DDE01 - Designated Duty Engineer - Unlimited HP

You are assigned to a river push boat fitted with main propulsion diesel engines operating on the cycle represented in ...

Which type of energy conversion is associated with an operating steam boiler?

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

Which of the devices listed would be safe to use in a compartment with insufficient oxygen?

What is meant by the term emergency bilge suction?

In a series circuit, what is the applied voltage (or sum of the applied voltages) equal to?

Prior to starting a main propulsion diesel engine fitted on your salvage tug, it has been determined that the transfer ...

The best conductor of heat in a marine boiler is __________.

The thermal energy added to the gas as it flows through the combustion section has what effect on the gas?

Which of the components listed are interchangeable between different backpack self-contained breathing apparatus produc...

Which of the following compressors would be used for a dead ship start-up of a ship's service diesel- generator on a mot...

As shown in figure "A" of the illustration, with the switch closed what statement is true if "R1" and "R2" have unequal...

When checking the cylinder jacket water cooling expansion tank level on a main propulsion diesel engine on your towing ...

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

Why is a gas turbine considered to operate on the Brayton cycle?

One of the main concerns when fighting a galley fire is __________.

Which of the following statements represents the proper criteria to decide when to drain a filter/moisture separator as...

In the illustration, 1, 2, 3 and 4 are 12-volt batteries. What will be the nominal voltage as read by a voltmeter acros...

You are on a river towboat using main propulsion engines of the type shown in the illustration. What statement represen...

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

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

When fighting a liquefied natural gas fire, you should __________.

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

As shown in figure "6" of the illustration, what does the symbol represent as used in electrical drawings? Illustration...

You are analyzing the data used for trend analysis for a two-stroke main propulsion diesel engine on your river push bo...

Which of the following statements concerning fire-tube boilers is correct?

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

Your ship has run aground, and it is necessary to determine whether or not a compartment has flooded. Therefore, you sh...

Which of the following liquid level sensors would be most suitable for measuring the liquid level in a pressure vessel,...

What type of electrical diagram for the electrical distribution system is shown in the illustration? Illustration EL- 00...

Prior to starting a diesel generator set engine fitted on your salvage tug, it has been determined that the transfer of...

A boiler pressuretrol senses steam pressure changes and __________.

The acronym CDP stands for which of the following?

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

Which of the freshwater generators listed below is operated without a source of heat?

As shown in the illustrated devices and symbols, which of the symbols shown in the illustration represents a standard n...

You have just replaced a mechanically operated unit injector on a two-stroke cycle auxiliary diesel engine's #1 cylinde...

A photoelectric cell installed in a boiler burner management system __________.

The acronym FOD stands for which of the following?

Which of the methods shown in the illustration is the correct way to fit shoring? Illustration SF-0016

Which of the following roller bearing types would be limited to radial thrust load applications?

What statement is true concerning the electrical diagrams for the motor controller shown in the illustration? Illustrat...

An engine that emits black smoke through the stack may indicate a misfiring cylinder. Assume that the auxiliary diesel ...

Bi-color water level indicators, connected directly to the boiler drum, operate on the principle of __________.

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

Your vessel has run aground and upon taking fuel oil tank soundings, you find that a fuel tank level has increased. You...

What is the primary indication of a grease lubricated bearing that is over-lubricated in terms of the quantity of greas...

Which figure shown in the illustration represents the schematic symbol shown in figure "2"? Illustration EL- 0034

An auxiliary diesel engine on your towboat is equipped with an electric starting motor such as is shown in the illustra...

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

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

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

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

What is an ammeter used to measure?

The main propulsion diesel engines used to power the ship-docking tug to which you are assigned are started with vane-t...

A boiler safety valve must be capable of __________.

A temperature of 32.5 degrees Celsius converts to approximately what temperature in degrees Kelvin?

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

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

When configuring a digital multimeter as an ohmmeter, what will MOST likely be displayed on the screen when the test le...

The main engines on your harbor tug utilize a starting system with two air-start motors similar to that shown in the il...

Which of the listed types of safety valves is shown in the illustration? Illustration SG-0018

A temperature of 69.5 degrees Fahrenheit converts to approximately what temperature in degrees Rankine?

