TSSA Refrigeration Class 4A Certificate Practice Exam

These questions are part of the practice quiz. Start practicing

• Water expands approximately ________ times when converted to steam.
• The voltage drop across a 20 Ω resistor with 10 A flowing would be _____ V.
• What is a highly effective practice for managing industrial wastewater?
• In the SI system, the standard unit when indicating force is the:
• Which type of evaporator requires the greatest refrigerant charge?
• What is the name of the "Boiler, Pressure Vessel and Pressure Piping Code"?
• A conductor supplied with current in a magnetic field will:
• What type of stress occurs when a material is compressed?
• The ignition temperature of a fuel/air mixture refers to which of the following?
• The purpose of having an upward movement of a switch handle to close the switch is:
• Which type of heating coil circuiting is designed to produce a high heat capacity with limited water supply?
• In the ecosystem, what role do green plants serve?
• An evaporator that contains only a small amount of liquid refrigerant at any time is classified as what type?
• Which function do control valves provide in a piping system?
• What is the most common method for removing sulfur dioxide from flue gas?
• A modulating pressure atomizer regulates its return oil flow using which component?
• Why is carbon dioxide now being measured in flue gases?
• When butt welding pipe, a backing ring is used to:
• Which code regulates mechanical refrigeration?
• Which of the following is NOT an advantage of an electric boiler over other boilers?
• What action must be taken with the black demand pointer of a kilowatt-hour meter?
• What is the primary document that must be passed through the jurisdictional parliament?
• Which surfaces in a firetube boiler are typically not covered in water?
• What are the three types of actions to address facility problems?
• What does "adaptive" action allow a plant to do when a problem has been identified?
• What is the significance of fin spacing in heating coils?
• What holds together the sections of a cast iron sectional boiler?
• What is a common use for a DC generator?
• Which of the following roles is NOT responsible for individual health and safety?
• Which option is NOT an advantage of a packaged firetube boiler?
• The ability of a material to return to its original shape after the force or load that caused the deformation is removed is called:
• Which compounds are primarily responsible for the production of acid rain?
• What constitutes a Class "C" fire?
• In a vertical sectional boiler, how are the sections arranged?
• Which organization ensures that all Power Engineer examinations meet the requirements set by jurisdictional legislative bodies?
• The material designation marking on a valve __________________.
• Before an analog controller can react, digital output signals must be processed by what?
• What is the amount of heat absorbed by water when it evaporates at atmospheric pressure?
• Which aspect is NOT typically covered by the regulations governing Boilers and Pressure Vessels?
• Squirrels are herbivores and are part of the food web. When a squirrel dies, what happens next?
• Which welding process does not rely on an external power source?
• The problem with using brittle metals is that:
• In the First Law of Thermodynamics, heat supplied equals the increase in internal energy plus what?
• What role does a cyclone separator play in a boiler steam drum?
• Submerged arc welding is a(an)_____ welding process.
• The stack temperature of a boiler can rise if:
• Which of the following would be used to reduce the temperature gradient for a slower cooling rate of a weld?
• CO2 is the chemical symbol for:
• What device is used to measure temperature in a boiler system?
• What is the primary purpose of a superheater in a boiler?
• Which component is responsible for circulating refrigerant in a refrigeration system?
• Programmable Logic Controllers (PLCs) are commonly used for which application?
• What type of resistance must an ammeter offer to the circuit?
• What is the saturation temperature of water at 100 kPa?
• What is true about a proportional-only controller?
• What defect is created when the parent metal is grooved during the welding process?
• How often should transformers be inspected?
• Which type of pilot light is commonly used in gas-fired appliances?
• Which scenario represents a physical change in matter?
• Stiffness is defined as the ability of a material to:
• The first pass of a multi-pass weld is known as the:
• Definitions for terms such as "shift engineer" and "chief engineer" may be found in:
• The most common material for power plant piping is:
• A compound wound DC generator has a combination of shunt and which other characteristics?
• What is required for effective mechanical fuel oil atomization?
• How are low pressure steam pipes commonly joined together?
• What type of fire can be extinguished using water?
• What is the purpose of a Hazard Assessment and Identification process?
• When using radiographic inspection, defects such as cracks and porosity show up as:
• Which elements are considered the three major components of an ecosystem?
• Which groups primarily compose committees that establish standards?
• A safe work permit for cold work is intended for which type of work?
• How do dry and flooded evaporators primarily differ?
• Utility companies impose a surcharge based on what factor?
• Which of the following elements is not common in all Acts?
• The steam produced by an electrode type boiler primarily depends on which factor?
• What is the purpose of handhole and manhole openings in boilers?
• Bottom Blow Off valves:
• What is an advantage of the inclined "U" tube manometer compared to a standard "U" tube manometer?
• Which of the following processes is NOT suitable for the construction of boilers?
• Fall protection equipment is generally required for workers at heights over what distance?
• Which type of valve gives good throttling action, takes less actuator force, but does not seal well?
• The output of an immersion type electric boiler is controlled by __________ one or more elements as required.
• What is the main purpose of insulation on piping systems?
• How does a clamp-on ammeter measure current flow?
• Fin spacing of 1.814 to 6.35 mm is most commonly used for what type of coils?
• Which of the following is the worker's responsibility in a health and safety program?
• Which extinguisher is commonly used for a Class "C" fire?
• Which type of computer circuit is responsible for storing and retrieving information?
• A circular chart recorder:
• What is the typical respiratory effect of asbestos exposure?
