Machinist’s Mate (MM) "A" School Test 3 Practice

These questions are part of the practice quiz. Start practicing

• What are Lube Oil (LO) strainers and filters used for in the LO system?
• What is measured as a differential pressure drop across an opening in the feedwater supply piping?
• Where is the Engineering Operational Casualty Control (EOCC) Manual available to all personnel?
• How many Main Feed Booster Pumps does each Feedwater System have?
• Steam serves propulsion and power generation, forced draft blowers, and which other plant type?
• The condensate temperature leaving the hotwell should be within how many degrees of the condenser's condensing temperature?
• What is the basic function of the economizer?
• The component that houses the level controls for feedwater makeup and the drum valves is the
• What device converts kinetic energy into pressure in the flow path of steam?
• What component is stated to work with condensate and MUF to control water quantity?
• What is the main function of the Automatic Feedwater Control Valve?
• Which system provides a means of removing non-condensable gases released during the condensing process?
• What phrase best defines viscosities?
• Which phase is the last phase in the basic steam cycle?
• What is the purpose of the Emergency Feed and Feed Transfer Pump service air connection?
• The Make-Up Feed (MUF) system uses a demineralizer to remove contaminants that are present in feedwater coming from the ______.
• Where can the Restore Casualty checklist be found?
• What publication contains procedures, charts, and diagrams required for operation of the ship's propulsion plant?
• Which item should be removed, as a general precaution?
• Sections of shafting outside the hull are usually supported by which bearing?
• The guard valves upstream of the turbine throttle valves serve primarily to do what during a fault?
• Which statement about the SSTG strainer maintenance is correct?
• What is the maximum allowable temperature of the Superheater Tube during Emergency Boiler Light-Off?
• About how many inches (in) of mercury (Hg) should the vacuum in the main condenser be?
• Which component takes suction from the Deaerating Feed Tank (DFT) and discharges to a common supply line?
• Which statement best describes the function of the stop valve and stop-check valve when isolating main steam?
• Baffles are best described as which of the following?
• What is the temperature and pressure of main steam from the boiler superheater?
• What prevents steam nozzles from becoming clogged with foreign material?
• Which component provides manual control when the automatic regulator fails by bypassing the automatic regulation path?
• The cooling water pump circulates water when the ship is on standby, going astern, or maneuvering at speeds below __ knots.
• The Non-Condensable Gases Removal System exhausts to which component?
• The unloading valve shares which characteristic with the make-up valve?
• Spaces shall be considered manned if a roving patrol or system monitor enters the space at least every - minutes.
• What is the pressure of the identical superheated steam supply in each Main Machinery Room (MMR)?
• How many total tons of reserve feedwater are contained in the feed tanks?
• The Enclosed Operating Station (EOS) houses consoles for monitoring and manipulating which ship system?
• In the auxiliary seawater circulating system, how many independent SSTG condensers are used?
• The branch line for the desuperheater leakage test sample cooler is located between which components?
• Which part of the steam system consists of two pairs of deck connections for taking on shore steam?
• If the main feed pump fails, which component ensures feedwater is supplied to the boiler?
• Bulkhead isolation valves can be operated from the MR supplying the steam, or which other location?
• What is the function of the Main Feed Booster Pump?
• What is the significance of the Sentinel-Relief Valve?
• Which motor-operated valve may be operated locally and for closure on the BCC, the Damage Control deck, and the Boiler Front Console?
• The boiler control console contains control for which parameters?
• Diesel engine systems have what type of LO filtering capabilities?
• The main air ejectors receive their steam supply from which reducing station?
• Which component in the propulsion system is directly associated with receiving steam from a 600/150-psi reducing station?
• The ship houses two steam generating systems at which locations?
• Which statement best defines viscosity?
• Which device is described as unloading valves used in the exhaust-to-condenser connection?
• The acronym DFT stands for which component?
• Which element contains level controls that operate the make up and drum valves to maintain the proper feedwater levels?
• The CRP emphasizes memorizing which actions?
• Guarding valves upstream of the turbine throttle valves are installed for what purpose?
• How many main feed booster pumps does each Feedwater System have?
• Which phase is the last phase in the basic steam cycle?
• Which component has the same basic configuration and operation as the make-up valve?
• Which component is equipped with a bypass as a manually operated regulating valve for manual control in case of automatic regulator failure?
• MRG stands for which equipment?
• Who is responsible for custody of reduction gear keys?
• Identify the valve that links the auxiliary exhaust system to the main condenser.
• How do heat exchangers primarily transfer heat between fluids onboard the ship?
• The acronym MCRP stands for which procedure?
• How many 150-psi auxiliary steam systems are contained in each Machinery Room (MR)?
• Which line carries excess gland-sealing steam away from the gland?
• Which station is used to monitor the Deaerating Feed Tank temperatures and pressure?
• Which statement about engineer standing and light-off orders is correct?
• What is the role of the Butterfly Valve in the steam system?