An immersion suit should be equipped with a/an __________.

According to the illustration, which of the following conditions would most likely cause pump "A" to short cycle? Illus...

When a battery-operated megohmmeter (insulation tester) is used to perform a dielectric absorption test, the resistance...

A diesel generator set on your salvage tug has a simplex lube oil strainer of the type shown in the illustration, situa...

A corbel is used in a boiler furnace to __________.

A centrifugal compressor assembly consists of which of the following?

The hand brake of a lifeboat winch is __________.

Suppose a prime mover rotates at a steady speed of 900 rpm at rated full load and rotates at a steady speed of 1000 rpm...

When troubleshooting a lead-acid storage battery, what is the best method for detecting a weak or dead cell?

When interpreting the engine lube oil supply header pressures for the main engines on your river push boat, what statem...

Boiler refractory previously baked out and fired is most sensitive to __________.

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

In heavy seas the helmsman should steer the survival craft __________.

If a heat exchanger is designed to condense refrigerant vapor using central cooling fresh water as a condensing medium,...

As the electrolyte level in the cells of a lead-acid battery evaporates over time, what will tend to happen to the spec...

The diesel fuels burned in auxiliary and main diesel engines of tugboats operating in harbor areas are required to meet...

As the percentage of CO2 in the stack gas decreases, you can assume that __________.

The purpose of the metal spray rub coating on the rotor and stator casing of an axial type compressor is which of the f...

The survival craft engine is fueled with __________.

When placing a shell-and-tube heat exchanger with a non-removable tube bundle such as a lube oil cooler with fixed tube...

As shown in the illustrated diagnostic setup for locating a shorted field coil of a ten-pole synchronous motor, if 240 ...

The main engines on the harbor tug to which you are assigned are fitted with duplex secondary spin-on fuel filters. Con...

Many steam plants are designed so that diesel oil can be provided to the burners when __________.

Each stage of an axial compressor of a gas turbine can compress the atmospheric air a total of how many times?

When personnel are lifted by a helicopter from an inflatable life raft, the personnel on the raft should __________.

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

Grounds occurring in electrical machinery as a result of insulation failure may result from deterioration over time and...

The manufacturer of the diesel generator set drive engines used aboard your ship-docking tug recommends that no more th...

When raising steam on a cold boiler under normal conditions, you should always __________.

What is the function of the stator in an axial gas turbine compressor?

The canopy of your life raft should __________.

For the various sizes of tubing and wall thickness used in a hydraulic system, the inside diameter can be determined if...

The motor of the illustrated motor controller fails to start on an attempted startup. You ensure the motor has not trip...

The harbor tug to which you are assigned has diesel generators fitted with injectors with the operating principle as sh...

Which of the following is the best reason for opening the air cock when draining a water-tube boiler?

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

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

A hydraulic system flow control circuit is shown in the illustration and is known as a __________. Illustration GS-0105

What can be the cause of excessive heat or burning contacts in an operating motor controller?

The river push boat to which you are assigned has diesel generators fitted with fuel injectors with the operating princ...

Before using a boiler compressed air soot blower system, you should __________.

Two functions of the compressor stator vanes include which of the following?

The most likely location for a liquid cargo fire to occur on a tanker would be __________.

Which of the listed pressure control valves would be used to permit the completion of one action of a hydraulic system ...

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

The main propulsion diesel engines on your ship-docking tug are fitted with conventional hydraulically operated injecto...

A hole should be made in the sagged tube occurring in a water-tube boiler, prior to plugging the tube to prevent a ____...

Which of the following statements is true concerning axial compressor disk-type rotors?

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

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

Suppose an ungrounded 3-phase distribution system is fitted with a lamp-type ground detecting circuit with 3 lamps. If ...

You suspect that a diesel generator set on your river push boat has a misfiring cylinder because the engine, although w...

If while filling the boiler a newly installed gasket on a water-tube hand-hole plate weeps, you should __________.

Why are loose-fitting blades used on the first several stages of large axial compressors?

The blocking open or absence of fire dampers can contribute to __________.

In which lubrication application is a lubricating oil with an alkaline reserve most likely to be used?

