Senior Sewage Treatment Worker Practice Test

These questions are part of the practice quiz. Start practicing

• What is crucial for ladder stability according to safety rules?
• A pipe is generally threaded by using a:
• What term describes the ratio of weight of a substance to the weight of an equal volume of water?
• In what year does the Commissioner of Public Works present the annual report?
• What is the most similar meaning of the word maximum as per the article?
• What is the primary function of a grit chamber in a sewage treatment plant?
• Which of the following items has the lowest viscosity?
• What is the primary reason reprimanding a crew member in public is considered a bad practice?
• What material are soft jaw inserts commonly made of to protect metal surfaces in a vise?
• Among the listed abrasives, which is the least coarse?
• What type of pipe does Schedule 40 designation refer to?
• Material removed from sewage by the fine screen is most frequently:
• A wet undigested sludge with a large amount of grease will most likely?
• Why is a leak in a chlorine tank particularly hazardous?
• What is the advantage of using brass liners in a bench vise?
• When should artificial respiration be performed on a victim?
• What is the primary purpose of an electrical transformer?
• What is the sum of 3 5/8 + 4 1/4 + 6 1/2 + 7 1/8?
• What is considered a sign of a potential gas leak in sewage treatment facilities?
• A spanner wrench is specifically designed for which purpose?
• The use of a cold chisel with a mushroomed head is:
• Why should electric hand tools not be lifted by their service cords?
• What is the total length of pipes measuring 22 1/8", 7 3/4", 19 7/16", and 43 5/8"?
• A metal washer is MOST often used with which type of screw?
• Which characteristic best describes activated sludge?
• If a car travels at a constant speed of 36 miles per hour, what is its speed in feet per second (one mile equals 5,280 feet)?
• What process is used to control odors in sewage systems?
• What should be ensured about the cord of an electric hand tool during transportation?
• Compressed air can be used to clean generator and motor windings provided the air is:
• In which stage of sewage treatment are floating materials, like grease, typically removed?
• Which temperature range is considered the most efficient for sludge?
• Which component is crucial for preventing spills and backups in sewage systems?
• The one of the following that is used to connect two pipes together in a straight line is a:
• What is the primary purpose of aeration in sewage treatment?
• Which conditions should sewage treatment workers avoid when working near electrical equipment?
• Which type of pump is most commonly used for pumping sewage?
• A bar screen serves the same purpose as a:
• If a car travels 60 miles per hour, how far does it travel in 2.5 hours?
• Why should water NOT be used to extinguish fires near electrical apparatus?
• What is the primary function of a trap under a plumbing fixture?
• What is the estimated total cost of the water pollution program initiated in 1996?
• What is a deep two-storied sewage tank that features an upper sedimentation chamber and a lower chamber called?
• When using a 15-foot ladder secured against a wall, how far can a person safely reach out to one side?
• Which material should fittings be made of when used with copper pipes?
• What does the term atmosphere refer to in the context of the article?
• What is the main function of a check valve in a pipeline?
• What is the total of 25% + 35% + 20% + 20%?
• The type of motor that MOST frequently does NOT use brushes is the:
• How long should a freshly poured concrete surface exposed to air be cured?
• Which method is used to prime a centrifugal pump?
• Which term is used to express the rating of a storage battery?
• What is the method of removing floating grease or scum from the surface of sewage in a tank called?
• What is a common indicator of water quality in sewage treatment plants?
• What is installed between two pipe flanges to ensure a sealed connection?
• How are sludge tanks typically heated?
• What is the process called when sludge digestion occurs without the presence of free oxygen?
• What is the best method for cleaning a dirty commutator?
• What is the unit of electrical capacitance?
• Which type of motor is most commonly used with an AC or DC source of supply?
• What monitoring parameter is essential in evaluating the performance of a sewage treatment plant?
• Which type of pump seldom requires a relief valve?
• To ensure safety, what is the maximum distance from the wall to the foot of a 12-foot ladder?
