to raise the temperature of 6.3 kg of glass from 6°C to 210°C with a specific heat of 670 J/kg K?
• Which of the following affects the electromotive force developed by a DC generator?
• What is one of the two main purposes of the CSA B-52 code?
• In welding terminology, what does the "E" in "E7015" generally indicate?
• When considering maintenance, what is a significant aspect of workplace safety?
• What typically occurs as a result of a sudden drop in steam pressure?
• Transformers require:
• How is carbon monoxide produced?
• What is the purpose of a nozzle on a pressure vessel shell?
• What defines the location of the continuous blowdown pipe in a boiler?
• Steam is defined as what type of water?
• How can low pressures and vacuums be measured?
• The main purpose of insulation on piping systems is to?
• A pressure gauge on a section IV boiler is graduated to what specifications?
• The stator of an alternator is primarily made of which material?
• Which group recommends updates to the learning materials for Power Engineers?
• What kind of monitoring can enhance safety during reliance on the gauge glass level when operating a boiler?
• In a firetube boiler, beading the tube ends helps to achieve which objective?
• In a bottom-supported boiler, how is the steam drum usually supported?
• What component measures the actual steam flow rate in a boiler system?
• The process of reclamation in industrial facilities primarily aims to address which issue?
• How is acceleration defined in physics?
• Why should hard hats never be painted?
• The two main sources of carbon in the atmosphere are carbon dioxide and which other compound?
• A force of 320kN acts perpendicular to a lever arm, at a distance of 4m from a point. What turning moment does the force produce about the point?
• When there is no method of sending information to the final control element, what type of system is it?
• Neglecting oil changes, filter replacement, and bearing lubrication will eventually require more of what type of maintenance?
• What happens to the gas valve when power fails?
• Vectors that meet at the same point are referred to as what?
• One of the key components of a maintenance management system is:
• Which statement is true regarding the function of a DC generator?
• Which of the following indicates the role of a Supplier concerning Material Safety Data Sheets?
• What is the primary function of a baffle in a steam drum?