• Cascade control utilizes:
• What is the typical amount of pre-mix air to an atmospheric burner?
• What is the most common type of standpipe system that is easy to maintain?
• Up to and including DN 300 mm pipe, what does "nominal pipe size" refer to?
• Which of the following is an example of a homogeneous mixture?
• What does a thermocouple consist of?
• Why are boilers designed with multiple combustion gas passes?
• Brass and bronze are alloys of:
• What is the key focus of the National Fire Protection Association Codes?
• Within a specific class of pipe, the outside diameter of heavy-weight pipe is:
• What is the main purpose of the combustion controls on a boiler?
• What code contains rules for the construction of low-pressure hot water supply boilers?
• What is the approximate amount of excess oxygen required for combustion of gaseous fuel?
• What type of heater is classified as cabinet type?
• In order for hydrocarbons to burn, what must be true about the fuel?
• What is the employer's responsibility regarding personal protective equipment?
• What is "toughness"?
• What does the "flash point" of a flammable liquid refer to?
• What is the term for the compressed air used as atomizing air in oil burners?
• One feature of a watertube boiler is that:
• A material's resistance to indentation is included in the mechanical property known as:
• What type of evaporator increases heat exchange by crimping thin metal plates to single-wall tubes?
• What material has a high resistance to corrosion among the options given?
• What feature distinguishes unit heaters from convectors in enhancing heat transfer?
• What is a key factor in preventing leaks from refrigeration units?
• What is the typical function of a safety valve on a pressure reducing valve station?
• Which gasket has an oval cross-section?
• A "U" tube manometer may be filled with:
• Flyash is removed from bag filters by a system of?
• Why is the pressure that acetylene is used at so important?
• During a fire, which gas is typically produced by combusting materials?
• What are tube stubs used for in relation to drums and headers?
• Which of the following is NOT a type of oil burner?
• Why should hard hats never be painted?
• The ability of a body to do work by virtue of its position is the body's ___________ energy.
• Transformers are often cooled by?
• Which factor primarily affects the cooling capacity of a refrigeration system?
• Which process allows fires to endure and renew themselves?
• In what area are Power Engineers expected to show proficiency?
• Which type of pollution is most directly associated with thermal pollution from industrial processes?
• What are "seal" welds used for?
• What does the boiler MAWP determine?
• Transmitters with built-in microprocessors are referred to as what?
• What is the ratio of the load to the effort in a simple machine called?
• What is the appropriate extinguishing medium for a Class "D" fire?
• Which of the following is typically NOT part of a power engineer's job description?
• What aspect of the combustion process is directly linked to the type of fuel used?
• What signals usually prompt fire pumps to start automatically?
• What is a common application of analog converters in control systems?
• In a parallel circuit, what happens to the voltage across each component?
• How do Halon agents extinguish a fire?
• By which process is carbon returned to the atmosphere?
• What are the two general designs of electric boilers?
• What is the main function of a pressure relief valve?
• What is one key advantage of using natural gas as a fuel in a boiler?
• What does a thermocouple measure?
• When should fire sprinkler hydrostatic testing be performed?
• Why is proper draft significant for the plant operator?
• Which gas is commonly used as a shielding gas in MIG welding?
• When float measurement is impractical within a vessel, where is the float typically installed?
• Foam fire extinguishers are primarily used for which classes of fires?
• Medium carbon steel becomes difficult to weld when its carbon content exceeds:
• What type of power supply is necessary for arc welding?
• Soldering and brazing are:
• Orifice plates, venturi tubes and nozzles belong to the group called:
• What is a significant drawback of landfills for liquid waste disposal?
• Where can you find definitions for terms like "shift engineer" and "chief engineer"?
• In a boiler blowoff system, where is the quick opening valve typically located?
• Which material property indicates a material's ability to be stretched without breaking?
• When conducting a weld inspection, "indications" in the weld:
• Materials used for the manufacture of pipes for power plants MUST be:
• What is a common characteristic of Class "C" fires?
• What is the primary advantage of using an inclined "U" tube manometer compared to a standard U-tube manometer?
• What occurs between unlike charges in electricity?
• Which one of the following fusion welding processes is a totally manual process?
• The commutator of a DC machine is usually made of copper bars separated by?
• The ability of a material to retain its deformed shape when the load causing deformation is removed is called:
• What are the four basic components of WHMIS?
• What are short welds made to keep parts aligned while welding called?
• Which factor does not affect the performance of hot water heating and cooling coils?
• What is the function of the windbox in a boiler?
• What is the term for the rate of change of velocity?
• A Van Stone flange is fitted ___________ on a pipe:
• What should be included in daily checks of fire sprinklers?
• Many plants emit sulphur oxides. From where do these originate?
• What is the ratio between the ultimate strength and the allowable stress called?
• Arc welding produces:
• What can generally be said about water after its usage?
• The output from a thermocouple is primarily measured by what type of meter?
• If a welding electrode has the identifying number "E6016", what does the "1" represent?
• What is the primary natural contributor to organic matter in soil?
• An advantage of a vertical tubeless firetube boiler is that it requires:
• A bimetal thermometer consists of which of the following?
• What is the purpose of Regulations in relation to Acts?
• Where should a steam trap be installed in relation to its piping system?
• Putting a controller on manual control implies what action by the operator?
• The basic unit of mechanical or electric power is the?
• Before performing a task, what should a Power Engineer primarily consider?