• What type of lubricating grease should be used on pump ball bearings exposed to water washing?
• What device is most frequently used to prevent an electric motor from being overloaded?
• How often is it recommended to lubricate machinery?
• What type of oil is best used for cutting threads on steel pipe?
• How can the hazards of electric shock be reduced when operating a portable electric tool in a damp location?
• What is a necessary quality for records in a sewage treatment plant to support future changes or expansions?
• What is an effective way to communicate safety expectations to a sewage treatment crew?
• A U-tube manometer is principally used to measure what?
• What does the word evident mean as used in the article?
• The type of pump most frequently used to pump thickened sludge is the ___________ type:
• How many pounds are in ten bags of Portland cement?
• Which action is least likely to promote good work by a leader?
• Which tool is most likely used for sharpening a chisel?
• What is the main goal of sewage treatment?
• What role does a centrifuge play in sewage treatment?
• If five dry cells are connected in series, what will the terminal voltage be in relation to one cell?
• A column of water with a height of 4.6 feet at sea level will exert a pressure of MOST NEARLY how many pounds per square inch?
• What does the word "discharged" mean in the context of the article?
• What is an example of a proper safety measure when sharpening tools?
• What is the main reason for lubricating machinery?
• What does the abbreviation BOD stand for?
• What is the volume of water in gallons contained in a cubic foot?
• Consumption of electrical energy is registered on which device?
• When sharpening a tool on a grindstone, why is the tool often dipped in water?
• When sludge is withdrawn from a sludge gas collector tank, what must be added to prevent the development of negative pressure?
• In which type of plant does flocculation most frequently occur?
• What is the primary reason for putting orders in writing?
• Which of the following devices is considered a primary treatment device for sewage?
• Which tool is most appropriate for threading a round rod?
• Which of the following devices is usually operated by compressed air?
• The term "categories" in the given context most nearly refers to what?
• If a concrete mix is formulated as 1:2:4, how is it composed?
• In a digester tank with a floating or rising cover, it is made airtight by means of a(n):
• What is the purpose of wearing safety goggles while operating a drill press?
• What type of pipe fitting allows for four openings to connect a line at right angles?
• What is the appropriate first aid for a conscious person suffering from chlorine inhalation?
• Which tool is usually used to drive a lag screw?
• If a person is bleeding heavily, which is the most effective initial treatment?
• What is the circumference of a circle with a diameter of 10 inches, MOST NEARLY?
• What is the usual method for adding chlorine to sewage?
• What is the best method for detecting chlorine leaks?
• Ordinary soft solder is primarily a mixture of which two metals?
• In case of severe burns, what is the first thing you should do?
• Which statement is most nearly correct regarding lubrication?
• What is a fastener that has threads at both ends called?
• When might it be necessary to replace the ballast in a fluorescent light?
• Which type of wrench is specifically designed for tightening pipe fittings?
• Which knot is safely used for tying the ends of two dry ropes of the same size?
• What is the electrolyte used in an ordinary flashlight-type dry cell?
• After witnessing an acid splash into a fellow worker's eyes, what should you do first?
• What is the purpose of sludge digestion in sewage treatment?
• What type of portable fire extinguisher is most effective for fires involving live electrical equipment?
• What does it indicate if crew members ask questions about a new procedure being introduced?
• How does explaining departmental procedures to workers impact their interest?
• At what rate is air applied in a conventional activated sludge treatment plant?
• The enlarged tank will be able to hold ____________ more than the original tank.
• How many gallons of water can a tank measuring 3 feet by 2 feet by 2 feet hold?
• What is the most effective tool for cleaning files?
• In hydraulic systems, what is the common purpose of lard oil?
• What device prevents overheating in an electric motor?
• How does one ensure proper alignment of machine parts during reassembly?
• A set screw is often used to:
• What is the most frequent cause of noisy operation in a motor?
• In the event of lye splashing into someone's eyes, what is the first recommended action?
• When addressing safety hazards, what is paramount for a sewage treatment worker?