Which of the procedures or conditions listed could result in damaging a transistor beyond repair?

The salvage tug to which you are assigned has main engines fitted with intake and exhaust systems as shown in the illus...

To make temporary emergency repairs to brickwork in a boiler furnace, which of the materials listed should be used?

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

To prevent the spread of fire by convection you should __________.

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

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

The diesel engines on your towing vessel are all protected with dry-type air filters. The air filters should be inspect...

To prevent a small plastic refractory wall patch repair from falling into the furnace of a boiler, you should _________...

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

Radiation can cause a fire to spread by __________.

What type of diesel engine lubricating oil filtration scheme filters a small portion of the output of the lubricating o...

What is the most reliable and preferred method for determining the state of charge of a wet cell NiCad battery while it...

In order to determine the restriction across a dry-type air filter on one of the diesel engines on your ship- docking tu...

Which procedure should be followed to dry out the fireside of a boiler after water washing?

The three most common types of combustors used in gas turbine engines are which of the following?

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

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

Which statement is true concerning a split-phase induction motor?

What statement is true concerning the primary purpose of an exhaust muffler/silencer fitted on the exhaust system for a...

The boiler water gauge glasses should be blown down __________.

How do the high-velocity high-temperature gases cause the gas turbine rotor to rotate?

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

What type of oil as part of an oily-water mixture is most likely to require heating to facilitate separation in an oily...

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

Wire brushing and scraping can be used to remove hard carbon deposits from exhaust system surfaces. When cleaning exhau...

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

The turbine nozzles convert heat and pressure energy to velocity energy by means of which of the following?

The upper explosive limit (UEL) of a mixture of flammable vapors and air is defined as __________.

The function of item "7" shown in the illustration is to __________. Illustration GS-0153

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

A main propulsion diesel engine on your towing vessel produces gray to black smoke under virtually all load conditions ...

Which color burner flame would indicate too much excess air?

What method is utilized to allow turbine nozzle blades to withstand high inlet temperatures?

Fire detecting systems on merchant vessels may be arranged to sense __________.

Referring to the illustration, suppose after initiating the oil discharge mode, the oily-water separator fails to come ...

What is the characteristic of a wound-rotor induction motor, with a high resistance inserted in series with the rotor w...

You are replacing an automotive type cooling water thermostat on one of the diesel generator sets on your ship docking ...

Oil accumulation in boiler water would __________.

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

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

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

Assuming that a three-phase synchronous motor is separately excited, what statement is true concerning power supplies?

The freshwater cooling systems serving the main engines on your harbor tug are arranged as shown in the illustration. I...

Boiler tube failures can result from __________.

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

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

Referring to the illustrated pneumatically operated diaphragm actuated control valve, what statement is true? Illustrat...

From the instant of start-up, through the acceleration period, and until the motor reaches rated speed, when is the cou...

In comparison to a naturally aspirated 4-stroke cycle engine, what characteristics are associated with turbocharging?

The most troublesome corrosive substances in boiler water are oxygen and __________.

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

A hand portable CO2 fire extinguisher is effective on burning oil only __________.

In the illustration, line "D" is a/an __________. Illustration GS-0006

Which of the following statements represents the main difference between an electromagnetic relay and an electromagneti...

The two-stroke cycle main propulsion engines on the harbor tug to which you are assigned are fitted with turbochargers ...

Normally a boiler water sample should be taken __________.

Which of the following is an advantage of a single-shaft gas turbine engine compared to a split-shaft gas turbine engin...

Which of the following statements is true concerning the fire extinguisher shown in the illustration? Illustration SF-0...

What is the distance between the center of the discharge outlet and the top of the motor illustrated? Illustration GS-0...

What is the function of the movable cams in a master-switch winch motor drum controller?

You are inspecting the blower of a Roots-blown, two-stroke cycle main propulsion engine on the ocean-going tug to which...

In the prevention of moisture carryover from a marine boiler, one important consideration is to __________.

What type of seal is used in the gearbox of a gas turbine engine?

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

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

Which of the following pictures represents a magnetic reversing or two-speed motor starter? Illustration EL- 0179

The lubricating oil system supporting the main propulsion reduction gear on the ship-docking tug to which you are assig...