• The Bourdon tube is often shaped in the form of a "C", having an arc span of about:
• On a boiler blowoff system, a valve requiring five 360° turns to close is known as what?
• What is the role of the fan in a forced draft system?
• In a "closed loop" control system, how is the control behavior characterized?
• What is the primary reason for controlling the temperature in welding?
• What type of workers were typically hired in the early days of power plants?
• What is the pressure range for pressure-atomizing burners fired with light fuel oil?
• What is carbon that is not combined with hydrogen referred to as?
• The quickest method of weld inspection is _________ inspection.
• A diaphragm type pressure gauge:
• What type of individuals primarily compose committees that establish standards?
• What role does soil play concerning groundwater?
• A sensing element sends its signal to which of the following components?
• How does a grease trap operate effectively?
• What is the primary role of a fuse in an electrical circuit?
• If a welding electrode has the following identifying number "E7015", what does the "70" represent?
• Which statement about coil surfaces is incorrect?
• As per ASME section I and section IV, a steam boiler operating at a pressure of ______ or higher is considered a Power Boiler.
• What does SOPEEC stand for in the context of power engineering?
• The boiler blowoff valves are opened and closed in a specific sequence to:
• What is the purpose of a refrigeration evaporator?
• If a few turns of wire are wrapped around a core of soft iron and a current is passed through the wire, what is created?
• What is the role of power engineers?
• Which welding method primarily uses a consumable electrode?
• What is a material that transfers electric charge called?
• The term "drum" in boiler terminology refers to which pressure container?
• What does the term "interpass temperature" refer to in welding?
• At what event must the low water fuel cut-off of a heating boiler shut the fuel off?
• Which characteristic is true for immersion boiler tube bundles?
• The major difference between an AC and a DC generator is that a DC generator has:
• What is the primary use of plastic foam pipe insulation?
• What must a candidate hold to apply for a Power Engineer certificate of competency examination?
• How can a Power Engineer minimize the environmental impact of their facility?
• In which situation is supplemental fire detection equipment necessary?
• The inside diameter of a pipe is expressed as the:
• An advantage of having an alternator with a rotating field is that the rotating mass is:
• An air atomizing burner utilizes an air pressure of approximately:
• What is the role of the Authorized Inspector in relation to the Act?
• A tube expander is used to:
• When do heating boilers achieve maximum efficiency?
• The cycling of matter necessary for life is referred to as what cycle?
• The power requirements for the FD fan of a fluidized bed boiler are ______ times _______ than other boiler designs?
• The yoke that supports the main components of the DC machine is frequently made of:
• Which code contains rules for the construction of low-pressure hot water supply boilers?
• Which organization establishes standards for stack emission detection techniques?
• What regulation lists the requirements for anyone wishing to write an applicable jurisdictional examination?
• On a steam boiler with single element feed water control, what is the measure variable?
• What does the term CSA stand for in Power Engineering?
• What happens to current flow as applied voltage increases?
• Nitrous oxides and CFC's both have a damaging effect on:
• To burn coal in a fluidized bed boiler, the inert bed material must be heated to about how many degrees Celsius?
• What is the primary function of a gas burner?
• A basic electric control circuit has how many major pieces?
• To register a boiler, pressure vessel, a pressure piping system, or a boiler fitting, within one of the provincial jurisdictions, what is required?
• What is one of the primary purposes of an environmental impact assessment?
• How should gas cylinders be stored for safety?
• What is a key advantage of a helix-shaped Bourdon tube compared to a standard one?
• How do centrifugal collectors primarily remove particulates from flue gas?
• Which group recommends updates to Power Engineer learning materials?
• What does the right hand rule for generators help to determine?
• In a magnetic field with supplied current, the conductor's movement will generally occur in relation to:
• To extend the life of valve packing, what should be done?
• What is required in order to progress to a higher certificate in the power engineering field?
• When Radiographic Testing is performed, what is required regarding the testing area?
• What is the classification of a Certificate of Competency holder who may act as an engineer?
• Besides a flashlight, which tool is commonly used during a visual inspection of a weld?
• Ultrasonic inspection involves:
• Which of the following statements about the shell and tube refrigeration evaporator is false?
• A Class "A" fire typically involves which of the following materials?
• What code regulates power boilers used in locomotive service?
• What national standard has been adopted by each jurisdiction in Canada as part of their applicable Act and/or Regulations?
• Where are electrons located in an atom?
• What type of device is designed to start and stop current flow?
• Confined space entry procedures are necessary when there is a lack of what?
• What is the correct designation for the "Boiler, Pressure Vessel and Pressure Piping Code"?
• A dry chemical extinguisher is most appropriate for which class of fire?
• What is the main purpose of the pressure relief valves on gas cylinders?
• What do animals primarily use to convert biomass into energy?
• Work is defined as:
• To start a body moving, which of the following must be overcome?
• Current flow is directly affected by:
• Which extinguishers are typically used to combat a Class "C" fire?
• Which of the following is often not included in common characteristics of all Acts?
• What is defined as any action on a body that tends to change its size, shape, or state of motion?
• Which material is commonly used for water and instrument air piping in power plants?
• What is a benefit of independent boiler feedwater controls?
• What is the converted temperature in Fahrenheit for -6°C?
• What is the purpose of boiler manholes?
• Which burner design is NOT typically used for burning oil?
• The Haycock boiler was:
• A vector quantity has:
• What is the main characteristic of an element in chemistry?
• Which document serves as the primary reference for pressure equipment regulation?
• During an injury-related investigation, when may work be suspended at the site?