• The Exhaust and Relief Valves (CERV) are designed to relieve turbine exhaust to the Auxiliary Exhaust System when a differential pressure reaches which value?
• What is the rated pressure of the steam main referenced in the desuperheater branch line question?
• Which component is used to return excess condensate to the Reserve Feedwater Tank when high level is indicated?
• Which statement is true regarding the Fresh Water Drain Collecting Tanks when transfer pumps are engaged?
• Who does the watchstander receive orders from and report to?
• Lube Oil (LO) reduces wear and dissipates heat generated throughout the —
• Which equipment reduces the temperature of the auxiliary steam for the 150 psi auxiliary steam system?
• The venturi throat differential pressure is used to determine which parameter?
• Where are the Deaerating Feed Tanks (DFT) temperatures and pressure monitored?
• Feedwater pressure is maintained by which component(s)?
• The High-Pressure (HP) steam drain system collects condensate from steam machinery, equipment, and piping that operates at what amount of pounds per square inch (psi)?
• Which valve is used to connect the auxiliary exhaust system to the main condenser?
• If unsecured, this component can provide the quickest access to the MRG, with no ability to detect intrusion to the most critical areas.
• The Boiler Control Console is located in which station?
• What is the general function of stop and stop-check valves in piping systems?
• Excess gland-sealing steam is unloaded to the LP turbine through which line?
• Which EOS console contains controls and indicators necessary to monitor and manipulate ship boiler operation?
• The desuperheater reducing station is used to lower the temperature of the steam destined for which system?
• The statement 'Lube oil impact on wear and heat generation' is true or false?
• Which valve type is specified for the connection between the auxiliary exhaust and the main condenser?
• What is the purpose of the Gland Seal Regulating Station?
• There are 4 150psi auxiliary steam systems in each machinery room.
• The two MRs have a cross connect between them that goes through what space?
• Radial bearings are generally known as which type?
• Which valve enables steam to flow from the Auxiliary Exhaust Line to the Deaerating Tank when the tank pressure is less than the exhaust line?
• Which of the following is NOT a component of the drain-orifice assembly?
• The Make-Up Valve and the Unloading Valve Configuration are what?
• Which component returns excess condensate to the Reserve Feedwater Tank in response to a high-level indication?
• What type of steam does the Auxiliary exhaust system provide to the distilling plant?
• On the branch to the desuperheater, what does the stop-check valve prevent?
• Which component in the lubrication loop is primarily used to cool the lubricating oil?
• Which valve would you expect between the auxiliary exhaust and the condenser in this system?
• Which of the following is an action of the swash plates?
• The 150-psi supply is drawn from which steam system?
• From which area does the Automatic Combustion Control System not take its measurements?
• The gland seal regulating station includes which elements?
• What component works in conjunction with condensate and the Make-Up Feed (MUF) to maintain the proper quantity of water?
• Why does the emergency feed pump have a service air connection?
• Which statement best describes the relationship between the make-up valve and the unloading valve?
• What is the driving force for feedwater to reach the Deaerating Feed Tank (DFT)?
• Primary Engineering Operational Casualty Control (EOCC) training concentrates on controlling what?
• The sentinel-relief valve lifts at how many pounds per square inch (psi)?
• Where can bulkhead isolation valves be operated from?
• The Automatic Feedwater Control Valve maintains boiler water level at Normal plus/minus 1 inch. This tolerance is described as which option?
• What is the purpose of the external desuperheater?
• In the 600 psi steam system, what path does the auxiliary steam take to service?
• The abbreviation DFT stands for which component?
• (True/False) The Deaerating Feed Tank heats and stores seawater.
• Where do the lube oil pumps take suction from in the propulsion lubrication system?
• How are 600 psi Main Steam and 600 psi Auxiliary Steam different?
• Steam is used for propulsion and to supply power generation turbines, forced draft blowers, and distilling plants. This statement is:
• Which tank is linked with condensate and MUF to ensure proper water quantity?
• What is removed via air ejectors or vacuum pumps from condensers operating under vacuum?
• Which device is used with condensate and MUF to regulate water quantity in the system?
• Which statement about cleaning and inspecting the FO strainer is correct?
• What procedures should be completed on the Ship's Service Turbine Generator (SSTG) strainer?
• Steam is used for propulsion and also to supply power generation turbines, forced draft blowers, and what other system?
• The economizer functions primarily as a preheater for which fluid?
• EOCC stands for which of the following?
• In the Deaerating Feed Tank (DFT), the auxiliary exhaust steam directly contacts which of the following?
• The branch connection to the desuperheater uses which valve to prevent reverse flow?
• To allow steam flow into the Deaerating Tank when needed, which valve is used?
• How does the Dump Valve function in the condensate system?
• In the described feedwater system, what is the final destination for water after leaving the main feed pumps?
• Which component is a spring-loaded, diaphragm-operated valve and actuator that requires steam pressure to close?
• The Auxiliary Exhaust System collects steam from which pump line, classified as a noncondensing turbine-driven pump?
• The gland seal unloading line connects to which turbine stage?