The BTU value of fuel oil is determined by a/an __________.

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

A high velocity fog nozzle will produce the most effective spray pattern when the water pressure is not less than _____...

Which of the listed reduction gear sets has the input and output shafts in-line with one another?

Which of the following statements about a three-phase wye connected alternator is correct?

The escort tug to which you are assigned is fitted with hydraulic clutches similar to that shown in the illustration. I...

The property of a fuel oil which is a measurement of its available energy, is known as its __________.

What is the purpose of the air/oil separator shown in the illustration of the gas turbine lube oil system? Illustration...

The device shown in the illustration is carried aboard tankships for __________. Illustration SF-0028

Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by __________.

Which pair of safety disconnect switches shown in the illustration represents the exterior and interior views of a doub...

The main engines on your harbor tug are equipped with over speed trip devices as shown in the illustration. By what met...

In terms of the completeness of combustion, in viewing the flame through the peephole, what would be the indication of ...

What type of starter is commonly used on smaller gas turbine engines?

During cargo operations, a deck fire has occurred due to a leaking cargo line. You should FIRST __________.

A pump shaft that is bent or distorted should normally be __________.

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

The main engines on your harbor tug are protected with a low crankcase oil level detector protective device designed to...

Control of the fuel oil metering valve in an automatically fired boiler is accomplished by a __________.

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

The most effective method of extinguishing a class "A" fire is by __________.

Assuming that a standard micrometer (without a Vernier scale) has the ability to read to the nearest one thousandths of...

What is the basic similarity between a circuit breaker and a fuse?

The rated speed of the main propulsion diesel engines on your towing vessel is 900 rpm. The installed centrifugal over ...

The solenoid valves in the fuel oil supply line to a boiler are automatically closed by __________.

When the main reduction gear lube oil system is secured, which of the following components maintains the air within the...

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

What class of screw thread is indicated with a machine screw described as 1/2-13 NC-2?

What is the purpose of a three-phase lighting power transformer bank of a shipboard distribution system?

The auxiliary oil-fired water-tube steam boiler on your tug is equipped with a water column similar to that shown in th...

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

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

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

How is access to the double bottom tanks usually provided for inspection, cleaning, maintenance, and repairs of tank in...

Which of the following statements is true concerning step-down transformer operation?

When cleaning burner atomizers associated with an oil-fired auxiliary boiler fitted on your harbor tug, which of the fo...

When operating with the auxiliary feed line, feed water flow is controlled __________.

The electrostatic vent fog precipitator removes oil mist from which of the following areas?

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

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

How are the line losses in a distribution circuit kept to a minimum?

You are observing the flame condition on an oil-fired auxiliary boiler installed on your coast-wise tug through an obse...

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

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

In fighting a fire in a fuel tank, the FIRST action you should attempt is to __________.

What statement is true concerning the construction of watertight bulkheads?

In the diagram of the switchboard shown in the illustration, if one of the turbines should fail due to a throttle trip,...

The engine manufacturer for the main engines used on your harbor tug specifies a supplemental coolant additive consisti...

Design characteristics of a velocity-compounded impulse turbine include the utilization of __________.

The lube oil system shown in the illustration is designed to lubricate the main bearings by what principle? Illustratio...

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

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

In the illustration of the one-line distribution system diagram, if at sea the 450 VAC section of the main switchboard ...

In a closed, re-circulating freshwater cooling system used for the main engines on your sea-going salvage tug, what fun...

Because of the pressure drop existing across each diaphragm, the flow of steam between the nozzle diaphragm and the rot...

As shown in the illustration, what is the purpose of pressurizing the main bearing lube oil sumps on a typical marine g...

Which of the following conditions is true concerning flammable liquid vapors with a concentration above the upper explo...

A spur gear pump should be operated with the discharge valves __________.

When placed in a magnetic field, which of the materials listed has the highest permeability?

A main-propulsion diesel engine on your ship docking tug has experienced a safety shutdown due to high lubricating oil ...

Large temperature and pressure drops which occur in the first stage of a combination impulse and reaction turbine are c...