• When using a basic differential pressure transmitter for flow measurement, what varies with the flow?
• What is steam containing water particles in suspension known as?
• What does the small motor in a kilowatt-hour meter do?
• How are shot cleaning pellets transported to the top of the boiler?
• Which group recommends updates to the learning materials and criteria necessary for a Power Engineer's Certificate of Competency?
• Which factor does NOT influence the sound levels considered acceptable in industrial settings?
• What is the main advantage of a smart transmitter compared to a standard transmitter?
• What can cause black smoke during combustion in a boiler furnace?
• What was the term for the masonry work surrounding the furnace in older boilers?
• Which of the following devices cannot permanently store data?
• Modular PLCs can be expanded by adding:
• The three general types of flange connections are the screwed, the Van Stone and the _____ .
• With regards to greenhouse gases, which of the following is the most powerful?
• Under which condition is a structure most likely to fail?
• The material used in foam extinguishers is effective against which types of fires?
• Which of the following describes a function of a thermocouple?
• What is the primary purpose of the Boiler and Pressure Vessel Code?
• Static friction is:
• In a basic electric control system, an example of a controlled device is a:
• An interrupted pilot of an automatic boiler does what?
• Which section of the ASME codes deals with welding?
• According to the definition, what describes a "confined space"?
• Velocity is a/an ___________ quantity.
• What is typically included in jurisdictional Acts?
• What is the main advantage of using flux-cored arc welding?
• What is a characteristic of wrought iron?
• If plant liquids negatively impact the ecosystem, how are they categorized?
• What are the main component metals of "white metal"?
• What are the two main categories of manufactured steel piping?
• What is a common symptom of water treatment issues in boilers?
• Rippled-finned surface type heating or cooling coils primarily increase heat transfer efficiency through:
• If a fuel-air mixture is below the lower flammable limit, what is the mixture described as?
• The earth's water cycle is referred to as the:
• The weld inspection method that utilizes penetrameters is called what type of inspection?
• To effectively reduce sulphur oxides in flue gas, which method is most appropriate?
• Which ASME code contains Recommended Guidelines For The Care of Power Boilers?
• In an electrostatic precipitator, what charge does the discharge electrode have?
• Where are operational system checks (rounds) required to be recorded?
• All pipe weights with the same nominal pipe size have the same:
• What is a function of the joint health and safety committee?
• Which type of fire extinguisher is not typically used for electrical fires?
• Which of the following is NOT a common type of refrigeration condenser?
• When chromium is added to alloy steel, it:
• Which process refers to an absorbed or released heat during a phase change?
• What term describes a material's ability to resist penetration?
• How can a Class "B" fire be most effectively extinguished?
• Where should maintenance on portable fire extinguishers be performed?
• What material is commonly used in modern furnaces to form the furnace walls compared to early watertube boilers?
• Which strategy is ineffective for reducing potentially damaging sound pressure levels for plant personnel?
• What type of systems utilize signals to adjust operations without human intervention?
• Aqueous film forming foam agents extinguish a fire by which method?
• Welding defects can be categorized into which of the following types?
• The state of matter of a particular substance is dependent on what factors?
• What is one method to increase natural draft?
• It is much easier to have changes made to a _____ than it is to have changes made to an Act.
• What is the primary benefit of using an electrically heated boiler?
• Why must the steam space of a boiler be sufficiently large?
• Which device is used to convert alternating current (AC) to direct current (DC)?
• In a balanced draft system, the forced draft fan is typically:
• What type of electrical connection is typically used for high-load circuits?
• The low water fuel cutoff is a device fitted to the boiler to shut the:
• Which statement about auto-transformers is correct?
• What is the main purpose of a blowoff tank in a boiler system?
• What are the two types of Penetrant Testing?
• Which of the following variables is critical in pneumatic control systems?
• What happens to current in a series circuit?
• The purpose of a steam separator is to remove what from the steam?
• Which element in air is crucial for the combustion process?
• An immersion electric boiler can have a capacity as high as how many kW?
• What is the significance of the term "Global Warming Potential"?
• What type of current flow is described as flowing from positive to negative?
• Which factor most directly affects the risk of electrical fires?
• The equivalent resistance of three resistances of 10, 25, and 50 ? connected in parallel is _____ ?
• What is the purpose of the distribution pipe that injects feedwater inside a boiler?
• What is required as part of the approval process for a new industrial facility to mitigate long term environmental impacts?
• Class 1 water treatment, as per ASME section VI, is suitable for which type of boilers?
• From which charge do electrons flow?
• What is a benefit of a double-welded joint?
• What is the primary purpose of flux in welding?
• Synchronous motors have construction that is identical to:
• An element that increases creep strength in metal is:
• For a pneumatic control system, it is imperative that:
• Which component is crucial for steam generation in a boiler?
• What is a recommended course for workers encountering H2S gas?
• What primary qualification must a power engineer meet before obtaining a Certificate of Competency?
• Which age group reports the highest proportion of workplace injuries?
• When carrying out a Radiographic Test on a weld, what is put on the opposite side to record the test?
• Why are stays not normally required in watertube boilers?
• If a system of forces is in equilibrium, which of the following statements is true?
• In which component is combustion air for burners preheated by hot flue gases?
• The force of friction is:
• Heating plants with multiple boilers may have what type of feedwater control system?
• How should oxygen and acetylene cylinders be stored to prevent explosive mixtures?
• What is another name for a unit ventilator?
• Who may carry out an investigation of an accident involving a power plant?
