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BDOC Engineering Exam 2025 | Basic Division
Officer Course (BDOC) | Questions and Correct
Answers | Verified Answers
What are the 5 heat illnesses? ---------CORRECT ANSWER------------------ Dehydration
- Heat Rash
- Heat Cramps
- Heat Exhaustion
- Heat Stroke What are the symptoms of dehydration? ---------CORRECT ANSWER------------------ dry/sticky mouth
- lethargy or coma
- low to no urine output; dark yellow urine
- no tears
- sunken eyes What are the symptoms of heat rash? ---------CORRECT ANSWER-----------------rash due to poor hygiene, clogged pores, and being in heat
What are the symptoms of heat cramps? ---------CORRECT ANSWER------------------ large muscle spasms
- profuse sweating
- symptom of heat exhaustion What are the symptoms of heat exhaustion? ---------CORRECT ANSWER--------------- --- clammy/pale skin
- profuse sweating
- weak and rapid pulse
- dilated pupils What are the symptoms of heat stroke? ---------CORRECT ANSWER------------------ hot/dry skin
- reduced or no sweating
- rapid pulse
- constricted pupils
- elevated blood pressure
- elevated temperature What is piping? ---------CORRECT ANSWER-----------------an assembly of pipes of tubes
- Gas turbine
- Diesel engine What types of fuel are used on-board ships? ---------CORRECT ANSWER--------------- --- F- 44 (JP-5) Kerosene type
- Fuel System Icing Inhibitor (FSII)
- Depresses freezing point to
- 43F
- F-76 (primary)
- Gasoline type fuel used for Propulsion Where is fuel stored? ---------CORRECT ANSWER-----------------in Service Tanks (ballasting tanks allow ship to maintain stability as fuel levels decrease) How is fuel transferred? ---------CORRECT ANSWER-----------------using fuel oil transfer pumps (centrifugal) Describe the fuel oil service system. ---------CORRECT ANSWER----------------- 2 service tanks and 2 service pumps
How is fuel oil purified? ---------CORRECT ANSWER-----------------fuel oil transfer heater heats fuel to bring it to optimum temperature, F/O purifier centrifugal pump When is fuel tested? ---------CORRECT ANSWER------------------ during receipt of fuel at beginning, middle, and endpoint and every 15 minutes Describe the fuel test. ---------CORRECT ANSWER------------------ Clear and Bright
- Clear (clear as mud...check for sediment)
- Bright (checked for haziness...indication of water)
- API/Specific Gravity
- Weight of fuel vs weight of water at 60F
- Flashpoint Test
- Fuel is heated in a closed cup at a specified rate until
- technically accurate
- standarized What is EOP? ---------CORRECT ANSWER-----------------Engineering Operational Procedures What is EOCC? ---------CORRECT ANSWER-----------------Engineering Operational Casualty Control What are the differences between EOP and EOCC? ---------CORRECT ANSWER------- ----------EOP:
- contains procedures, status charts, and diagrams
- required for normal transition between "steady state" operating conditions
- 6 chapter user's guide EOCC:
- purpose is to respond to and control commonly occuring casualties
- maintain safe, stable conditions What is the engineering operational chain of command when underway? --------- CORRECT ANSWER-----------------CO --- OOD --- EOOW --- Engineering Watchstanders
What is the engineering operational chain of command when in port? --------- CORRECT ANSWER-----------------CO --- CDO --- EDO --- Engineering Watchstanders Who does CHENG report to? ---------CORRECT ANSWER-----------------The CO Describe the Restricted Maneuvering Document. ---------CORRECT ANSWER--------- --------- is considered the CO's guidance to place safety over ship and crew vs equipment
- CO's approval is needed for the setting of or securing from RDM
- CHENG promulgates RMD which is found in CO's standing orders
- Authorized deviation from EOSS procedures What is NAVOSH? ---------CORRECT ANSWER-----------------Navy Occupational Safety and Health What are the 4 major NAVOSH programs? ---------CORRECT ANSWER------------------ Sight Conservation
Double:
- needed for:
- 96dB(A) or greater
- 165dB(P) or greater What does white mean? ---------CORRECT ANSWER-----------------Steam What does tan mean? ---------CORRECT ANSWER-----------------Low pressure air What does dark grey mean? ---------CORRECT ANSWER-----------------High pressure air What does dark green mean? ---------CORRECT ANSWER-----------------Saltwater What does gold mean? ---------CORRECT ANSWER-----------------Sewage What does yellow mean? ---------CORRECT ANSWER-----------------Fuel
