Custodian Engineer Book Practice Test

These questions are part of the practice quiz. Start practicing

• What does a dark orange flame in a boiler typically indicate?
• What are nematodes commonly known as?
• When water freezes at 32°F, how much heat is lost per pound of water?
• Which polishing agent is best for wood furniture?
• When should chemicals be added to a heating boiler?
• What happens when a room exceeds the upper temperature setting of a thermostat controlling a check damper?
• Why is it important to inspect portable fire extinguishers regularly?
• What happens when a boiler setting leaks air?
• Which of the following is a sign of a potential problem with a float-operated boiler supply valve?
• Which of the following improves the efficiency of heat radiated from a radiator?
• What is the main purpose of a blowdown in boiler operation?
• Fusible plugs used as protective devices in HRT boilers producing low-pressure steam should melt at what temperatures?
• What is the key benefit of using a boiler water softening agent?
• In safety systems, what role does the fusible plug play?
• A pop safety valve is commonly categorized as a...
• What is a common use of paste wax on wood furniture?
• What defines a wet return line in a boiler system?
• A burner mounted vaporstat is primarily used in conjunction with which type of air?
• What is the main benefit of using peat moss in soil?
• What is the primary reason for keeping the steam valve supplying unit radiators open?
• Which CO2 reading indicates the lowest excess in flue gas?
• Which device is typically installed on a double action piston pump to reduce pulsation in the discharge of water?
• What is a good over the fire draft measurement in a natural draft furnace?
• What is the primary function of a Bibb reseater?
• How much heat is lost per pound of water when it freezes at 32°F?
• What method is recommended for detecting a leak in a gas line?
• In what terms is the capacity of a heating boiler usually expressed?
• In common practice, how many BTUs is equivalent to one ton of refrigeration?
• What component regulates the flow of oil in an automatic rotary cup oil burner?
• The primary purpose of an interlock system on electronic equipment is to?
• When should the fuel oil suction strainer outside the oil storage tanks be cleaned?
• Radiators radiate more heat when painted with what type of paint?
• What is the primary purpose of recirculating fuel oil in an oil burning system?
• What defines a template in engineering terms?
• Gas consumption is typically measured in which unit?
• What is the primary effect of soot accumulation in a boiler?
• What do fire tubes in an HRT boiler contain?
• What type of trees lose their leaves in the fall?
• How is the admission of steam to the coils of a domestic hot water supply tank regulated?
• What occurs when priming takes place in a boiler?
• What is the recommended nail length for holding a piece of lumber in place?
• What happens to the suction lift of a pump when the water temperature increases from 150°F to 200°F?
• Why should ventilating systems for toilets be separate from the building's main ventilating system?
• What is the primary purpose of secondary air dampers in a boiler with a rotary cup oil burner?
• Which of the following is commonly used for disinfecting swimming pools?
• How can a custodian engineer best evaluate the work done by custodial personnel?
• What is the chief purpose of a plumbing system trap?
• What is primarily used to create the atomization in a rotary cup oil burner?
• What is the common use of Calcium Hypochlorite?
• What causes water hammer in water lines?
• What term describes plants that bloom year after year without reseeding?
• What is the primary function of a sump pump?
• What is the relationship between the flash point of oil and safety handling?
• How often should elevator safeties under the DAR be tested?
• What is a key characteristic of oil at its flash point?
• What is one benefit of periodic inspections of building cleanliness?
• What is the primary function of the packing in the stuffing box of a centrifugal pump?
• How can the efficiency of a burner be optimized?
• A plenum chamber is often referred to as a?
• When taking a steam boiler out of service for an extended period, what should be done to the boiler drums?
• A device used to measure relative humidity is known as?
• Which component is essential for controlling high-powered electric water heaters?
• What reduces the corrosion risk in the re-circulation of water to boilers via condensate return pumps?
• What happens to deciduous trees in the fall?
• Before starting up the boiler each morning, what should the custodian or fireman verify?
• What happens to safety if the steam valve to a univent is closed?
• A badly soothed HRT boiler under coal firing will typically show a ________ compared to a clean boiler.