• What action does a two-position controller perform when comparing conditions to a set point?
• One disadvantage of using threaded connections to join pipes and fittings is that it:
• Where are clear definitions for refrigeration and air conditioning equipment terms found?
• When working with high voltages, the following precautions should be observed:
• What is the purpose of the firing rate control valve in a modulating burner?
• What is a consequence of soot and ash on fireside tubes?
• What may be the result of igniting a greater than normal amount of combustible mixture?
• A _________ should be installed just ahead of a steam trap.
• What must employers avoid shortcuts on?
• What is the main purpose of a refrigeration condenser?
• Which analog signal input is accepted by a PLC?
• Which of the following statements about steam distributing heating coils is true?
• Which of the following forces is typically considered in structural engineering?
• Under what condition is sound produced by a plant generally considered acceptable?
• Which type of oil burner operates without external air pressure?
• The rotating field of an alternator is produced by applying what type of power to the rotor?
• What must a qualified pressure welder do before welding on a pressure vessel?
• What is one of the main purposes of the CSA B-52 code?
• Daruing the rehabilitation of an injured worker, a supervisor should do what?
• Where are stationary soot blowers typically installed?
• In a process control system, what role does a controller perform?
• Which system can PLCs not be customized for?
• What defines the position of a valve actuator?
• The advantage of using a venturi tube, rather than an orifice plate for flow measurement is it:
• An advantage of expansion bends is that they are __________ than expansion joints.
• Permanent magnets are typically used in which application?
• What is the main factor that determines ash production during combustion?
• What determines the classification of the certificate of competency required for the role of chief power engineer?
• The calculation of (mv²)/2 represents what type of energy?
• What effect does increasing the DC power supply have on the field strength of an alternator?
• Which statement about double tube refrigeration condensers is true?
• A mechanical atomizing burner has oil pumped under high pressure through which component?
• A sensible heat measurement refers to which of the following?
• What type of heat is found in Column 8 (labeled Hf) of the Steam Tables?
• What is the primary purpose of using preheat in welding?
• In the Steam Tables, which calculation corresponds to total enthalpy?
• Which of the following best describes the work schedule common for power engineers?
• What document outlines the qualifications for repair and supervisory personnel?
• What characteristic defines a proportional controller?
• Which code is referred to as the "Mechanical Refrigeration Code"?
• Why do asbestos fibers pose health risks?
• Which group meets annually to discuss relevant situations for Power Engineers?
• A packaged watertube boiler having two mud drums is the:
• As the wall thickness of a pipe increases, what happens to the inside diameter?
• What is the latent heat of evaporation indicated in the Steam Tables?
• Cast iron boiler capacity:
• What type of pipe is typically used for high-pressure steam systems?
• The biggest advantage of an outside screw and yoke, rising stem valve over other designs is that it is_________.
• A weld inspector uses ultraviolet light when performing _________ inspection.
• Fail-closed solenoid operated valves open when:
• What property makes stainless steel notable?
• Contributions to the ecosystem by the environment are in the form of?
• A bellows corrugated expansion joint is suitable for pressures up to approximately how many kPa?
• When identifying a valve for rejection, what factor should be considered first?
• Which of the following is not a common use for steam?
• What term is used to refer to the provinces and territories of Canada in this context?
• A flowing liquid has kinetic energy as a function of its velocity. When its velocity increases:
• Sulphur oxides are undesirable in flue gas because they:
• What is the main purpose of a reclamation plan in industrial practices?
• What is the required steam pressure for mechanical fuel oil atomization?
• What code contains guidelines for the care and operation of heating boilers?
• The change of position (in meters) per unit time is:
• According to the CSA B-51 code, why is a blowoff tank necessary?
• Which of the following is essential for proper air quality management in a facility?
• Which component is specifically used for measuring temperature in pneumatic systems?
• What type of actuator configuration is defined by keeping one side of the diaphragm open to atmosphere?
• Which of the following is NOT considered a pilot for a gas burner?
• How are ultrasonic vibrations converted to electrical pulses during an Ultrasonic Test?
• Radiators were traditionally made of which material?
• In addition to analog, digital, mechanical, and pneumatic, which form is commonly used for power-plant equipment control?
• In an electric control circuit, the sensing unit may also be the:
• What is the term for the process of expanding tubes into a tube sheet?
• When isolating an electric motor driven pump, what should you do first?
• What is the primary function of a valve seat?
• A control valve that has one plug that moves upward to close the port is referred to as what?
• The measure of electrical resistance in ohms is indicated by which symbol?
• What component is used by convectors to enhance heat transfer?
• Mineral and organic matter is the basic component of?
• Where is boiler water with the highest dissolved solids concentration found?
• What type of regulations are pursuant to the enforcement of an Act?
• What is water formed from the condensing of steam called?
• According to the Second Law of Thermodynamics, what must be supplied to transfer heat from a colder substance to a hotter substance?
• When operating seatless intermittent blowoff valves on a boiler, which valve should be opened first?
• What type of metal can be cut with an oxy-acetylene cutting torch?
• Welding together pipes that are 2 inch nominal size or smaller is usually done using:
• What safety measure is crucial when handling gas cylinders?
• Which of the following can be classified as a reducing agent or fuel?
• Pipe nipples are _____ on both ends.
• How are ammeters connected in an electrical circuit?
• What is the mass of a 2 m length of Schedule 40 pipe with an outside diameter of 101.6 mm?
• What is a major disadvantage of a floor-standing pump extinguisher compared to a backpack extinguisher?