• Which motor-operated valve may be operated locally and for closure on the BCC, the Damage Control (DC) deck, and the boiler front console?
• The term DFT is the acronym for which component?
• In naval propulsion, which equipment is considered critical and typically kept under elaborate security?
• In the Main Machinery Rooms, the identical superheated steam supply is specified at which pressure?
• Which component consists of inlet and outlet isolation valves, a bypass valve, and a pneumatically operated pressure-regulating valve?
• Which component interacts with condensate and MUF to keep the water quantity correct?
• Which of the following is considered a safety device of the Deaerating Feed Tank (DFT)?
• Which statement about bulkhead isolation valve operation is correct?
• In the condensate system, which valve discharges excess condensate back to the reserve feedwater tank?
• Who should repair labyrinth packing?
• Where is the static pressure sensor that measures steam drum pressure located?
• The MUF system processes feedwater from which source before demineralization?
• What functionality do temperature-regulating valves serve in a Lube Oil (LO) system?
• Who shall review the engineer's standing and light-off orders?
• Which engineering equipment has long been subject to elaborate security measures?
• Which component is used to temporarily alleviate high temperatures at the outlet of the superheater?
• Which device senses the hotwell level and controls the feed pump accordingly?
• Where on the ship are the two steam generating systems located?
• Which system provides a means of removing non-condensable gases released during the condensing process?
• The Auxiliary Exhaust System collects steam from which noncondensing turbine-driven pump?
• What is the maximum diameter for main propulsion shafts?
• Which tank is associated with maintaining water quantity when condensate and MUF are present?
• Which element includes a strainer, an orifice plate, gasket, and flanges?
• The maximum diameter for main propulsion shafts is specified in what units?
• The HP Steam Drain System returns condensate suitable for use as boiler feedwater back into the system via which component?
• Where does the water go when it is discharged from the main feed pumps?
• How many articulated locked train gears are used in the high-speed system?
• Which component regulates the pressure of gland-sealing steam to prevent leakage?
• By how many degrees is the overboard temperature higher than the injection temperature?
• Where are the two steam generating systems located on the ship?
• What does the Deaerating Feed Tank (DFT) heat and store?
• The Enclosed Operating Station (EOS) monitors which three aspects of the steam system?
• How many 600/150 reducing stations are in each Main Machinery Room (MMR)?
• Which component has a function that mirrors the make-up valve in basic configuration and operation?
• From which component does the main feed booster pump draw suction to feed water?
• Which component has the same basic configuration and operation as the make-up valve?
• What position should the boiler desuperheater inlet valves be in?
• What sections on the Casualty Response Procedures (CRP) are required to be memorized?
• Normal temperature of Deaerating Feed Tank (DFT)
• Where is the mechanical energy produced by the main engine ultimately used?
• What element allows a pipe to be either fully open or fully closed?
• Which statement about the boiler desuperheater inlet valves is correct?
• What material is typically used to fit inside naval strut bearings?
• Which console contains controls for steam pressure, temperature, and power-operated valve-position indicators?
• Where is the branch line for the desuperheater leakage test sample cooler attached?
• In the condensate handling system, swash plates primarily function to
• Approximately how much hotter is the water that flows out of the economizer into the boiler?
• Which of the following best describes a characteristic of the propulsion reduction gear?
• In the lubrication loop, after pumping, the lube oil passes through which components before reaching the LO header?
• The make-up valve is described as which of the following?
• Which valve has a local position indicator, which means the open or closed position can be verified visually?
• What component energizes and deenergizes the pump to control the hotwell level?
• What are Baffles?
• In an auxiliary exhaust line, which valve type is specified for unloading to the main condenser?
• What type of valve connects the auxiliary exhaust system to the main condenser?
• When should the FO strainer be cleaned and inspected?
• What is measured by a static pressure sensor on the top of the boiler steam drum?
• The condensate returned by the HP Steam Drain System is directed into which tank or system?
• Exhaust and Relief Valves (CERV) open at what differential pressure to relieve turbine exhaust to the Auxiliary Exhaust System?
• The SSTG condensers are part of which seawater circulating system?
• Which component requires inspection to prevent rapid access to critical areas if left unsecured?
• Where are the contents of the Fresh Water Drain Collecting Tanks discharged if transfer pumps are used?
• If there is not enough feedwater available to the Deaerating Feed Tank (DFT), which valve opens?
• Which statement best describes the Non-Condensable Gases Removal System?
• What is measured as a differential pressure drop in the throat of the venturi?
• The EOCC Manual is available to all personnel in which location?
• In condensers operating under vacuum, what is removed by air ejectors or vacuum pumps?
• What is the purpose of the stop valve and stop-check valve in the steam system?
• An articulated-locked train gear uses how many high-speed pinions?
• How many Main Condensers are in the condensate system?
• The desuperheater leakage test sample cooler branch line is associated with which steam main?
• What is the correct order of components in the lubrication loop from the reduction gear sump to the LO header?
• What may be used to temporarily alleviate superheater outlet high temperatures?