• Who held the position of Stationary Engineer Electric?
• What is the primary hazard associated with storing batteries while being charged?
• Which oil is recommended for the gearbox of a 20-ton sewage plant crane?
• What is the purpose of a venturi in a sewage treatment plant?
• If you are pumping water at 100 gallons per minute for one hour and then 50 gallons per minute afterward, how long will it take to add 10,000 gallons to a tank?
• When lifting heavy objects, how should one position their body?
• What is a significant benefit of a supervisor introducing a new worker to the team and providing information about the workplace?
• What is the main reason for grounding electrical equipment and circuits?
• Which type of gauge indicates both pressure above and below atmospheric pressure?
• In water supply systems, small leaks are often filled over time with which substance?
• What is the main reason for disinfecting treated sewage before discharge?
• What is the most effective way for a supervisor to lower accident rates among workers?
• An oilstone is typically made of which material?
• What immediate response should be taken if someone has been exposed to a chemical spill in their eyes?
• What is the appropriate tool to use for removing burrs from inside a pipe?
• What factor primarily determines the sizing of sewage treatment tanks?
• What defines a safe edge in a specific application?
• In aeration tanks, what role does sludge play in the treatment process?
• Which parameter is most critical in assessing the performance of a sewage treatment system?
• In the electrical industry, what does BX refer to?
• The difference between a stud and a bolt is that the stud has:
• If a pump could produce a perfect vacuum, what is the MAXIMUM height it could lift water at sea level, in feet?
• How many cubic feet of concrete are in a slab that is 5 feet wide, 6 feet long, and 6 inches deep?
• What does "rodding" a sewer pipe most likely refer to?
• Which of the following methods can enhance the efficiency of sewage treatment?
• How often should routine maintenance of sewage treatment equipment typically occur?
• Which factor primarily affects the efficiency of the activated sludge process?
• What was the amount of municipal construction underway in 2012?
• When training a new worker to operate equipment, what is the first step?
• If one third of a 19-foot length of lumber is cut off, what will the length of the remaining piece measure approximately?
• Why are punch marks placed on machinery parts during repair?
• What does the term pollution most nearly mean?
• If a centrifugal pump is not delivering the expected sewage flow, which of the following is NOT a potential cause?
• If smoke is seen coming from an electric control device, what is the first action to take?
• A job requires 48 hours of work. If two workers are assigned to the job, how many hours will each worker need to work?
• What are the wooden planks used to scrape sludge from the bottom of a tank called?
• What hazard is posed by hydrogen given off from charging batteries?
• Which type of wrench is the best choice for a large square nut?
• In the Modified Aeration process, what is the most nearly percentage of returned sludge to the aeration tank?
• What valuable gas is produced as a byproduct of sewage treatment?
• When someone is in shock, what should be prioritized in their treatment?
• Which fastener is the best choice for attaching a pipe support bracket to a concrete wall?
• What is a notable disadvantage of sludge lagoons in sewage treatment?
• Why is it important to know the location of pressure points when treating someone?
• What specific property characterizes a malleable metal?
• Why is it best to use a screwdriver with a square shank?
• Which sludge gas encountered at sewage treatment plants is corrosive and damaging to metals?
• If an employee is injured and unconscious at a work site, what is the best course of action to take?
• What is the function of a circuit breaker similar to?
• How are grease and fats typically removed from sewage?
• What is the safest way to carry a power tool?
• Frothing in sewage treatment is most frequently attributed to which factor?
• What is the main reason for defective operation in an aeration tank?
• Which type of valve allows water to flow in one direction only?
• What is the optimum pH value of sludge in a digester?
• The one of the following that is used to change the speed of certain types of electric motors is a(n):
• Which of the following processes is utilized for nutrient removal in advanced sewage treatment?
• What device in sewage treatment plants is designed to break or cut up solids found in sewage?
• What is the electrolyte commonly found in an ordinary storage battery?
• When using a needle valve, what is its primary function?
