AEL01 - Assistant Engineer - Limited

The pressure-volume diagrams illustrated are of four internal combustion engine cycles. Which one represents the theore...

According to the data given in the illustration, which of the following would be the physical state of the fluid at a g...

The pressuretrol which is installed on an auxiliary boiler senses steam pressure changes and __________.

What is meant by the term independent bilge suction?

A flat block placed under the end of a shore for the purpose of distributing pressure is referred to as a __________.

Referring to figure "B" of the illustration, what statement is true? Illustration EL-0020

On the indicator card shown in the illustration, what do lines "A" and "B" indicate? Illustration MO-0108

If a boiler generates saturated steam at 125.3 psig, how much heat is required to change the water into steam if the fe...

A variable capacity, pressure atomizing, fuel oil burner functions to __________.

With regard to a ballast system associated with a dry cargo ship, what is the primary purpose of the fore peak and aft ...

The wooden shoring shown in the illustration is bearing against the hatch coaming and is supporting a load in the direc...

Which of the electrical properties listed will always be the same across each component in a parallel circuit?

On an opposed-piston engine, which of the listed operating conditions will result from increasing the lower crank lead?

In a boiler equipped with a convection type superheater, the superheater tubes are located __________.

The rate of heat transfer in a water-tube auxiliary boiler can be increased by __________.

Aftercoolers are used with air compressors to __________.

An acceptable method of temporarily sealing a crack formed in the hull of a vessel is to __________.

What statement is true concerning the total resistance of a parallel circuit?

The rate of pressure rise during the period following fuel ignition in a diesel engine is influenced by the length of t...

Steam assist fuel atomizers are converted to straight mechanical atomizers in order to __________.

Which of the listed sequence of events occurs when an automatic auxiliary boiler is pre-purged?

Which of the following statements represents the proper procedural sequence for adjusting the metering rate of an in-li...

The wooden plug fitted tightly in the vent of a damaged tank may prevent the tank from __________.

In the schematic of the electrical circuit shown in figure "A" of the illustration, assuming that C1 and C2 are equal i...

In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low-alloy steels because ______...

The advantage of installing waterwall tubes in a boiler furnace is to __________.

The boiler shown in the illustration would be classed as __________. Illustration MO-0064

If a belt-driven reciprocating air compressor is operating at a lower than design displacement capacity (in cubic feet ...

The bypass valve on a self-contained breathing apparatus (SCBA) bypasses __________.

The turns ratio of the tapped step-down transformer shown in figure "C" of the illustration is four to one and all taps...

Valve lash or clearance refers to the __________.

While your vessel is underway at normal speed, a steam drum safety valve develops a significant leak. Your first correc...

The purpose of the separating nozzle in the accumulator of a water-tube, coil-type, steam generator is to separate ____...

In a closed-loop process control system featuring negative feedback, what is the function of the error detector within ...

Which type of respiratory protection is preferable for the repair/investigation personnel in a hydrogen sulfide (H2S) e...

Which of the electrical schematic symbols shown in the illustration represents a normally closed limit switch? Illustra...

Large slow-speed diesel engines have cylinder liners that are manufactured from which of the following materials?

Where is the "dry pipe" located in a boiler?

Downcomers installed on auxiliary package boilers are protected from direct contact with hot gases by __________.

As shown in figure "A" of the illustrated block diagram of a central operating system configured for direct digital con...

You are involved in an emergency landing of a helicopter on the water. You should inflate your life jacket __________.

What is the shape of the schematic symbol for an operational amplifier used in an analog circuit?

The valve stem expansion associated with engine warm-up is allowed for by the __________.

Excessive foaming in a steaming boiler can cause damage to the __________.

In the boiler steam and water system, pressure is highest in the __________.

A dented race in an antifriction bearing could be caused by __________.

The canopy of your life raft should __________.

In figure "1" of the illustration, what type of circuit breaker trip element is featured? Illustration EL-0033

The small end of the connecting rod is attached to the piston with a __________.

The superheater vents should always be open when __________.

A major difference between the two-element and the three-element feedwater regulator control systems, is that a three-e...

For the successful operation of a reverse osmosis freshwater generator, why is the high-pressure pump required to opera...

Which of the following limitations is correct regarding gas masks, otherwise called filter masks?

What practice could potentially damage a multimeter?

