Study individual questions with detailed AI explanations
Showing 190 of 190 questions
If you noted a large difference in the pressures indicated by a duplex pressure gage to the fuel oil system strainer, y...
To properly remove the burner tip nut from the burner barrel, the barrel should be _______________.
Which of the conditions listed would indicate a dirty fuel oil strainer?
What statement is true concerning the illustrated boiler saddle, support and foot? Illustration SG-0015
As shown on the illustrated soot blower diagram, how is the soot blower element rotated? Illustration SG-0023
When used for the purpose of controlling the temperature of main steam, what is the source of water and steam for the il...
As shown on the illustrated soot blower diagram, what item is responsible for opening and closing the steam admission po...
What is the name of the nozzle which is associated with the steam drum and is shown in the illustration? Illustration SG...
As shown on the illustrated huddling chamber type safety valve drawing, what item is associated with setting the blow do...
What is the name of the device pictured in the illustration? Illustration SE-0001
Which of the devices listed is commonly used to compensate for the expansion and minor misalignments occurring between t...
The component shown in the illustration, labeled "IV", is the_______________. Illustration SE-0013
The component shown in the illustration, labeled "I", is the_______________. Illustration SE-0013
The main turbine gland sealing system is designed to_______________.
Gland sealing steam is used during steam turbine operation to prevent the loss of _______________.
For the gland seal regulator shown in the illustration, an increase in gland seal pressure will result in ____________...
Which of the listed conditions aids in directing gland leak off steam from the low pressure propulsion turbine to pass t...
As shown in the illustration, live steam is supplied to the gland seal regulator via _. Illustration SE-0019
What method of burner light-off presents the greatest danger to boiler flareback?
In what part of a main boiler fuel oil service system is it permissible to raise the temperature of the fuel above the f...
Fuel piping should be regularly inspected for leaks. What leak location would be particularly troublesome in terms of pr...
When transferring fuel from a fuel storage tank to a fuel oil settling tank, what is the best protection against an oil ...
Where do fuel oil vapors tend to accumulate in an engine room?
Prior to initial light-off of an idle boiler, what must first be done to prevent boiler flareback?
Which statement is true concerning the operation of item 12 on the illustrated air register and burner assembly? Illustr...
Which of the following labeled items of the illustrated air register and burner assembly represents the poke hole cover ...
What size drill is used to drill the orifice of the sprayer plate of the illustrated atomizer? Illustration SG-0022 ...
Which of the following labeled items of the illustrated section of boiler refractory represents the insulating brick? Il...
Which of the following labeled items of the illustrated air register and burner assembly represents the means by which t...
Which of the following labeled items of the illustrated air register and burner assembly represents the mechanism for op...
Which of the following labeled items of the illustrated section of boiler refractory represents the insulating block? Il...
The cooling water flow from an air ejector inter condenser and after condenser is discharged directly into the ________...
Which statement is true concerning two-stage air ejector assemblies?
Air accumulated in the inter condenser of the air ejector assembly is discharged directly to the _______________.
While vacuum is being raised on the main unit and the turbine warmed, condensate is recirculated to the main condenser ...
According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil sludge tank? Ill...
According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil gravity tank? Il...
What statement is true concerning the illustrated steam turbine bearing lubricating oil flow and temperature indicating ...
According to the illustrated lubricating oil system diagram, which of the labeled items would be used to verify that the...
According to the illustrated lubricating oil system diagram, which of the labeled items is the lube oil renovating tank?...
According to the illustrated lubricating oil system diagram, which of the labeled items would be used to manually strip ...
The adjustable spherically seated self-aligning bearing housings used in main turbines are provided with oil deflector ...
Which of the devices listed is found on an LP main propulsion steam turbine casing?
An efficient seal is normally obtained between the upper and lower halves of a turbine casing by _______________.
According to the illustrated cross-compounded main propulsion turbine set, where are the astern elements located? Illust...
While a vessel is underway, one of the FIRST indications of the failure of the gland leak off exhaust fan motor is ____...
While making your rounds, you notice the main lube oil temperature to be higher than normal. To remedy this situation,...
During normal operation of a main propulsion turbine, the lube oil supply temperature to the bearings should be maintai...
The astern guarding valve on main propulsion steam turbine units must be open when a vessel is _______________.
An overheated bearing in the main propulsion unit is indicated by _______________.
Why are two fuel oil heaters "E" provided in the fuel oil system shown in the illustration? Illustration SG-0009
If water hammer develops while opening the valve in a steam line, which of the following actions should be taken?
In terms of the completeness of combustion, in viewing the condition of the stack, what would be the indication of the L...
In terms of the diluting effect of excessive excess air, when viewing the flame through a peephole, what would be the in...
In terms of the completeness of combustion, in viewing the condition of the stack, what would be the indication of the M...
The leakage of air into the pump casing by way of the packing gland of a condensate pump, is prevented by _____________...
Which of the pumps listed operates at constant speed and delivers water to the deaerating feed tank at a nearly constant...
In a main propulsion steam turbine installation, the condensate pump initially discharges to the _______________.