• A special PLC that allows minimal programming may be used for:
• The Ultrasonic form of non-destructive examination is done to find?
• The process whereby plants consume carbon dioxide, water, and the sun's energy to make food is known as?
• According to the Second Law of Thermodynamics, heat flows from a:
• What does proper groove selection and preparation allow when welding thick materials?
• In an automatic control loop, which component follows the transmitter in the sequence?
• In managing maintenance, what is a task that cannot be performed solely by a computer?
• What is a frequent cause of serious accidents with valves?
• When magnetic flux produced by one coil induces an EMF in a second coil, what is this phenomenon called?
• How often should fire pump testing be completed?
• What causes natural draft in a boiler furnace?
• The bypass around a regulating valve should contain a ___________ valve.
• Power engineers typically work which type of shifts?
• A decommissioned plant:
• What voltage is required to supply a 12 kW motor drawing 24 A?
• In welding, what does the term "spatter" refer to?
• What is the term for the fin surface area of a heating or cooling coil?
• When a boiler equipped with a combination feedwater control and low water cutoff device shuts down due to a low water condition:
• What is a key advantage of using a steel stack over a reinforced concrete stack?
• What is the connection provided on DC motors that supplies the armature with power via brushes?
• Which of the following statements about inclined planes is FALSE?
• What is the value of the current flow in an electric circuit where the voltage is 12 V and the resistance is 3 ohms?
• Which type of control does a proportional-only controller NOT employ?
• What should be done with valves that are not clearly identified?
• Pneumatic signals operate between:
• What electrical classification applies to an area with dust concentrations that could produce ignitable mixtures?
• Fire pump testing is outlined in which standard?
• Which valve components require regular inspection as crucial parts?
• The apparatus which converts current signals to pneumatic and pneumatic to current signals is called a:
• Which of the following is an example of a homogeneous mixture of solids?
• What is an alternating current generator typically equipped with that differs from a direct current generator?
• What do thermocouples require for their operation?
• What is a common fuel type for copper tube tubular heating boilers?
• Who is responsible for supplying a Material Safety Data Sheet?
• What is the primary use of a refrigerant in a refrigeration cycle?
• In the process of making iron, limestone is added to:
• Compared to Penetrant Testing, what is a requirement for Radiographic testing?
• If the downward force between surfaces is doubled, what happens to static friction?
• Why is Carbon Dioxide effective for fighting electrical fires?
• What is necessary for an analog signal to be processed effectively?
• What type of transformers are current transformers classified as?
• The water flow through a modular cast iron boiler system:
• What is a possible financial strategy to lessen the cost of reclaiming a work site?
• Which valve type requires specific and routine lubrication?
• White cast iron has a high resistance to corrosion and abrasion, making it useful for:
• Internal furnaces are:
• What is impact strength also known as?
• What type of material can be effectively tested using ultrasonic testing?
• What defines an open circuit?
• When a number of electrons pass a given point over a specific time period, the energy may be referred to as:
• Which of the following is true about pressure controllers?
• The purpose of a steam trap is to:
• What should an operator have while blowing off a boiler?
• What type of fires involve combustible and flammable materials like paper and wood?
• In refrigeration systems, flooded evaporators are known for?
• What is essential during the blowoff process of a steam boiler?
• Which of the following is an advantage of electrical control systems?
• What is the maximum operating voltage for a jet-type electrode boiler?
• What is the purpose of a nozzle on a pressure vessel shell?
• What is the most common measurement made with an electrical meter?
• What is the unit of measure for work in the SI system?
• The Bourdon tube can be used with a bulb and capillary tube to measure:
• Which feature is characteristic of carbon dioxide fire extinguishers?
• What is a primary advantage of using copper tubing in a tubular boiler?
• What is the best approach to manage solid waste in an environmentally friendly way?
• Top guard rings are primarily used on gas cylinders instead of which component?
• What does the acronym WHMIS stand for?
• When is a visual inspection done on a weld?
• Increasing the spring tension in a pressure regulating valve will __________________.
• Shunt wound DC motors are used where speed must remain constant regardless of load, such as on:
• How is a uniformly applied force, acting at right angles to a surface, defined?
• What is the purpose of a bimetal thermometer?
• What is at risk if unqualified individuals operate a power plant or pressure plant?
• Inclusions are defined as:
• Where are the coils or windings located on a DC machine armature?
• To prevent the possibility of a furnace explosion, it is important that the furnace is _____ before the igniter is energized and fuel is supplied to the burner nozzle(s).
• Why are gaskets installed between pipe flanges?
• A substance that cannot be broken down by chemical means is known as what?
• What characteristic does a tapered plug valve have?
• What efficiency can fabric filters achieve in a plant?
• Control motors are classified primarily into which two categories?
• To transfer power to or from the rotor of alternators, ____________ are used?
• Modern radiators are usually made of which material?
• In a piping system, what function does the valve stem serve?
• If a material provides resistance to magnetic flux, it is demonstrating:
• What is the main purpose of thermometers on the inlet and outlet piping of a valve station?
• What type of environmental hazard does Class 1 designation refer to?
• The maximum voltage generated by a single loop DC generator occurs when the conductor is cutting the magnetic lines of force at an angle of:
• Which safety device is unnecessary for an electrode boiler where the electrodes are submerged in water?
• In piping systems, the three main types of flange gaskets are the full face, the ring joint, and the:
• When the temperature of an object is increased, its change in length is proportional to which of the following?