One method of constructing large marine diesel engines and reducing the total engine frame weight is through __________...

Water in the fuel supply to a steaming boiler can be detected by __________.

Compared to other types of engines, what is the biggest advantage of a gas turbine engine?

Which of the following freshwater generators has an operating principle that employs the use of a semi- permeable membra...

Which of the following statements is TRUE concerning life jackets?

Many digital multimeters now have a capacitance measurement mode. In the absence of this mode, it is possible to test c...

In a modern two stroke, slow speed, internal combustion diesel engine, what is the part of the engine that houses the c...

The purpose of the mica used in a boiler water gauge glass assembly is to prevent __________.

In a gas turbine, the air charge is permitted to be compressed adiabatically by what factor, process, or condition?

What is the function of device "B" shown in the illustration? Illustration MO-0110

The survival craft engine is fueled with __________.

What is an ohmmeter used to measure?

Component "U" of the diesel engine shown in the illustration is called the __________. Illustration MO-0122

In the absence of the manufacturer's instructions, a good procedure in reassembling a high-pressure boiler gauge glass ...

An open cycle gas turbine engine is best described by which of the following statements?

In the unit illustrated, the feedwater temperature is required to be increased to 165°F or greater and must exist at th...

Kapok life jackets require proper care and should NOT be __________.

To properly use a clamp-on-type ammeter for measuring current accurately, what must be done?

The diesel engine wrist pin in the illustration is indicated by the component labeled __________. Illustration MO-0122

As compared with a typical front fired boiler, which of the listed conditions represents an advantage of a top fired bo...

The acronym GG represents which of the following?

What is the primary purpose of the lead-lag arrangement of the two potable water pumps supporting a typical potable wat...

All of the following are part of the fire triangle EXCEPT __________.

What condition associated with a lead-acid battery cell can cause the plates to partially short-out and cause the cell ...

The diesel engine wrist pin in the illustration is indicated by the component labeled __________. Illustration MO-0122

Scavenging air is supplied to steam sootblower elements to __________.

The gas generating sections of marine gas turbine engines are based on which of the following?

Which of the following speed control devices is used strictly as a safety device to prevent prime mover damage and acts...

Which of the gases listed is the poisonous gas most likely to be found in a closed compartment involved in a fire?

The leads from an ohmmeter are attached to the leads of the opposite ends of an AC induction motor stator coil. If a re...

In the diesel engine shown in the illustration, the purpose of the part labeled "P" is to __________. Illustration MO-0...

If the flue gas oxygen content is too high, you should __________.

The acronym FOD stands for which of the following?

Which of the following provisions for thermal expansion for shell-and-tube heat exchangers only requires a single tube ...

Radiation can cause a fire to spread by __________.

If the cooling water system is isolated for repairs, but in an operational emergency, it is still desirable to run the ...

The service life of a worn aluminum piston for an auxiliary diesel, for which no spares are readily available, can be e...

Which of the following statements represents the function of insulating brick?

Kelvin is the absolute temperature scale that corresponds to which of the following?

With regard to the number of passes through the tubes of shell-and-tube heat exchangers, what statement is true?

The process that occurs when heat is generated by a chemical reaction within a substance and continues to a point of ig...

How can the loss of residual magnetism in an alternator with a brushless excitation system be corrected?

The turbocharged, four-stroke, diesel engines on your vessel are protected with dry-type air intake filters. The engine...

Reaching which "end point" will result in the most severe damage to the boiler?

Thermal energy is the only form of energy that can be added to or removed from a substance. How is thermal energy that ...

A flare-type tubing connector is used in the hydraulic hatch cover system and has developed a slight leak. To stop the ...

The spreading of fire as a result of heat being carried through a vessel's ventilation system, is an example of heat tr...

What is the nominal open-circuit cell voltage of one lead-acid storage battery cell?

An engine that runs rough or expels large amounts of black smoke may indicate a misfiring cylinder. Assume that the aux...

Before blowing tubes in a boiler equipped with steam sootblowers, you should __________.

What is the term given to a process that occurs without a loss or gain of heat?

Both the direction of flow and fluid flow rate of a variable displacement radial piston pump are determined by the rela...

In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by ____________.

According to 46 CFR Subchapter J, what is true concerning the installation of batteries used for diesel engine starting...

Before any auxiliary diesel engine hydraulic starting system is opened for servicing or repair, you must __________.