According to the illustrated diagram, what is the correct sequential order of heat exchangers that the main condensate p...
While underway, vacuum in the main condenser is primarily caused by the _______________.
Zincs are installed in the main and auxiliary condenser water boxes to _______________.
Water boxes on main condensers are vented to _______________.
Which of the condensers listed is cooled by sea water?
A main condenser utilizing a scoop for the circulation of seawater must be constructed as a _______________.
Which statement listed represents a vital function of the main condenser?
Makeup feed water is brought into an operating closed feed system via the _______________.
Air in the main condenser is harmful because it will _______________.
According to the illustrated diagram, what statement is true concerning the operation of the main condenser hotwell leve...
In the condensate system, the automatic recirculating valve can be actuated by the _______________.
The automatic recirculating valve in the main condensate recirculating line is controlled by a temperature sensor which ...
Clean low pressure steam drains are collected in the _______________.
The atmospheric drain tank (ADT) normally drains to the _______________.
According to the illustrated diagram, what statement is true concerning the operation of the "make-up valve"? Illustrati...
High pressure and low pressure drain systems are part of the _______________.
Which of the labeled items within the illustrated steam drum represents the last line of defense in helping to prevent m...
Which of the labeled items within the illustrated steam drum represents the means by which feed water is introduced into...
Which of the labeled items within the illustrated steam drum represents the means by which water treatment chemicals are...
Which of the labeled items within the illustrated steam drum helps prevent surging of water within the drum as a vessel ...
Which of the labeled items within the illustrated steam drum represents the means by which floating impurities are remov...
Which of the labeled items attached to the top of the illustrated steam drum represents the means by which saturated ste...
As found in a reduction gear drive system, thrust bearings serve to _______________.
What type of thrust is the bearing shown in the illustrated steam turbine shaft bearing designed to absorb? Illustration...
In the illustrated exploded view of a pivoted shoe thrust bearing, identify the base ring. Illustration SE-0014 ...
What type of bearing is shown in the illustration? Illustration SE-0017
Which of the following types of bearings are used as line shaft bearings?
Babbitt is a metal alloy commonly used for lining _______________.
In addition to sensing steam drum water level, what additional sensing input does a two- element feed water regulator co...
The pressure in the feed water system must exceed boiler steam drum pressure in order to _______________.
To prevent pulsations from developing in the boiler feed water lines, the discharge side of a reciprocating feed pump i...
Fuel oil settling tanks are used to _______________.
The main reason for having a low suction line on the fuel oil service or settling tanks is to _______________.
In which of the listed components is chemical energy converted to thermal energy with regards to boiler operation?
The steam drum in a D-type marine boiler _______________.
In a single furnace boiler, where is the steam typically cooled for use as auxiliary steam?
The item shown in the illustration is commonly identified as a GS-0124
Lube oil is preheated before centrifuging in order to_______________.
The dirty oil inlet on centrifugal lube oil purifiers is located at the _______________.
In a disk type centrifugal purifier, the bowl is mounted on the upper end of the _______________.
Which system should be used when required to raise the water level in an idle boiler?
When operating with the auxiliary feed line, feed water flow is controlled _______________.
The main feed check valve functions to _______________.
Under EMERGENCY operating conditions, the proper valve positions for controlling feed water to the boiler should be the...
The connections labeled "A" in the illustration, are used to SG-0025
Under normal conditions, the rate of heat transfer in a feed water heater is most greatly affected by the _____________...
A slight vacuum is maintained in the shell of the first stage heater shown in the illustration. The primary reason for...
The upper section of the feed water heater indicated by "G" in the illustration is used as the _. Illustration SG-...
The unit shown in the illustration is used as the _______________. Illustration SG-0025
What is the source of heat for a third stage feed heater (if fitted) while a vessel is underway under full load? ...
Which of the following modes of heat transfer does NOT require any physical contact between a warmer and a cooler substa...
By which of the listed methods may heat be transferred from one body to another?
Which of the following statements is correct concerning heat transfer?
The gravity tank in a gravity lube oil system serves to _______________.
Which of the following statements about gravity type lube oil systems is correct?
Which of the following conditions is indicated by oil flowing through a lube oil gravity tank overflow sight glass? ...
Concerning the classification of steam turbines, a cross compound designed unit _______________.
In a cross-compounded turbine propulsion plant, steam enters the _______________.
What is the purpose of the items labeled "moving blades" located on the illustrated steam turbine? Illustration SE-0003 ...
Steam supplied to the main propulsion turbines is _______________.
On a main propulsion turbine set of a merchant ship, where is the astern staging generally located?
What is the purpose of the item labeled "nozzle" located on the illustrated steam turbine? Illustration SE-0003
Most auxiliary turbine feed pumps do not require an external source of gland sealing steam because they _______________.
The safety device provided on a turbo generator which closes the throttle automatically when the cooling water to the co...
A back pressure trip on a ship's service turbo-generator functions to trip the turbine under what circumstance?
During high speed operation of the main turbine propulsion unit, the heat absorbed by the lubricating oil is removed by...
The lube oil coolers installed in a gravity lubricating oil system are located between the _______________.