Air used to cool the combustion liners and turbine components is referred to as which of the following?

The highest concentration of a harmful substance to which a person may be exposed without danger to health, is termed t...

The output volume of a positive fixed displacement pump can be changed only by __________.

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

After a main diesel engine on your river push boat has experienced a safety shutdown due to excessive crankcase pressur...

As steam accomplishes work in an engine or turbine, the pressure of the steam is reduced because it __________.

The fuel oil system of a gas turbine engine provides all EXCEPT which of the following?

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

A distinguishing feature of an eductor, when compared to other pumps, is the __________.

What does the symbol in figure "1" shown in the illustration represent? Illustration EL-0065

When rolling over a main engine on your river push boat prior to starting with the cylinder test valves open to expel a...

A turbine assembly in which steam flows in series through a high-pressure turbine and then on to a low- pressure turbine...

How do you manually lockout an SSS clutch?

Combustible gas indicators incorporate the use of a/an __________.

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

What is the name of the component labeled CR1 as shown in section "D" of the regulated DC power supply illustrated? Ill...

You are serving as a designated duty engineer onboard a harbor tug equipped with main propulsion diesel engines of the ...

Main steam turbine bearings are lined with __________.

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

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

In an electro-hydraulic steering system, damage due to rudder shock is prevented by __________.

The component labeled "CR1" in the circuit shown in the illustration serves what functional purpose? Illustration EL-00...

Suppose the diesel generator set drive engines are of the type shown in the illustration on your towing vessel. Assumin...

The correct radial clearances between the rotor and the casing in a propulsion turbine are maintained by the turbine __...

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

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

Which of the following statements is true concerning the operation of the device shown in the illustration? Illustratio...

A voltage amplifier has a calculated voltage gain of 5. Which statement is true concerning input and output voltages?

The ship-docking tug to which you are assigned has main engines fitted with injectors similar to those shown in the ill...

Allowance for axial expansion of a steam turbine due to temperature changes is provided for by the use of __________.

What feature is commonly used on articulated reduction gear arrangements for the correction of misalignment between the...

When preparing to pump flammable liquids with a centrifugal pump, you should __________.

The action necessary to use the steering gear room trick wheel when transferring the steering control from the wheelhou...

Referring to figure "3" of the illustration, what type of logic gate is symbolized? Illustration EL-0035

The harbor tug to which you are assigned has a main engine fuel system as shown in the illustration. Besides preventing...

The adjustable spherically seated self-aligning bearing housings used in turbines are provided with oil deflector rings...

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

When discharging clean ballast, prior to entering the loading port, if the ballast is determined by the oil monitor to ...

What mode of heat transfer is associated with the transport of thermal energy within a body or between two bodies in di...

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

The main propulsion engines onboard your harbor tug use a lubricating oil system as shown in the illustration. What ite...

Which type of packing is primarily utilized to control steam leakage from the casing of a modern auxiliary turbine?

A magnet pickup typically produces what type of signal output?

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

Light and other forms of radiation can act as a means of transporting heat energy from one body to another. This radiat...

An electric propulsion drive system in which the propulsion generator supplies power to both the propulsion motor and s...

The main propulsion engines onboard your tractor tug use a lubricating oil system as shown in the illustration. What it...

If contaminated lube oil were allowed to settle undisturbed in a tank, into which layers would the contaminants separat...

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

Victual waste is __________.

Referring to the illustrated diagram, what type of HVAC system is shown? Illustration RA-0043

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

The main propulsion diesel engines fitted on your salvage tug are started with compressed air using the system illustra...

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

Which of the following conditions permits a gas turbine to produce 100% power?

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

Referring to the illustrated diagram for a central-station hookup for a hot water heating system, what statement repres...

What type of motor is generally used in DC propulsion drive systems?

The ocean-going tug to which you are assigned is fitted with auxiliary engines as partly shown in the illustration. Wha...

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

Which of the following are the principal factors that affect the performance of a gas turbine compressor?

Your vessel is taking on bunkers from a shoreside facility. If oil begins flowing from one tank vent, which of the foll...

Before boring a blind tapered hole, a good shop practice to follow is to __________.