Which color burner flame would indicate too much excess air?

Under standard atmospheric conditions, 208.7 PSIG converts to approximately what in absolute pressure?

If you attempt to tighten a leaking hydraulic fitting with pressure on the system, you will __________.

When required to work in an area where explosive gases may accumulate, you should use hand tools which are __________.

As shown in the illustration, the wet cell storage batteries are connected in what configuration? Illustration EL- 0071

Hydraulic starters are installed on many lifeboat diesel engines instead of comparable air start systems, because _____...

Before an explosion can occur in a boiler furnace, there must be an accumulation of unburned fuel, sufficient air to fo...

Which of the following terms refers to thermal energy in transition?

The determining factor for the strength of a flexible rubber hydraulic hose is the __________.

Paints and solvents used aboard a vessel should be __________.

Which of the illustrated motors has an open, drip-proof (ODP) motor enclosure? Illustration EL-0001

Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions will be made easier b...

A single element boiler feedwater regulating system used aboard ship utilizes __________.

A compressor is operating at an inlet pressure of 14.7 (atmospheric pressure at the time of measurement) and a compress...

Which characteristic or condition will have the greatest effect on increasing a hydraulic oil's viscosity?

A simple precaution to reduce the possibility of accidental fires in the paint locker, is to __________.

How is the difference between the synchronous speed of a three-phase induction motor and its operating speed correctly ...

Which of the following should always be checked prior to starting a diesel engine?

A two-element boiler feedwater regulator is controlled by __________.

In a gas turbine engine, the majority of the energy is added to the working fluid in which of the following components?

Which of the following types of diesel engine lubricating oil filtration schemes must be equipped with a bypass relief ...

Which of the following procedures reduces the possibility of an interior ventilation duct fire from rapidly spreading?

What type of AC motor would use a rheostat in the rotor circuit to vary the speed of the motor?

Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are __________.

The two-element feedwater regulator functions similarly to the three-element feedwater regulator but does not utilize _...

In the operation of a marine propulsion gas turbine, kinetic and thermal energy required to drive the main propeller sh...

With respect to lubricating oils, what statement is true concerning viscosity and viscosity index?

Recharging a previously used cartridge-operated dry chemical fire extinguisher is accomplished by __________.

As shown in figures "A", "B", "C", and "D" of the illustration, what is the usual means by which the rotation direction...

Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started...

A major difference between the two-element and the three-element feedwater regulator control systems, is that a three-e...

The circle of turbine stationary vanes that convert pressure and thermal energy to velocity energy and direct the combu...

In a forced-feed lubrication system, what statement is true concerning lube oil reservoir/sump residence time?

The source of power for the CO2 discharge alarm siren is obtained from __________.

Which of the listed motors will operate at the highest RPM, assuming that each operates at the same frequency?

The lube oil strainer shown in the illustration is used on the reduction gear of a mid-size diesel engine. The strainer...

A triple element, main propulsion, boiler feedwater regulating system commonly used aboard ship utilizes __________.

What is the purpose of the spring in a lip-type oil seal?

What effect does preheating, concurrent heating, or post heating have on welding a joint?

When compared to other fire extinguishing agents, water fog __________.

Which of the following illustrated manual motor starters represents the wiring diagram illustrated in figure "A"? Illus...

Which of the following statements is true concerning the cetane number of diesel fuel?

Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity?

Which of the following is the main advantage of a split-axial compressor case?

In order to facilitate separation of oil from an oily-water mixture in an oily-water separator, what statement is true ...

When using foam, a "Class B" fire is extinguished by __________.

As shown in the illustrated feeder disconnect controller, what statement is true? Illustration EL-0138

Which of the listed substances can be satisfactorily removed from diesel fuel by centrifuging?

Excessively hot water returning to an atmospheric drain tank indicates __________.

What are the two principal functions of the turbine nozzle guide vanes?

The components indicated as "7" and "8" as shown in the illustration, are known as the __________. Illustration GS-0153

A low velocity fog applicator is retained in an all-purpose nozzle by a bayonet joint. The applicator is prevented from...

Of the listed factors that influence the magnitude of the voltage induced in the stator windings of an AC generator ope...

In the illustration provided, which label indicates the wear liner? Illustration MO-0112

Under normal conditions, the rate of heat transfer in a feedwater heater is most greatly affected by the __________.