• Before starting a newly installed pump, what should you do first?
• What is the resistance of the circuit if the voltage is 120 volts and the current is 2 amperes?
• What is the primary purpose of a center punch?
• Aside from the bulb, which part of a fluorescent light requires frequent replacement?
• What does the word bearing mean in the article?
• How many new plants will the city add according to the article?
• What is the impact of a clogged suction line on a centrifugal pump?
• Approximately how many minutes elapsed between the start of the sewage treatment worker's inspection and the ambulance's arrival?
• What is the main purpose of a foot valve in a centrifugal pump?
• What should a supervisor do if a crew member consistently misses deadlines?
• How can moisture content in sludge be reduced effectively?
• The floating cover for a sludge gas storage tank is kept under a gauge pressure of?
• What is the primary cause of water hammer in a sewage system?
• What is the function of a starter in a fluorescent light fixture?
• What tool is best suited for drawing a circle?
• What is the primary method for odor control in sewage treatment plants?
• A rasp is classified as which type of tool?
• What is a common cause of pump failure related to water flow?
• What device is typically used to control the flow of sewage into a treatment plant?
• In plumbing, what technique involves using a rod for cleaning pipes?
• What tool is commonly used to cut off the head of a rivet?
• Which piece of equipment is operated in conjunction with air pressure?
• How can a supervisor best assess the effectiveness of safety training for workers?
• Which element in sewage treatment is primarily responsible for breaking down organic matter?
• Why is it important to monitor the effluent quality from a sewage treatment plant?
• What is the purpose of brass liners over the jaws of a bench vise?
• What does the abbreviation I.P.S. stand for in relation to pipes?
• What is the most nearly sewage detention time in an aeration tank using modified aeration?
• What type of wrench is used for tightening a round nut with notches?
• Which is an important consideration in the operation of sludge digesters?
• How should a supervisor handle a crew member who complains about favoritism in work assignments?
• What method is primarily used for the removal of suspended solids from sewage?
• The type of pipe that is MOST frequently made with bell and spigot ends is:
• What happens to the amount of dissolved oxygen in waterways due to pollution?
• What is an acceptable method for caring for wooden ladders?
• What is a likely outcome for a person exposed to an irritant gas who does not become sick immediately?
• What is the most important safety precaution when using an electric drill press?
• Which description matches a board that contains exactly 10 board feet?
• Which device is normally used to control the flow of sewage to the treatment plant from the intercepting sewer?
• Among common obstructions in sewer lines, which occurs most frequently?
• What does the term malodorous most closely mean?
• After brass or black iron pipe has been cut, it should be:
• At what exact time was the victim found?
• If a crew member presents a suggestion that you believe will not work, what is your best response?
• What is a significant consequence of excessive grease buildup in sewage systems?
• What is the square root of 64?
• Which type of wrench is commonly used for tight spaces and difficult angles?
• What is a device with an edge or notch used for measuring liquid flow called?
• A regulator gate usually closes when the sewage reaches a predetermined:
• Which of the following saws is best suited for cutting wood along the grain?
• To increase the delivery volume of a reciprocating pump, what modification is typically made?
• How many days will it take for 4 men to complete a job that 6 men can complete in 8 days, assuming equal work rate?
• What is the best way for a supervisor to address a crew member who has not completed a task?
• What is the benefit of using pipe joint compound when making up a screwed joint?
• What happens to most digested sludge in the city sewage system?
• What is the best approach for a supervisor to take with an older, slower worker who is otherwise reliable?
• After a discussion with a crew member where you have disproved his complaint, what is the best course of action?
• What tool is used for cutting internal screw threads?
• If a seller quotes a discount of 10% on paint priced at $6.35 per gallon, what is the actual payment per gallon?
• What is the volume in cubic feet of a coal bin measuring 8 ft long, 5 ft wide, and 7 ft high?
• Which type of sewage treatment is primarily focused on biological processes?
• Upon discovering a mistake in a crew's job, what should a supervisor prioritize?