• Which option is used to connect pipes of the same diameter, creating a straight run of pipe?
• What is the internal resistance to an applied external force?
• Beading the tube ends in a firetube boiler:
• How is the capacity of a body to do work defined?
• Stack emission detection techniques must meet standards of this organization.
• What is a disadvantage of using a cast iron boiler?
• What is considered the basic food source for all organisms?
• In the Steam Tables, what unit is used for pressure?
• Which of the following components is critical for the operation of a watertube boiler?
• Which component is not included in the four basic components of WHMIS?
• Which national legislative item has been adopted by each jurisdiction in Canada as part of their applicable regulations?
• Each pass in a multi-pass weld must:
• Which of the following is NOT considered a confined space?
• A shunt type DC generator produces _____ voltage?
• If a series circuit consists of resistances of 20, 50, and 80 ohms, what would be the current flowing with a supply voltage of 400 V?
• Which device is used to measure voltage in a circuit?
• What is the required method for disposing of a caustic boiler cleaning liquid?
• Which of the following components is essential for fire safety within a boiler operation?
• Which property characterizes the behavior of a direct acting valve?
• Why is a steam boiler blown off intermittently?
• In an atom, what attracts the electrons?
• What are the most commonly used types of water coil circuiting?
• What advantage does oxy-fuel welding offer?
• The main function of the mud drum in a boiler is to:
• Which pilot is most often used on small boilers?
• In most sizes of pipe, Schedule 40 corresponds to which type of wall thickness?
• What is a welder performance qualification test?
• If three resistors of 20, 60, and 120 ohms are connected in parallel with a current flow of 60 A, what will the applied voltage be?
• Which code contains rules for the construction of power boilers?
• What do you call a material made up of distinct elements, compounds, or both, that are not chemically combined?
• In Penetrant Testing, what does the term "dwell time" refer to?
• Which material is commonly used for valve packing?
• One advantage of the low-pressure flexible watertube boiler is that:
• One or more steel plates rolled into a cylinder welded together with the ends closed by rounded heads is called a:
• The maximum operating temperature for a carbon steel valve is _________ °C:
• What type of change occurs when a substance undergoes a transformation resulting in a new composition?
• If engineers require a material that can be stretched and reduced in cross-section without breaking, they would choose a material that is:
• What is a characteristic of a long retractable soot blower?
• What is a primary application of flyash collected by pollution control devices?
• A slip type expansion joint:
• In which context is acid rain specifically a concern?
• Which of the following emissions is NOT considered a gaseous pollutant?
• A typical application of forged steel in a power plant is:
• Which of the following is NOT a use for steam?
• Which of the following metals is primarily used in structures due to its high strength-to-weight ratio?
• What mechanical property is determined by a Brinnell test?
• What does "ash" refer to in the context of combustion?
• What is the nature of an open circuit concerning the flow of electricity?
• When admitting steam to a steam piping system, it is imperative to:
• What is commonly a sign of a strong weld?
• What is a common condition that can lead to electrical fires in buildings?
• What is a common feature of logic systems in control mechanisms?
• What can be a consequence of using higher boiler pressures due to unqualified operators?
• What is the primary source of groundwater?
• What is the primary function of shielding gas in welding?
• What are the two types of designs for expansion joints?
• A device used to control flow by varying the opening is a:
• A valve body that seals on the down stroke is categorized as?
• Which two types of modern coils are used for heating and cooling in air handling systems?
• What safety precaution should be taken when using hazardous materials?
• Which classes of fires are foam extinguishers specifically recommended for?
• In a pneumatic control system, the nozzle typically receives a regulated air supply pressure of approximately:
• Thick welds are:
• What can defects in a weld also be called?
• Which of the following is an advantage of cast iron boilers?
• When tightening the bolts on a pipe flange, what is the correct method?
• Which Non-Destructive Examination method uses gamma rays?
• The "Pressure Vessels" section of the B-51 code identifies pressure vessels and their installation. What does this section also show?
• Where is the continuous blowdown pipe located in a boiler?
• In a two-element feed water control system, what does it compensate for?
• How can condensation losses in steam be avoided?
• The valve that is least susceptible to wire drawing and seat erosion is the _________ valve.
• An analog control loop output must be processed through what before the computer can react to the signal?
• What type of fittings are designed to ensure proper drainage of water?
• The space or zone around a magnet through which lines of force can be detected is termed?
• Who is responsible for health and safety in the workplace?
• Burning metals can be extinguished using which type of extinguisher?
• The amount of current passed through the water of an electrode boiler depends on the:
• What must be clearly stated regarding the responsibilities of plant personnel during inspections?
• What is the rate of doing work called?
• What does a circuit breaker do?
• What is a method used to prevent flue gas leakage in a packaged watertube boiler?
• Integral and Derivative functions are used to:
• Which type of construction is commonly used for tubes in high pressure service?
• What is the main advantage of using a magnifying glass during weld inspection?
• If one end of a "U" tube is connected to the discharge of a forced draft fan, what happens to the liquid levels?
• What is primarily responsible for creating a magnetic field around a conductor carrying current?
• What type of heating element typically uses copper or brass tubes for heat transfer?
• Pressure controllers are categorized into two main classes based on what criterion?
• What are automatic systems that can make decisions referred to as?
• What is one of the fundamental requirements for sprinkler system maintenance?
• Which code regulates mechanical refrigeration?
• Decibels are represented by a/an ____________ scale:
• Which type of boiler uses a circulating fluid bed for combustion?