A centrifugal compressor assembly consists of which of the following?

In the illustrated self-contained, internal-pilot, piston-operated steam pressure-reducing valve, what statement is tru...

Fire hoses located at protected fire stations must always be __________.

Which of the following pictures shown in the illustration is a control transformer, usually used to step down line volt...

To minimize corrosion, what are fuel oil strainer disks, spacers and scraper blades made of?

Which statement listed represents a vital function of the main condenser?

The turbine nozzle blades convert the combustion gases heat and pressure energy into what form of energy?

Suppose the illustrated self-contained, internal-pilot, piston-operated temperature control valve is part of the temper...

Which fire extinguisher is most prone to freezing when stowed in low temperatures?

In which of the following branch circuits types would time lag fuses (or dual-element fuses) be MOST likely used?

Because of the close tolerances used in diesel engine fuel oil pumps, a worn plunger requires __________.

Which of the following actions should be taken FIRST when water is found in the fuel oil settling tank?

Turbine disks are commonly attached to the shaft by which of the following methods?

A 'centerline' depicted in a drawing or blueprint is represented by which of the figures shown in the illustration? Ill...

Annual servicing of a hand portable CO2 fire extinguisher includes __________.

A thermal-magnetic molded case circuit breaker for a 300 kW alternator is rated at 500 amperes at full continuous load....

As shown in the illustration of the fuel injection pump, the component labeled "N" would be identified as the _________...

The minimum temperature requirements for fuel oil in storage tanks is related to the _________.

To keep the exit pressures relatively constant across a HP turbine blade, which type of construction is generally utili...

What statement is true concerning the arrangement of line shaft bearing housings?

In a cartridge-operated dry chemical type fire extinguisher, when the CO2 cartridge is activated, the dry chemical is r...

The transformer diagram shown in figure "B" of the illustration represents what type of transformer? Illustration EL-00...

What is the primary purpose of a fuel injection system, besides metering and atomizing fuel?

Which characteristic of fuel oil is the most significant when determining the temperature to which the fuel oil must be...

While air is being compressed in a centrifugal flow gas turbine, what happens to the direction of air flow?

Concerning transverse fixed tunnel thrusters, what statement is true?

Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?

How are fuses usually rated?

Fuel injector nozzles are usually of the multi-orifice type with the number and placement of the holes arranged accordi...

Insufficient combustion air supply will cause an atomizer flame to appear as a __________.

Aboard ship, single-shaft gas turbines are used mostly as prime movers for which of the following applications?

Which of the following propulsor types represents the proper terminology for electric propulsion where the drive motors...

In firefighting, the term "protecting exposures" means __________.

The timer element of a reverse power relay cannot be energized unless what condition is met?

What is the purpose of the delivery check valve used in a diesel fuel injection jerk pump?

Fuel oil solenoid valves at the burner fronts should be of the manual reset type to __________.

What type of air seal is used in the combustor and turbine midframe of a gas turbine?

The primary function of a centrifugal pump volute is to __________.

Which extinguishing agent is the best for use on electrical fires?

Which of the substances listed can be used to shield sensitive equipment from static magnetic fields?

The component shown in the illustration would be identified as a/an __________. Illustration MO-0097

Compared to the return flow oil burner system, an internally mixed steam atomizer requires __________.

An axial compressor basically consists of which of the following?

Mechanical shaft seals used on water service pumps require lubrication of the seal faces to minimize deposits of foreig...

The longer an oil fire is permitted to burn, the __________.

In referring to the frequency response filters shown in the illustration, what determines the band pass or band stop fr...

In the illustration shown, under what conditions would valves "2" and "3" be closed and valve "6" be opened? Illustrati...

The last two digits stamped on a fuel oil atomizer sprayer plate represents the cross-sectional area ratios of the tang...

What is the term used to describe the stationary vanes preceding the first stage of an axial compressor?

Air leakage between the shaft and stuffing box packing in a centrifugal pump is prevented by __________.

When fighting a shipboard fire, crew members securing doorways, hatches, and applying cooling water to adjacent decks a...

As shown in all three diagrams included in the illustration, what type of logic circuit is represented? Illustration EL...

In a naturally aspirated diesel engine, the volume of air intake is directly associated with engine __________.