• Which type of pump provides a smooth continuous flow of liquid?
• A plant is designated as an Activated Sludge Plant when:
• What is the distance in inches between the ends of a 6-inch horizontal line and an 8-inch vertical line drawn at right angles?
• What is the area in square feet of a floor measuring 42 feet wide and 75 feet long?
• On what day did the incident occur?
• What is the weight, in pounds, of one cubic foot of fresh water?
• Where should oily waste rags be stored when not in use?
• If a supervisor notices a crew member skipped routine maintenance, what should the supervisor do first?
• On a 1" bolt with 10 threads per inch, how far does the nut move after being turned 6 complete turns?
• Which metal is most commonly used for outboard bearings?
• Which disease can result from drinking water polluted by sewage?
• What tool is used to remove burrs from the end of a 1/2" diameter steel pipe after cutting?
• How do settling tanks operate effectively?
• What are short pieces of pipe threaded on both ends called?
• What would be a poor choice for a supervisor regarding their own responsibilities?
• How can the current in a simple electrical circuit be calculated?
• What is the first action you should take if a crew member falls down a flight of stairs and injures his leg?
• What is a common defect of a chisel?
• Who was the immediate superior of the sewage treatment worker?
• What commonly occurs to stop small leaks in steel or wrought iron water pipes?
• Which of the following is considered a potential byproduct of sewage treatment?
• What is the name of the sewage treatment worker?
• Which step is taken to prevent or control sludge bulking in the Activated Sludge Process?
• Which type of waste is typically treated in a sewage treatment plant?
• What is the size of the smallest graduation on a 6-foot folding rule typically?
• What is considered the most important skill in successful leadership?
• What should be done immediately if a co-worker is unconscious and not breathing after an electric shock?
• Why is painting metal equipment in a sewage plant important?
• If you discover an unconscious person across a live electric wire, what should your first action be?
• The capacity of a pump is most frequently expressed in which of the following units?
• Which type of wrench is best suited for tightening a nut with a limited swing length?
• What is the approximate amount of chlorine in pounds per million gallons to achieve 0.5 ppm residual in primary effluents?
• Which fraction is equivalent to 0.0625?
• What method yields the quickest results when starting a digester unit?
• Which tool is often used alongside a square shank screwdriver?
• What was the name of the patrolman involved in the incident?
• What is a critical factor in the efficient operation of machinery?
• Which is an essential consideration in the design of a sewage treatment facility?
• To protect current and future beaches, how much additional funding must the city allocate?
• What property describes a metal that can be rolled into thin sheets?
• To control the flow of liquid to a delicate gauge, which type of valve should you use?
• Which process in sludge treatment reduces the volume of sludge sent to the digester?
• What is the best basis for setting up a maintenance program for new equipment?
• If a given saw has 8 points per inch, what type of saw is it likely to be?
• What is the best course of action if a 15-ampere fuse blows and continues to blow after replacing it?
• What is the primary purpose of the sluice gate in sewage treatment?
• A pump can fill a 15,000 gallon tank in 2 hours and 30 minutes. How long will it take to fill a 60,000 gallon tank at the same rate?
• In the provided context, the word "offensive" most nearly means what?
• What is usually necessary to properly ground portable electric hand tools?
• What is the BTU per cubic foot value of sludge gas from a well-established digestion tank?
• Which method is commonly used to reduce the volume of sewage before treatment?
• How can a chlorine leak typically be detected?
• What is the primary reason for enclosing electrical switches and current-carrying components?
• For pumping against a very high head, which type of pump is the best choice?
• What is the best type of fire extinguisher to use on a fire caused by a shorted air-conditioning unit?
• What is the primary reason for mixing a thinner into paint?
• What is the meaning of the word vacuum as used in the article?
• What should a supervisor prioritize to ensure the safety of their workers?
• By 2030, how many gallons is the city expected to treat daily?
• What is the function of grit chambers in sewage treatment plants?