• What is the primary function of a Pressutrol in a boiler system?
• How often should standpipe fire hoses be inspected?
• What is the result of putting too much water in a boiler?
• What additional component is required for an electric hot water heater controlled by an aquastat?
• What is the minimum diameter for gas range piping?
• In what unit are standards for type F fuses generally rated?
• Under optimal combustion conditions, the stack haze, as indicated on the ringel chart scale, is marked as number...
• What could indicate increased consumption in a boiler due to fouling?
• When a horizontal rotary oil burner is under semiautomatic control, what can generally be assumed?
• What is a vital factor in assessing the maintenance needs of boilers?
• What is the minimum amount of time a boiler should be blown down during winter?
• Why is it important to keep accident reports on file?
• What is the function of handholds on a boiler?
• What is a common device used to provide tempered fresh air in certain areas of a school?
• What is the primary function of a Fusetron?
• If there is too much oil in the combustion process, what adjustment should be made for optimal combustion?
• Which types of bearings are categorized as radial, angular, and thrust?
• What is commonly the cause of an air-bound radiator?
• How is flame failure detected in a rotary cup oil burner?
• How frequently should the safety valve of a heating boiler be tested?
• What classification does the manual reset pressuretrol fall under?
• What should the custodian engineer aim for in grievance management?
• What should be done if a combination faucet is in the off position and water leaks from the swivel?
• Which component is crucial for regulating air mixture in oil burning systems?
• Neoprene gaskets are typically used in pipelines carrying which substance?
• Which of the following is a critical safety feature in boiler operation?
• Which of the following is a sign of potential plumbing issues?
• The high low water alarm of a steam boiler is typically located in the...
• What device keeps a doorknob from rotating on the spindle?
• Which maintenance task can help prevent overheating in heating systems?
• What is a common indication that a water heater may need servicing?
• In the context of operation engineering, what does the term zeolite refer to?
• What is the main purpose of baffle plates in a furnace?
• What is the primary action to take in order to preserve freshly laid concrete?
• How often should a strainer in a number 6 fuel oil system be checked?
• What is the term used to describe the amount of water vapor mixed with dry air?
• How much will a 110-foot length of brass pipe increase in length when the temperature of the water increases from 40°F to 140°F?
• Which safety feature is required on both coal-fired and oil-fired boilers?
• In the combustion of common fuels, what is the major source of boiler heat loss?
• What does a Manometer measure?
• What is the recommended inspection frequency for portable fire extinguishers?
• What should the carbon dioxide content in the flue gases of an efficiently fired boiler measure approximately?
• What method should be used to check a CO2 fire extinguisher?
• How is a rotary cup oil burner started and stopped?
• Why is it important to maintain a balance between different ventilation systems within a building?
• What function does chlorine serve in swimming pool maintenance?
• What is the appropriate pH level for boiler water?
• What is the primary function of air chambers in pumps?
• What is the main purpose of the volute casing in a centrifugal pump?
• When checking the current draw of an electrical appliance, which law is typically applied?
• In an oil burner system, what should be done if the flame goes out?
• When laying up a heating plant for summer, what should be done to fire surfaces after cleaning?
• What is the most effective way to handle a clogged drain?
• What is a critical safety instruction for custodial staff using ladders?
• What is the primary purpose of a start drill?
• Where is braided packing typically found?
• What is the likely cause when boiler flues require frequent cleaning?
• Which type of valve obstructs water flow the least in water lines?
• In the event of a flame failure, what is the first response of the system?
• What is the function of a fusible plug?
• Which of the following components helps in managing the pressure in a rotary cup oil burner?
• What is the function of a sequential draft control on a rotary cup oil-fired boiler?
• In a rotary cup burner, what components are primarily adjusted to achieve the correct air/oil ratio?
• Amperes are a measure of which electrical parameter?
• How much fuel savings can be expected from lowering the thermostat setting by 5 degrees?
• What is the term for the addition of moisture to coal to enhance its combustion?
• If a boiler fails to deliver enough heat, what is the most probable reason?