Some shipboard high voltage systems have the neutral point of the generators bonded to the ship's hull with a neutral g...

The river push boat to which you are assigned is fitted with generator engines as partly shown in the illustration. Wha...

The lube oil coolers installed in a gravity lubricating oil system are located between the __________.

The only hand tools that should be used on gas turbine engines are chrome plated, nickel plated, or which of the follow...

One consideration for determining the safest maximum rate at which bunker fuel may be received is by the __________.

Which of the listed temperature sensors consists of finely coiled wire, such as platinum, where the resistance varies d...

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...

The harbor tug to which you are assigned is fitted with 4-stroke cycle, 6-cylinder in-line diesel generator sets. Using...

What type of strainer is used in a turbine lube oil system to remove metallic particles?

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

When amendments are made to the shipboard oil pollution emergency plan, all revisions must be submitted to the Coast Gu...

Which of the following flowmeter primary devices works on the constriction type, differential head principle?

Assuming the vessel has an engine control room, where is an engineers' assistance needed alarm required to produce an a...

The ship-docking tug to which you are assigned is fitted with main propulsion diesel engines of the type shown in the i...

Of the many impurities commonly found in marine lubricating oil, which of the following CANNOT be removed by a centrifu...

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

In accordance with 33 CFR Subchapter O (Pollution), each operation involving the transfer of oil or oily mixture that r...

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

To facilitate communication between the wheelhouse and the steering gear room in a steering emergency where no external...

The river push boat to which you are assigned has diesel generators fitted with intake and exhaust systems as shown in ...

When monitoring steam propulsion plant lubricating oil temperatures while underway, what represents the temperature ris...

What are the two primary sources of deposits that build up on compressor blades?

Bunker "C" is classified as a grade __________.

In attempting to start the hydraulic pump drive motor of a horizontal electro-hydraulic anchor windlass, what condition...

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

The tractor tug to which you are assigned has main engines fitted with intake and exhaust systems as shown in the illus...

The splits located in the halves of main reduction gear bearings are aligned at an angle to the horizontal in order to ...

While standing watch underway on a ship with the gas turbine shown in the illustration, a fire emergency stop is initia...

When checking the level of a volatile liquid in a tank on the weather deck of a tank vessel, you should position yourse...

As it pertains to the automatic hoist winch brake of an electro-hydraulic cargo-handling pedestal-type deck crane, what...

As shown in the illustrated block diagram for a distributed automation system, what statement is true concerning the un...

The freshwater cooling systems serving the main engines of your towing vessel are of the type shown in the illustration...

On main turbine propulsion units, gear-type flexible couplings are generally used between the __________.

The two main types of compressor stall are known as what?

Individuals who have consumed alcohol within 24 hours of exposure to H2S can tolerate __________.

The term "oil foaming" in refrigeration practice, is used to describe what event?

Referring to the illustration pertaining to the semi-automatic navigation light panel circuit, if the buzzer sounds and...

The winch drive engine on the harbor tug to which you are assigned is fitted with a Roots-type blower as shown in the i...

The component shown in the illustration, labeled "I", is the __________. Illustration SE-0013

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

What information can be obtained from a marine chemist's certificate on a tank barge?

A device used to hold open the refrigeration compressor suction valve during starting to reduce the compression load is...

While monitoring an impressed current cathodic hull protection system, which of the following measurements should remai...

The ship-docking tug to which you are assigned is fitted with main propulsion engines driving through pneumatic airflex...

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

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

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

If the discharge reed valves used in a refrigeration compressor are leaking badly, what statement is true?

When power is restored after a complete power failure, how will the steering gear pump motor which was on- line respond?

Suppose each of the main propulsion engines on your harbor assist tug is equipped with a variable speed governor equipp...

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

If the lube oil scavenge temperature exceeds 300 degrees Fahrenheit on the gas turbine engine shown in the illustration...

In the absence of external forces, the center of gravity of a floating vessel is located directly above the __________.

A reciprocating refrigeration compressor may be tested for leaking discharge valves by stopping the compressor, turning...

Referring to the sound-powered telephone circuit shown in the illustration, what statement is true? Illustration EL-009...