A pressure drop occurs across both the moving and fixed blades of a reaction turbine as a result of the __________.

Variable stator vanes give an axial gas turbine compressor which of the following capabilities?

What should be done if localized scoring is discovered on a pump shaft sleeve during routine maintenance inspection?

You are in compartment "A" as shown in Figure 2 of the illustration, and suspect there is a fire in compartment "B". In...

Referring to figure "2" of the illustration, if the inputs at A and B are both "0", what will be the outputs at "C", "D...

An increase in the air inlet manifold pressure of a diesel engine will result in a/an __________.

In an impulse turbine, the fixed blades function to __________.

A centrifugal flow gas turbine uses what type of combustion chamber?

To prevent overheating and scoring of the shaft after repacking the stuffing box, which of the following procedures sho...

If a fire occurs in an electric cable, in which the inner layers of insulation, or the insulation covered by armor is b...

Which of the wave shapes shown in the illustration is termed a sinusoidal wave? Illustration EL-0088

Compared to a naturally aspirated diesel engine, a supercharged diesel engine has __________.

When a turbine is in operation, a rotor position micrometer is used to determine any change in rotor __________.

An axial compressor stage is represented by which of the following components and in which order?

The function of the section labeled "C" in the device illustrated is to provide a/an __________. Illustration GS- 0075

When required to work in an area where explosive gases may accumulate, you should use tools which are __________.

In referring to figure "A" of the illustration, what type of active filter circuit is shown? Illustration EL-0077

A water jacket is placed around the exhaust manifolds of propulsion diesel engines to __________.

The astern element of a main propulsion turbine is usually designed as a __________.

What is the primary function of an axial compressor rotor blade?

A vessel is in compliance with federal regulations regarding the discharge of sewage by __________.

The reading of a combustible gas indicator indicates the percentage of the __________.

Referring to figure "2" of the illustration, what type of logic gate is symbolized? Illustration EL-0035

In a diesel engine exhaust system, the cooling of the exhaust gases below their dew point, will result in __________.

The jacking/turning gear mechanism of a main propulsion geared turbine installation is normally connected through mecha...

Which of the following terms refers to axial compressor stator blades?

If oil under pressure is supplied to the area identified as "N" in the illustration, what will occur? Illustration GS- 0...

Before entering any space that has been sealed, its oxygen level should be tested. What level of oxygen in the space is...

Which line in figure "B" shown in the illustration represents the trailing edge of the wave? Illustration EL-0088

What would be considered a normal temperature increase between the inlet and outlet jacket cooling water of a medium or...

In securing the main turbines, steam to the second stage air ejectors should be left on for a short period of time in o...

In the ignition system of a gas turbine engine, how is optimum spark achieved?

When responding to a "right rudder" command from the amidships position, which part/parts of the steering cylinders ill...

An oxygen indicator will detect __________.

Ships requiring extremely rapid maneuvering response using propeller shaft speed and direction as the sole means of con...

In the engine shown in the illustration, the part labeled "W" is cooled by __________. Illustration MO-0003

The original bridge gauge reading for a reduction gear bearing was measured as 0.008 inches. A year later, the bridge g...

On the marine gas turbine engine shown in the illustration, the 8th stage bleed air is used for which of the following?...

If Boyles' law describes the relationship between the pressure and volume of ideal gases, what statement is true?

The airborne concentrations of substances (such as hydrogen sulfide) under which nearly all workers may be repeatedly e...

While standing an "at sea watch" onboard an AC diesel-electric drive ship with a synchronous propulsion motor with the ...

The expansion tank for a diesel engine closed cooling system is designed to maintain a constant head on the system and ...

Operating a steam turbine propulsion unit at medium-speed, in an area with extremely cold sea water and the main circul...

The lube oil scavenge pressure on the gas turbine engine shown in the illustration is sensed by which of the following?...

What statement represents the ideal gas law?

If you see an individual fall overboard, what is the FIRST thing you should do?

What statement is TRUE concerning podded azimuthing propulsors?

Due to environmental and safety concerns, the diesel engine cooling water system on your vessel is treated with propyle...

For a large main propulsion turbine, the most commonly used turbine thrust bearing is the __________.

The main lubrication system utilized by the gas turbine engine shown in the illustration is what type? Illustration GT-...

In the illustrated terminal reheat multiple zone system, what statement represents the functioning of the supply air du...

