Machinery Repairman Practice Test

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• What type of steel is it when other elements are added to iron during refining?
• What has all the information necessary for the proper operation of a ship's engineering plant?
• Which method is used to visually determine whether the seat and the disk of a valve make good contact with each other?
• Name a common method for detecting fuel contamination in a shipboard fuel system.
• Which of the following is an alloy commonly used for piping due to corrosion resistance?
• Scales are made of wood, plastic, or metal and they generally range from 6 to how many inches?
• Which device is commonly used to automatically regulate system variables such as speed or pressure?
• To determine bandsaw blade length, which option correctly describes the measurement method?
• What is the purpose of a water-in-fuel warning on shipboard fuel systems?
• For turbine casings used on submarines, a percentage of what material is used, which is more resistant to steam erosion than carbon steal?
• Regarding fouling in a heat exchanger, which is the correct description of its effect on pressure drop?
• Which of the following is a common pair of non-destructive examination methods used for metal components?
• When performing operating pressure tests on gas systems using a soap bubble leak test, what is the hold time period?
• The term for a pump where discharge volume changes with head is which?
• A centrifugal pump is considered which type because the discharge volume changes with the head?
• External programmatic reviews are commonly called what?
• In pump performance testing, what does discharge head represent?
• Which statement best defines a tight shutoff on a gate valve?
• Which material is not listed as a pipe material in the group alongside steel, copper, brass, and aluminum?
• If no minimum pressurization time is specified or it is impractical, maintain pressure for at least how many minutes before inspecting joints?
• Which QA form is used for miscellaneous testing such as operational testing?
• Vernier Calipers are available in sizes ranging from 6 inches to what size?
• Which safety precaution should be followed when servicing high-pressure fuel systems on a naval vessel?
• Why is purging fuel lines after maintenance before starting engines essential?
• Which blade has 14 teeth and is used for thin tubing and sheet metal?
• What term refers to external programmatic review of processes to ensure compliance with parent directives?
• Which types of valves are used in high-pressure, high-temperature systems?
• What is the minimum interval for CMPOs to inspect controlled material storage areas at their work centers?
• What gauge is used to lay out work for machining operations or to check the dimensions on surfaces that have been machined?
• At a minimum, how often must CMPOs inspect controlled material storage areas in their work center?
• Which type of automatic valves provide a steady pressure into a system that is at a lower pressure than the supply system?
• Why is it important to maintain clean fuel and water separation in the fuel system?
• Pig iron contains approximately what percentage of carbon?
• Which set of items represents the major categories of non-destructive testing used on shipboard metal parts?
• Which designation code is used for material that does not require downgrading for use in level 1 applications?
• Which statement best describes static versus dynamic balancing?
• What is established when a metal specimen begins to stretch under gradually increasing pressure?
• What is the smallest division on a standard micrometer, and what is its typical value?
• What is the primary purpose of lockout/tagout procedures before servicing shipboard machinery?
• What term describes deformation or change in shape of a metal when a stress is applied?
• What is the maximum temperature beyond which brass or bronze valves are not used?
• Name three common types of shipboard valves and a typical use for each.
• Which property enables a metal to resist deformation when a load is applied?
• What are typical consequences of overheating bearings on a marine engine?
• What are the simplest type of pipe fittings?
• Which statement correctly compares the carbon content of low, medium, and high carbon steels?
• What is the correct equation to determine bandsaw blade length?
• What is the soak time of an operating pressure test from a remade mechanical joint that has only had software replaced?
• Which form documents and tracks deficiencies requiring further investigation?
• Which type of pumps are driven by electric motors to move various liquids aboard gas turbine ships?
• If a flange joint is under-torqued, what is the most likely consequence?
• Submarine turbine casings utilize a percentage of which material to resist erosion?
• What is a likely consequence of insufficient lubrication in engine bearings?
• Brass and bronze valves are never used in systems exceeding which temperature?
• Which term describes the metal's internal resistance to shape change when an external load is applied?
• How would you identify a loose electrical ground on a motor control circuit aboard a ship?
• True Naval brass contains 60% copper, 1% tin and what percent zinc?
• Which blade has 14 teeth and is used for thin tubing and sheet metal?
• In shipboard piping, what does pipe scheduling refer to and why is it important?
• A Can-type combustion chamber is most commonly associated with engines that have which component?
• The FMA QAO will conduct an evaluation of the overall adequacy and effectiveness of the FMA's QA program how often?
• What is the primary safety objective of a purge line when performing maintenance on shipboard equipment in a gas-free environment?
• Which type of engine configuration is used for main propulsion on ships?
• What does a boiler safety valve protect against?
• Which alloying element is primarily associated with improving hardenability, corrosion resistance, toughness and wear resistance?
• Which type of pumps are essentially self-priming and differ from centrifugal pumps?
• Which blade corresponds to 6-8 teeth for annealed high carbon steel and high speed steel?
• Which non-destructive testing method is commonly used to detect internal flaws not visible on the surface?
• What does a high differential pressure across an oil filter indicate?