According to the illustrated auxiliary steam and HP bleed steam system diagram, what are the characteristics of the stea...
The constant pressure governor of a turbine-driven feed pump maintains which of the following pressures at a constant va...
An excess pressure governor is a special type of control device which would normally be found on a _______________.
What is the normal destination of steam exiting a main feed pump drive turbine?
According to the illustrated diagram, what is the normal source of heat for the first stage feed heater and the distilli...
The purpose of the steam control valves installed in the auxiliary exhaust line is to _______________.
The auxiliary exhaust system shown in the illustration can be supplied by steam from the . SG-0024
The intermediate pressure bleed steam system, shown in the illustration, is used to supply steam at approximately ...
According to the illustrated diagram, what is the normal source of heat for the boiler air heaters when the vessel is un...
A lube oil sample is taken from the main engine lube oil system and visually inspected. Which of the following would ind...
In a gravity type lube oil service system, if no lube oil appears in the sight glass of the return drop line while unde...
The best indication that a bearing is being properly lubricated is by the _______________.
Excessive water in an operating lube oil system can be detected by _______________.
The maximum temperature rise of oil passing through any reduction gear set, or bearing, should not exceed _____________...
When a sudden increase in pressure occurs in a forced lubrication system, you should check for a _______________.
On a ship equipped with a gravity type lube oil system, which of the conditions listed will occur FIRST if the main lube...
While a vessel is underway, which of the conditions listed would indicate a leak in the lube oil cooler?
The source of metal particles adhering to the magnets in a lube oil strainer is probably from the _______________.
After a boiler has been taken off the line and is cooling, the air cock is opened to _______________.
Which of the following statements about boilers is correct?
Which of the valves listed should be closed before lighting off a boiler?
When raising steam on an idle boiler and the steam pressure has risen to about 5 pounds more than the pressure of the ...
Which of the following precautions should be taken prior to lighting off a boiler?
While raising steam on a cold boiler, the air cock is to be closed after _______________.
In a pressure type main propulsion turbine lubrication system, the lube oil service pumps normally take suction from th...
Which of the conditions listed should be immediately reported to the engineering officer on watch?
The jacking gear on main propulsion turbines can be used to _______________.
Under what circumstances would a propulsion steam turbine turning (jacking) gear most likely be used?
What statement concerning the operation of a propulsion steam turbine turning (jacking) gear is true?
The jacking gear must be engaged as quickly as possible when securing the main turbines in order to _______________.
What statement is true concerning a propulsion steam turbine turning (jacking) gear?
Magnets are installed in the main propulsion turbine lube oil strainers to attract metal particles released through wea...
As the speed of an oil lubricated ball bearing increases, fluid friction, due to churning, generates heat. This conditi...
Which of the filter/strainer units listed permits you to clean the element while leaving the system on the line?
The DC heater automatic level dump valve is used to _______________.
High pressure steam drains are normally discharged to the _______________.
The DC heater functions to _______________.
Which of the listed components would be considered the dividing line separating the condensate system from the feed wate...
Cooling water to the vent condenser in a DC heater is supplied by the _______________.
Prior to relieving the watch you should first check the fire room status by verifying the boiler steam drum level and _...
If the water level in a steaming boiler is dropping rapidly and cannot be kept at the normal level by standard practice...
Which of the actions listed should be carried out immediately after securing the fires in one boiler of a two boiler shi...
After the steam leaves the low pressure turbine, it enters the _______________.
According to the illustrated auxiliary steam and HP bleed system diagram, what steam loads are supplied by the same stea...
According to the illustrated steam and HP bleed system diagram, which steam pressure reducing station has the lowest set...
A centrifugal oil purifier should be shut down if the _______________.
A poorly cleaned lube oil purifier bowl may result in _______________.
During the routine inspection of an operating centrifugal lube oil purifier, you notice oil discharging through the wate...
If live steam is supplied directly to the tank heating coils, the collected drains in the 'clean' section of the contam...
Condensate return lines from tank heating coils are led to the _______________.
Which statement is true concerning drain inspection tanks?
If the condensate level in the loop seal of the air ejector inter condenser is lost, _______________.
If the boiler water and condenser hotwell levels are normal, but the DC heater level is only 30% of full, you should __...
Excessive recirculation of condensate should be avoided, as it can cause _______________.
Which of the conditions listed could prevent a centrifugal condensate pump from developing its rated capacity?
Excessive water loss from the main feed system can be caused by _______________.
Saltwater contamination of condensate could occur at which component?
Serious tube leaks in the air ejector after condenser assembly may cause _______________.
When placing a cleaned and properly made up atomizer in the spare atomizer rack, how should the atomizer be stored? ...
When blowing tubes on an integral superheat boiler fitted with an economizer, the operating sequence to be followed is r...
When blowing tubes, what is the determining factor in deciding how many revolutions of rotation of a soot blower element...
When performing a bottom blow on a boiler, what valve is spun open quickly?
When cleaning boiler fuel oil atomizer parts, what type of cleaning tool should NEVER be used?
When performing a periodic gauge glass blow down to insure that the glass is free and operating correctly, what action i...