A specific document which identifies a chemical, and lists its physical properties, health hazards, required controls, ...

In a podded azimuthing propulsion system, how is three-phase, frequency and voltage-controlled power delivered to the s...

What is the function of the after coolers installed in the diesel engine air intake system?

The main propulsion shaft turning gear usually connects to the free end of the high-speed high-pressure pinion because ...

How is the lube oil supplied to each bearing in a gas turbine engine controlled?

Which of the following guidelines is considered to reflect good design practices for shipboard steam heating systems?

An LNG carrier has an approved type of gas detecting system to detect methane leaks. What area(s) would this be NOT use...

By what common means is the speed of an AC propulsion motor on a diesel-electric propulsion ship controlled?

Which of the designs listed will keep the lobes from making contact in a Roots-type blower?

Labyrinth seals are used on rotating steam turbine shafts to reduce external leakage. How is this accomplished?

Gas turbine fuel manifold pressure is established by which of the following actions?

In accordance with international MARPOL Annex I regulations and federal regulations under 33 CFR Subchapter O (Pollutio...

A health hazard term listed on a Safety Data Sheet (SDS) that indicates allergic-like reaction in some people after rep...

In order for a live-line tester to be used to test and prove dead a high voltage circuit, what must be done to verify t...

In a Roots-type rotary blower, the volume of air delivered is directly proportional to __________.

Before placing the jacking gear in operation on a main turbine unit, you must always ensure that __________.

The bleed air surge relief valve differs from a normal relief valve in which of the following ways?

In examining a baseline vibration signature and the historical record of periodic vibration analyses, what must be cons...

If, in a compartment or space, the gas or oxygen content is not within permissible concentration, and dangerous gases a...

In addition to high voltage circuit grounding with ground-connecting switching devices, for additional operator safety ...

The process of scavenging a two-stroke cycle diesel engine serves to __________.

Labyrinth seals used to reduce leakage around a turbine shaft are constructed of __________.

What is the purpose of the Controllable-Pitch Propeller (CPP) hydraulic oil power system?

Which of the devices shown in the illustration is designed for both inside and outside measurements? Illustration GS-00...

Which of the petroleum products listed has a flash point below 150°F?

Of the following, what shipboard system is MOST likely to use the synchronous transmission system featuring a transmitt...

Clutching takes place nearest the bearing shown in the illustration, located at number _____. Illustration MO- 0086

Which of the following statements describes how the main propulsion turbine overspeed relay initiates closing of the th...

How do you manually lockout an SSS clutch?

Which of the drill sets listed would commonly be referred to as a “Jobbers Set”?

The vapors given off by heated fuel oil are flammable, explosive, and __________.

A salinity indicator system such as that used to measure the salt content of potable water systems and boiler feed and ...

When installing the bearing cap on the device shown in the illustration, which of the precautions listed must be observ...

Which of the following statements represents the significance of the differential pressure existing between the nozzle ...

Which of the following statements is true about the "lockout control" on a synchronous self-shifting (SSS) clutch?

The lathe tools shown as figure "M" in the illustration are commonly known as __________. Illustration GS- 0090

A tank or compartment is "gas free" when there is an absence of dangerous concentrations of __________.

What statement is true concerning read only memory (ROM)?

Which of the types of reduction gearing listed is best suited for medium-speed main propulsion units?

Which of the following is used to hold the poppet valves closed in a turbo-generators nozzle control speed regulator?

What type of main reduction gear arrangement prevents independent axial and rotational movement of the pinions?

If an oil-in-water content monitor uses a lamp emitting light in the visible spectra in conjunction with a reference ph...

Tankers carrying cryogenic cargoes, such as LNG, are fitted with gas detector systems which are designed to activate an...

Modern ships use multiple computers arranged in a client/server network to perform various shipboard functions. What ty...

Reduction gear casings are vented in order to __________.

To test an automatic low lube oil pressure trip on an idling turbogenerator and at the same time prevent the chance of ...

Rotation of the controllable-pitch propeller (CPP) blades is achieved through axial movement of what component in the h...

As it pertains to the automatic electric brake of a horizontal electro-mechanical anchor windlass, what statement is tr...

In accordance with 33 CFR Subchapter O (Pollution), which of the following is a mandatory section of the shipboard oil ...