• What type of stress pulls metal apart?
• True Naval brass composition: what is the copper percentage in True Naval brass?
• Which blade is described as 10 teeth and used for solid brass stock, iron piping, and heavy tubing?
• Which material is a corrosion-resistant alloy commonly used for pipe and tubing?
• Most submarine seawater valves are made of an alloy of 70 percent copper and 30 percent of which substance?
• When performing hydrostatic testing on piping, which safety principle is essential?
• In feedwater quality, which substance indicates impurities that limit operation?
• TYCOM QA Assessments of ISICs and FMAs will be conducted annually, not to exceed how many months?
• What is the percent of carbon in high carbon steel?
• When a ship relies on external services rather than its own plant, this status is known as what?
• What is the internal resistance to a change in shape when an external load is applied?
• Which valve type is best suited for throttling control?
• The rotor of every turbine must be positioned radially and axially by what?
• What are used in special applications where you want to ensure that the components joined by the fasteners will not loosen?
• How is shaft alignment checked and corrected after installing a marine propeller shaft?
• What is the basis of all ferrous metals?
• Which status is the ship considered to be in when it stops operating its own plant and is receiving services from shore or other ships?
• Explain the difference between a centrifugal pump and a positive-displacement pump in terms of flow characteristics and typical applications aboard ship.
• Which non-destructive testing method is best suited to detect surface and near-surface defects in ferromagnetic materials?
• Which combustion chamber type is primarily used on engines that include a centrifugal compressor?
• A power hacksaw blade with 14 teeth is best described as used for which task?
• How many types of combustion chambers are there?
• What effect does fouling have on a heat exchanger's performance?
• Which non-destructive testing method is used to detect internal weld discontinuities using ultrasonic energy?
• What QA form is used to document OQE for satisfactory hydrostatic/pneumatic testing?
• An audit of the tag-out log is conducted by the Engineering Duty Officer every how many weeks while in port?
• How would you perform a basic leak test on a hydraulic line?
• What is the purpose of a seawater cooling system's heat exchanger in a diesel powered ship?
• Miscellaneous testing, such as operational testing, will be documented on what form?
• What is the function of an engine lube oil cooler in the system?
• If certification testing is not completed, what documentation is required?
• If a fuel oil centrifuge fails to remove water and solids, what is the most likely consequence?
• What is added to steel to increase shock resistance, and resistance to softening at hard temperatures?
• You must wear insert-type ear plugs and circumaural-type ear muffs when noise exceeds how many dBs?
• What is the casualty control portion of the Engineering Operational Sequencing System?
• During hydrostatic tests of piping, why is pressure relieved before opening test connections?
• A ship cannot operate if the distilled water for feedwater contains more than the maximum allowable amount of what?
• Which property enables a metal to resist strain when a stress is applied?
• OD, ID and what else make up the three important dimensions of any tubular product?
• In ship engineering operations, which document provides the complete instructions for operating the plant?
• How does a cooling water economizer improve engine efficiency?
• Continued exposure to noise levels of 85 dB or greater and impulse noise of how many dB can cause severe hearing loss?
• The document used to record nonperformance of testing or deferral to an at-sea test is which form?
• Which iron product is described as a highly refined pure iron?
• What is added to steel to increase harden ability, corrosion resistance, toughness and wear resistance?
• Under what condition must a Welding Procedure Specification be used and the welder be qualified?
• A power hacksaw coarse blade has how many teeth and is used for which metals?
• Which term describes the metal's resistance to indentation and penetration?
• All audits should be conducted on what basis unless a shorter period is specified?
• Vernier calipers are graduated in increments of what?
• Which pump type is used for lube oil service and transfer, tank stripping, bilge, aircraft fueling and defueling, and for handling lighter viscous liquids?
• What is the function of the fouling factor in heat exchanger analysis?
• What is the function of a lube oil purification system on a marine diesel engine?
• Which component removes water from fuel in a marine fuel oil filtration and separation system?
• Which form is used when tracking corrective actions?
• Which property describes the ability to return to its original size and shape after the force is removed?
• Material coded as what designation does not require downgrading for level 1 applications?
• When troubleshooting a non-operating pump in a shipboard hydraulic system, which sequence of checks is appropriate?
• What is the purpose of a lubrication oil filter and when should it be replaced?
• Which term describes steel with other elements added during refining?
• Requests for DFS will be normally submitted on a what?
• What term describes audits conducted on only one specific area of the QA program and do not track a job from start to finish?
• What does a manometer measure in a hydraulic system test?
• Which portion of the Engineering Operational Sequencing System focuses on emergency management?
• How can a heat exchanger be fouled, and how would you troubleshoot a decline in heat transfer efficiency?
• Which term describes the deformation or change in shape of a metal when a stress or load is applied?
• For a power hacksaw medium blade, how many teeth and what metal is it used for?
• What is the role of a centrifuge in a ship's fuel oil system?
• What is a typical consequence of cavitation in a marine pump?
• Which term describes the metal's ability to resist deformation when a load is applied?