• What component is typically connected to the steam coil flange on a steam-heated domestic hot water tank?
• How frequently should the spinning cup on a rotary cup oil burner be cleaned?
• What does the modutrol motor control on a rotary cup oil burner using number 6 oil?
• What term describes the lowest temperature at which oil can release sufficient vapors to ignite when exposed to flame?
• What are try cocks used for in steam boilers?
• How does insufficient boiler ventilation affect system performance?
• When does an automatic pressuretrol typically shut down the burner?
• Which of the following best describes the function of a vacuum breaker in heating systems?
• What is a feature of metering faucets?
• Which chemical is commonly used to increase alkalinity in feedwater?
• What should be checked first before starting the fire in a steam boiler?
• What should be the minimum size of a gas line for effective flow?
• What attitude should the custodian engineer maintain regarding grievances of subordinate personnel?
• What is the function of a stack switch in an oil burner system?
• What is the coefficient of expansion for brass pipe?
• How is a check damper controlled in response to thermostat settings?
• What should be checked first if the burner motor does not start after pressing the reset button?
• What two measurements are used to determine combustion efficiency?
• For efficient boiler fuel operation, what conditions should be maintained?
• What device controls the flow of oil into an automatic rotary cup oil burner?
• Which part of a fuel oil system would require daily checks to ensure efficiency?
• Why is it necessary to blow down the water column of a boiler daily?
• What is the most crucial reason for blowing down a boiler water column and gauge glass?
• What is a potential consequence of scale formation on a float-operated boiler supply valve?
• An instrument that identifies humidity is known as?
• What is the effect of having too much make-up water in a boiler system?
• What happens when the fuel oil suction strainer is not cleaned regularly?
• What percentage of carbon dioxide in flue gases indicates proper combustion of fuel?
• A 115 v hot water heater with a resistance of 5.75 ohms will draw what current at rated voltage?
• Which component of a rotary cup oil burner detects a primary air failure?
• What is the purpose of Sodium Sulphite in boiler systems?
• What characterizes a dry return line in a boiler system?
• Which chemical is commonly used to disinfect swimming pools?
• What cleaning method is NOT recommended for lacquer-coated surfaces?
• What method is used for igniting fuel oil in a fully automatic oil burning plant?
• The atomization of oil in a rotary cup oil burner is primarily achieved through what mechanism?
• What is a characteristic of perennials?
• What component is critical for the startup and shutdown of a rotary cup oil burner?
• What is the primary reason to keep the water line above the tank bottom in plumbing?
• Where should a Bibb reseater be used in maintenance tasks?
• When calculating united inches for a pane of glass measuring 14 inches by 20 inches, what is the total?
• How does the quantity of water delivered by a centrifugal pump change?
• What can changes in combustion efficiency of a boiler be evaluated by?
• What does a high stack temperature in a boiler suggest?
• What is the main purpose of a foot valve at the intake end of a suction line of a pump?
• A solenoid valve is also referred to as what type of valve?
• What condition is likely to cause fluctuations in fuel oil pressure?
• What is included in the minor repairs for oil burning equipment?
• Which of the following statements best describes a heating boiler's capacity?
• Lemon oil polish is most effective for polishing which material?
• What indicates that a boiler system is functioning properly?
• What is the purpose of adding sodium sulfide to boiler feedwater?
• How is boiler draft typically measured?
• How often should a boiler be blown down during the winter heating season?
• What is the primary reason for having gaskets on manholes of a boiler?
• Why should the pipe tanking water from a roof supply tank extend at least six inches above the bottom of the tank?
• What is the operation status of a boiler that has been sealed or red tagged by the department of buildings?
• How is the air oil ratio effectively adjusted in a rotary cup burner?
• What is the appropriate cleaning agent for a paint brush used with shellac?
• For safety, gas range pipes should be painted which color to indicate routing?
• In what situation is a windows fan most commonly used?
• Where is a suction gauge typically located in a fuel oil transfer system?
• What is the recommended cleaning solution for plated metal surfaces protected by a clear lacquer?