• What is typically used to monitor boiler water quality?
• What is the purpose of the non-return valve on a boiler?
• The complete combustion of carbon is represented by the balanced equation C + O2 = ?
• What does a check valve do?
• What is a benefit of corrugated furnaces in boilers?
• What occurs when current flows in a conductor?
• What is the impact of increased wall thickness on the structural integrity of pipes?
• What should the receiver of a safety work permit do?
• The balanced equation for the complete combustion of hydrogen is:
• To ensure proper air venting from a heating or cooling coil, which connection should be at the bottom of the coil?
• What should a pressure reducing valve station have to ensure safe and continuous operation?
• What should happen during the combustion of fuel in a boiler furnace?
• A characteristic that made early boilers very inefficient was:
• Improper drainage of steam lines could cause:
• What is a characteristic of a mechanical steam trap?
• Which type of burner is typically used for high pressure oil combustion?
• Which device converts a visible light signal into an instrument analog signal?
• The face velocity of a heating or cooling coil is best defined as what?
• Which component is NOT part of "valve trim"?
• In an automatic control system, the controller output signal is directed to which component?
• What is a primary consideration in constructing radiators for steam heating systems?
• What is one effective method for reducing NOx emissions in a plant?
• What is a significant contributor to thermal pollution in a power plant?
• Inlet damper control on a fan is characterized by which of the following?
• External tensile forces acting parallel but not in line produce _________ in an object.
• What term refers to the secondary rules applicable for enforcing the Act?
• Which of the following is required for synchronizing alternators?
• In a bottom-supported boiler, how is the steam drum typically supported?
• Chemicals are introduced into the boiler:
• What effect does increasing the resistance have on the current in a circuit for a constant voltage?
• Steam is defined as?
• Which pressure measurement device is used to determine a fluid's pressure drop across a system component?
• Which item provides easy assembly and dismantling of screwed piping connections?
• Which type of waste is effectively processed by anaerobic digestion?
• Run time totals, recorded by a computer, are commonly used for what purpose?
• What is one advantage of the refractory (gas) burner?
• Of the following, which is NOT an advantage of the visual method of non-destructive testing?
• In an early shell-type boiler, what part served as its heating surface?
• How can carbon transfer into rock formations occur?
• Aside from carbon dioxide, what is another significant source of carbon in the atmosphere?
• An open loop control system requires:
• When should a soot blower be retracted during operation?
• When talking about welding, what is the "parent metal"?
• Coplanar vectors all occur in the same:
• Which copper alloy is characterized by the inclusion of tin and sometimes zinc?
• A good rule of thumb is to install pipe hangers at ___________ intervals along a pipe.
• What substance is no longer permissible to add to transformer oil due to environmental concerns?
• What is the primary role of power engineers?
• Which type of standpipe system requires a supplemental detection system?
• What is the first step in eliminating hazards in an energy plant?
• What is the maximum pressure and temperature for cast iron boiler construction?
• A single vector that can replace a system of vectors and have the same effect is called a:
• Why are brushes made from carbon in brush gear for DC machines?
• What is the purpose of the valve cap on a gas cylinder?
• What is the primary capability of the "penetrant testing" method in non-destructive examination?
• What term encompasses spills, seepages, and leaks?
• What is a common consequence of not adhering to sound guidelines in an industrial setting?
• Who is primarily responsible for ensuring the maintenance of personal protective equipment?
• Which regulation specifically outlines duties and responsibilities of power engineers?
• The field strength of an alternator can be adjusted by varying what?
• What defines the advantage of a modular boiler system?
• Which material is highly preferred for its resilience against high temperatures in piping?
• What type of furnace is surrounded by brickwork rather than by water?
• Steam traps may also remove _______ from steam lines.
• How can the total equivalent resistance of three resistances in a series circuit be expressed?
• When a process controller is located a distance from the sensing element, what does the sensing element send its signal to?
• What type of joint preparation is often used for thicker materials in welding?
• What does NFPA 25 primarily cover?
• Whether or not solid waste can be re-used or not depends on?
• What type of heat causes temperature changes without altering the state of a substance?
• What is the primary function of aqueous film forming foam agents?
• What is an important characteristic of eccentric fittings in plumbing?
• In what situation is a low water cutoff device critically important?
• A retractable steam soot blower is cooled by which medium when operating?
• What classification is assigned to electrical equipment in an area with hazardous concentrations of flammable gases or vapours?
• The unit of measure for electrical current flow is?
• The purpose of a combustion chamber in a boiler is to:
• Which of the following refers to the three reservoirs of the carbon cycle?
• Which type of heater is classified as baseboard?
• Who typically oversees the operating standards in a power plant?
• The rate of change of velocity is called:
• What is a triple pole single throw switch designed to do?
• What is the electrical designation for an area where easily ignited material fibers are handled?
• Thermoclines in large bodies of water are characterized by what?
• How does radiant heat travel?
• What effect does limestone have when added to a fluidized bed boiler?
• The following fusion welding process utilizes a flame.
• Cooling ponds and towers are used to:
• What is generally easier to amend, a regulation or an act?
• When controller output is proportional to the amount of deviation, the controller is:
• The output voltage of a shunt DC generator is varied by adjusting the:
• In a low-pressure serpentine watertube boiler, the tubes are attached by either _______ or by using ferrules.
• The greatest load that can be applied to a material under its design conditions is called the:
• Which valve design has the greatest capability to handle slurries and fluids with high suspended solids?