What type of motor is used in the AC hoist controller as shown in the illustration? Illustration EL-0102

The main engine thrust bearing shown in the illustration contains how many thrust shoes? Illustration MO- 0121

As the speed of an oil lubricated ball bearing increases, fluid friction, due to churning, generates heat. This conditi...

Which of the following is the principle that a magnetic speed sensor/pickup operates on?

When accomplishing welding repairs using the electric arc welding process, what statement is true concerning the charac...

When the scuppers are plugged and an oil spill occurs on deck, you should __________.

In the event of a power failure during cargo loading operations, the movement of an electric powered cargo winch will b...

The main engines on your vessel are fitted with speed control governors based on the operating principle shown in the i...

In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from th...

Accelerometers are generally used on gas turbine engines to sense which of the following?

What statement is true concerning the construction of watertight bulkheads?

When should you expect to find an insulating flange in a fueling hose?

Referring to the illustration pertaining to an alternator protection and alarm system, what statement is true concernin...

The most common contaminate of governor hydraulic fluid is __________.

During high-speed operation of the main turbine propulsion unit, the heat absorbed by the lubricating oil is removed by...

Compressor characteristics are normally summarized in the form of which of the following?

While in dry-dock, what means are provided for completely draining the double bottom tanks in preparation for inspectio...

In accordance with 33 CFR Subchapter O (Pollution), where will you find the procedures for the reporting of oil dischar...

In an impressed current cathodic hull protection system, what statement is true concerning the composition and arrangem...

Which of the following conditions could cause the feed pump for an auxiliary boiler to lose suction?

Magnets are installed in the main propulsion turbine lube oil strainers to attract metal particles released through wea...

Which of the following wrenches should NOT be used while working on a gas turbine?

Even though bilge keels do provide some improvement in longitudinal strength at the bilge radius, what is the primary p...

Victual waste is __________.

Which of the listed conditions occur when selection is made for "third point hoist" on the winch hoist controller shown...

The correct procedure for giving an auxiliary boiler a bottom blow, is to begin __________.

To assure the main propulsion turbine bearings are receiving the proper lube oil supply, you should check the _________...

When conducting a borescope inspection, you must be aware of all of the following factors EXCEPT which?

On a ship with a continuously manned engine room, with a three-person watch rotation, what is the watch and rest period...

In accordance with 33 CFR Subchapter O (Pollution), a shipboard oil pollution emergency plan is required to be reviewed...

Before any work on electrical or electronic equipment is performed, which of the following precautions should be carrie...

Large steam drums are not required in the design of a coil-type auxiliary water-tube boiler because __________.

Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass?

Which of the following instruments is designed to help you when performing an internal inspection of the gas turbine en...

Which of the following refrigerants is normally classified as a low-pressure refrigerant based on a relatively high boi...

To determine if all requirements of the Declaration of Inspection are met for oil transfer operations just prior to bun...

A low voltage, high current testing unit consisting of an autotransformer, ammeter, and timer may be used to test the p...

Which of the following statements describes pertinent criteria for performing a surface blow for the purposes of removi...

The term "separation" as used in oil purification refers to the removal of __________.

Wrenches that are recommended for use on gas turbine engines should be plated with which of the following elements?

What is the physical state and pressure condition of refrigerant as it leaves a receiver in a typical refrigeration sys...

In cleaning up an oil spill, the use of straw or reclaimed paper fibers would be an example of which type of oil remova...

Why are electric strip heaters used in motor controllers?

A variable capacity, pressure atomizing, fuel oil burner functions to __________.

According to the illustration, what is the normal function of the component shown? Illustration SE-0010

Compressor surge is caused by which of the following factors?

The safety heads of most large reciprocating compressors used in refrigeration systems are held in place by what means?

What is the usual effect of moving weight from low in the vessel to above the main deck?

What would be the indication of a grounded switch or cable as measured by a megohmmeter?

A photoelectric cell installed in an automatically fired auxiliary boiler burner management system __________.

Chamfers, located at the parting edges of horizontal split sleeve type bearings, are used to facilitate oil storage and...

On a propulsion marine gas turbine, if full power temperatures become excessive, what action should the operator take?

During operating periods of a multi-box refrigeration system using a capacity-controlled compressor, when all of the ev...

Symbol number "3" shown in the illustration represents which of the following? Illustration SF-0022

You are replacing a three-phase induction motor in an application where equipment could be damaged if the direction of ...