The steam generating plant on your articulated tug-barge unit is of the forced-circulation type. Which figure of the il...

Where do fuel oil vapors tend to accumulate in an engine room?

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

If additional weight is placed on the main deck of the vessel shown in the illustration __________. Illustration SF-002...

Through which of the components shown in the illustration is flash gas formation a normal occurrence? Illustration RA-0...

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

Diesel engine closed, re-circulating cooling water systems are particularly prone to cavitation corrosion/erosion. Whic...

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

What type of combustor is used by the GE LM2500 gas turbine?

The weight of the liquid displaced by a vessel floating in sea water is equal to the __________.

Of the various possible methods shown in the illustration, which is the correct method of attaching a TXV feeler bulb t...

When testing insulation resistance of electric equipment and machinery, ideally when should the insulation resistance b...

What statement is true concerning diesel engines, such as those used for main propulsion and auxiliary power on tugboat...

In diesel engines, hydraulic valve lifters are used to __________.

The struts of the GE LM2500 compressor front frame provide passages for all of the following mediums EXCEPT which of th...

If the cause of severe list or trim of a vessel is due to off-center ballast, counter-flooding into empty tanks will __...

A high-pressure centrifugal chiller, currently charged with R-134a, is being evaluated for leak testing. The machine is...

When regreasing the electric motor bearing as shown in figure "B" of the illustration, what practice should be avoided?...

The main engines on your ocean-going tug are fitted with speed control governors of the type shown in the illustration....

The Fairbanks Morse part labeled "G", as shown in the illustration, is a __________. Illustration MO-0040

The gas generator section of the GE LM2500 gas turbine is composed of all of the following components EXCEPT which of t...

The important stability parameter "KG" is defined as the __________.

Before charging a refrigeration unit, unless quick disconnect fittings are used, the refrigerant charging hoses should ...

What should you be aware of when checking the specific gravity of the battery electrolyte with a hydrometer?

You are preparing to change the oil of the speed control governor on one of the main propulsion diesel engines on your ...

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

When a vessel is inclined, the tendency for it to return to its original position is caused by the __________.

Which of the following statements is true concerning the illustrated gauge manifold set? Illustration RA-0001

Suppose it is desired to connect a dual voltage three-phase squirrel-cage induction motor for low volts, but it is unde...

When preparing to change the oil of the speed control governor of one of the main propulsion engines on your towboat, y...

If an auxiliary diesel engine equipped with an electric starting system cranks very slowly after repeated attempts to s...

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

A vessel trimmed down by the bow has __________.

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

Which of the following methods should be used to dress the face of silver-plated contacts?

Suppose the generator set drive engines on your ship docking tug are fitted with hydraulic isochronous governors such a...

Fuel oil contamination of an auxiliary diesel engine lube oil can result in __________.

For the GE LM2500 gas turbine engine shown in the illustration, the 13th stage bleed air is used for which of the follo...

Adverse effects due to free surface will result when __________.

When pumping down an air conditioning system to test the low-pressure cut-out switch, assuming that the compressor is ru...

Under unusual circumstances, it may be required to operate a ship's service generator above its rated kV

The salvage tug to which you are assigned is fitted with a totally pneumatic propulsion control system as shown in the ...

High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by __________.

For the GE LM2500 gas turbine engine shown in the illustration, the HP turbine 1st stage nozzle vanes are cooled by whic...

In accordance with 46 CFR Subchapter W, the fuel tanks of motor-propelled lifeboats shall be __________.

In an air conditioning system set up as shown in the illustration, as the room humidistat initiates the lowering of the ...

After prior isolation and lock-out/tag-out procedures are performed, it is still possible that stored electrical energy ...

The pneumatic propulsion control system used on your river pushboat uses a diaphragm-operated relay valve as shown in th...

All of the diesel engine cylinder firing pressures are normal, yet all of the exhaust temperatures are low. Which of the...

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

In accordance with 33 CFR Subchapter O (Pollution), who makes the final decision of when oil transfer may begin?

When a reverse-osmosis freshwater generator is shutdown, what must be accomplished?

Which of the following devices would be forbidden to use as a primary means of electrical isolation?