• What is the maximum months for TYCOM QA Assessments of ISICs and FMAs?
• What is the purpose of serviceability testing on a pump installation?
• Which instrument is used to measure the height of a feature from a reference plane in precision work?
• Who is responsible for all DFSs forwarded to TYCOM for approval until the DFS is cleared, canceled or formally transferred to another TYCOM?
• What is the percent of carbon in low carbon steel?
• Within how many days of receipt of the ISIS Official Audit Report must Shop's force provide a report to the ISIC detailing completed corrective action, proposed corrective action, and schedule of accomplishment?
• What is the purpose of the manifold in a shipboard engine room?
• The pipe and tubing used in fluid systems today are commonly made from steel, copper, brass, aluminum, and what other material?
• When reading a shipboard mechanical drawing to identify critical clearances, which approach is most appropriate?
• Which audit type is best described as focusing on a single area and not the entire process?
• System drop tests will be documented on what QA form?
• Which statement best describes the difference between a gas turbine lubrication system and a reciprocating engine lubrication system on ships?
• Which element added to steel increases tensile strength?
• Which term describes the metal's ability to withstand permanent deformation without fracturing?
• Which of the following is a common nondestructive examination method used for metal components on ships?
• What is the ability to withstand shock, to endure stress, and to deform without breaking?
• Which type of feedback device is used to provide automatic control of speed, pressure, or temperature?
• The four areas of operation in the main steam system are generation, expansion, condensation, and what else?
• In shipboard fabrication, what is a stress-relief anneal?
• What is the ability of metal to withstand permanent deformation without breaking or rupturing?
• What is the significance of proper torque when assembling a flange joint on a marine piping system?
• Which of the following is a common cause of elevated engine vibration?
• During troubleshooting, which measurement helps identify fouling in a heat exchanger?
• The submarine seawater valve alloy noted is 70 percent copper and 30 percent nickel; which element is the nickel?
• What is the purpose of a crankcase ventilation system in an internal combustion engine?
• Define Net Positive Suction Head (NPSH) and why insufficient NPSH leads to cavitation in marine pumps.
• Which instrument is used to transfer dimensions and layout lines with a scribe on layout work?
• What is used primarily in layout and alignment work and it is used with a scribe to transfer dimensions and layout lines?
• What is the typical cause and remedy for cavitation in a propulsion seawater pump?
• Documentation for incomplete certification testing is filed as which form?
• Which material is used for valves in high-temperature, high-pressure systems?
• What component carries and supports the rotor weight while maintaining radial clearance between the rotor and its casing?
• What are turbine casings made of for non superheated steam applications?
• What is a condensate return line and why is it important in a steam system?
• The remaining percentage in True Naval brass after 60% copper and 1% tin is what?
• What is the percent of carbon in medium carbon steel?
• How does corrosion allowance relate to pipe scheduling in marine piping systems?
• What is the most commonly used type of lockwasher?
• Describe the procedure to repair a leaking gasket on a marine pump.
• In the filtration sequence for marine fuel oil, what is the role of the pre filter?
• Which term describes the ability of a metal to withstand extensive permanent deformation without breaking?
• In saltwater service, cyclone separators are typically fitted on pumps with a total head of at least how many psi?
• Who will develop audit guides for all audits?
• What is the function of bearing white metal in engine bearings?
• What is the purpose of a Piping and Instrumentation Diagram (P&ID) in shipboard systems?
• Which of the following is another common method for detecting fuel contamination besides water-in-fuel detectors?
• Which types of valves are used to shut off or partially shut off the flow of fluid?
• What is the teeth count and metal for a power hacksaw regular blade?
• Which pump type is known for being essentially self-priming?
• What is the purpose of dynamic balancing in rotating machinery?
• What is the primary purpose of lockout/tagout procedures?
• Which term describes the deformation or change in shape of a metal when a stress or load is applied?
• Sometimes suction must be taken from one of many sources and discharged to another unit or units of either the same or another group. What is used for this type of operation?
• Which form documents and tracks deficiencies that require further investigation and programmatic evaluation?
• How does marine diesel injection timing affect engine performance and emissions?
• What is added to steel to increase tensile strength?
• Which term is abbreviated as NDE?
• Which entity is responsible for DFS approvals during the approval process prior to clearance by Tycom?
• Which diagnostic tool is used to differentiate common causes of engine vibration such as misalignment, imbalance, bearing wear, and lubrication issues?
• Describe a basic step in performing a vibration analysis on rotating equipment.
• What will be used to document nonperformance of the required testing and/or deferral of certification of the system to an at-sea test?
• Which propulsion configuration is commonly used to drive the main propulsion on ships?
• Describe the typical sequence of operation for a marine fuel oil filtration and separation system.
• Which type of engine is commonly used to drive a ship's service generators?
• Split-Shaft arrangement is commonly used for which propulsion purpose on ships?
• Pig iron is composed of approximately what?
• Which statement about a cooling economizer is correct?
• Which statement best describes the purpose of a fuel oil heater in a marine diesel system?