The boiler shown in the illustration would be classed as __________. Illustration MO-0064

The most practical method of determining the condition of a shaft bearing while the shaft is in operation is to _______...

What is the term given to the condition in which cyclic pressure changes result in a repetitive failure and recovery of...

Given that valve "14" is the king solenoid valve, which of the following statements is true? Illustration RA-0012

Increasing the free surface of a confined liquid has the effect of raising the __________.

Large machines undergoing a resistance insulation testing using a megohmmeter should be discharged to remove any accumu...

The primary function of a flame safeguard system, as used on an automatically fired auxiliary boiler, is to prevent wha...

Which of the following operational practices is helpful in avoiding the accumulation of condensate in the main reductio...

When a compressor is in a stall condition, what will happen to the combustor and turbine temperatures?

In a refrigeration system, the valve shown in the illustration is used for what purpose? Illustration RA-0014

In the absence of external forces, adding weight to one side of a floating vessel, will cause the vessel to __________.

When a fluorescent lamp has reached the end of its useful life, it should be replaced immediately. If not, what conditi...

If the water level as indicated by the gauge glass of an auxiliary boiler is in question, it should be blown down. Whic...

As found in a reduction gear drive system, thrust bearings serve to __________.

How is the HP turbine rotor of the GE LM2500 gas turbine cooled?

In a refrigeration system, what component is installed directly downstream of the thermal expansion valve?

Stability is determined principally by the relationship of the center of gravity and the __________.

Which of the listed battery charging circuits is used to maintain a wet cell, lead-acid, storage battery in a fully cha...

When vapor is in contact with and remains at the same temperature as the boiling liquid from which it was generated, th...

In the diagrammatic arrangement of the thrust bearing, shown in the illustration, the direction of shaft rotation and th...

Which of the following statements is true concerning the fuel oil ignition system of the gas turbine engine shown in th...

In a refrigeration system, the bulb for the thermal expansion valve is always located where?

You may improve a vessel's stability by __________.

What is the best method of determining the state of charge of a flooded lead-acid storage battery?

While warming up the main engines on your vessel at the pier, one of the main engines suddenly sounds the low lube oil ...

Auxiliary steam at full operating pressure is supplied from the boiler directly to the __________.

What is the primary purpose of the diffuser and distributor on the GE LM2500 gas turbine?

In a refrigeration system, the push-pull technique can be used for the recovery of the refrigerant in what state?

With no environmental forces acting on the vessel, the center of gravity of an inclined vessel is vertically aligned wit...

When an alternator is to remain idle for even a few days, what should be ensured or manually accomplished?

Which of the listed conditions could result in the failure of an auxiliary diesel engine to stop running when a normal ...

According to the illustration, what actuates the bellows "I" in the gland seal regulator? Illustration SE-0019

For the GE LM2500 gas turbine shown in the illustration, the 9th stage bleed air is used for which of the following? Ill...

The amount of HCFC-123 in a storage cylinder is measured by what means?

The horizontal fore and aft movement of a vessel is called __________.

If it becomes absolutely necessary to run an alternator at lower than 5% below its rated frequency, in terms of output ...

After a main diesel engine on your vessel has experienced a safety shutdown due to excessive crank-case pressure, why is...

The primary source of steam to the auxiliary exhaust system is typically supplied directly from __________.

What is the primary function of the main fuel control on the GE LM2500 gas turbine engine?

In general, the thermal bulb for a thermal expansion valve used in a reciprocating air conditioning system is usually c...

In accordance with 33 CFR Subchapter O, which of the following is NOT a MARPOL, Annex V, special area?

Contact with any energized electrical system conductor is potentially hazardous and precautions should be taken to prev...

An auxiliary diesel engine on your vessel has experienced a safety shutdown due to high lubricating oil temperature. Wha...

A contaminated steam generator is used to produce saturated vapor from collected __________.

In order to get a ready indication for a normal start with a GE LM2500 gas turbine engine, what permissive(s) must be me...

The introduction of outside air to the air conditioning system is 90°F with a relative humidity of 60%. The air has been...

In accordance with MARPOL (33 CFR Subchapter O), the definition of medical waste does NOT include which of the following...

Which of the following voltage testers would be associated with high quality, be safe to use, and minimize the electric ...