What does yellow/black mean? ---------CORRECT ANSWER-----------------Lube oil What does red mean? ---------CORRECT ANSWER-----------------Fire-main What does orange mean? ---------CORRECT ANSWER-----------------Hydraulic oil What does light purple mean? ---------CORRECT ANSWER-----------------Jet fuel What does light blue mean? ---------CORRECT ANSWER-----------------Fresh water What does red/green mean? ---------CORRECT ANSWER-----------------AFFF What does grey/white mean? ---------CORRECT ANSWER-----------------Halon What are the 2 classes of pumps? ---------CORRECT ANSWER------------------ Positive displacement
- Non-positive displacement
- multi-stage What is a conductor? ---------CORRECT ANSWER-----------------material with excess free electrons which allows the flow of electrical current What is resistance? ---------CORRECT ANSWER-----------------Symbol "Omega"; opposition to free flow of current; measured in ohms What is current? ---------CORRECT ANSWER-----------------Symbol "I"; flow of electrons from source to lead What are the uses of 2190 oil? ---------CORRECT ANSWER------------------ steam turbines
- lubricating MRGs
- low, medium, and high pressure air compressors What are the L/O testing requirements for equipment with online purification? --- ------CORRECT ANSWER------------------ Clear and Bright
- Purifier Efficiency Test
- Inlet vs Outlet
What are the L/O testing requirements for equipment without online purification? ---------CORRECT ANSWER------------------ Clear and Bright (visible test)
- Transparency Test
- Visible Sediment Test
- Bottom Sediment and Water Test (centrifuge spin) What is the purpose of the lube oil system? ---------CORRECT ANSWER----------------
- to store, transfer, purify, and preheat lube oil for the MRG and CRP system How is lube oil cooled? ---------CORRECT ANSWER-----------------by seawater How many shafts and engines are on-board most ships? ---------CORRECT ANSWER-----------------2 shafts and 4 engines On DDGs and CGs which shaft is the longest? ---------CORRECT ANSWER--------------- --Starboard
What are the purpose of line shaft bearings? ---------CORRECT ANSWER--------------- --- provide radial support
- lubricated by 2190 from its own sumps What are the purpose of the stern tube bearings? ---------CORRECT ANSWER-------- ---------- provide radial support
- located aft
- cooled and lubricated by seawater What are the purpose of strut bearings? ---------CORRECT ANSWER------------------ supports end of shaft
- cooled and lubricated by seawater
- similar to stern tube bearing What is the only reference for tag-outs? ---------CORRECT ANSWER----------------- The Tag-Out User's Manual (TUM) What is the purpose of tag-outs? ---------CORRECT ANSWER-----------------to prevent/mitigate the operation of equipment for maintenance when the equipment is unreliable or performing abnormally
What is difference between caution and danger tags? ---------CORRECT ANSWER--- --------------Caution:
- yellow
- must provide temporary special instructions
- hung as a precautionary method Danger:
- red
- prohibits the operation or removal of equipment
- used for preventative and corrective measures What are the 2 labels that can be hung on gages? ---------CORRECT ANSWER--------- --------- Out-of-Calibration
- Out-of-Commission Describe the CAL label. ---------CORRECT ANSWER------------------ orange
- used to identify instruments that are out of calibration
- error must be small and
What tag-out item requires the CO's permission? ---------CORRECT ANSWER--------- --------when double barrier protection is needed but is not possible, he/she must give his/her permission to use single barrier protection What are the 7 double barrier conditions? ---------CORRECT ANSWER----------------- Hi TOP, Hi POP, HazMat
- Hi Temp ( >200F)
- Oil (with flash point <200F)
- Penetration below waterline
- Hi Pres. (>1000psi)
- Oxygen systems
- Pipe greater than 1/2 in
- HazMat (toxic vapor) What type of air is considered "high pressure"? ---------CORRECT ANSWER----------- ------anything above 1000 psig
What pressure does the High Pressure Air Compressor (HPAC) maintain? --------- CORRECT ANSWER-----------------3000 psig As pressure goes up, temperature goes ________ ---------CORRECT ANSWER-------- ---------up Why must HPA be dehydrated? ---------CORRECT ANSWER-----------------to reduce water and prevent corrosion What are the main uses for HPA? ---------CORRECT ANSWER------------------ Weapons support
- Aviation support
- Ship's Service Air Backup
- Engine Starting Air What type of air is considered to be low pressure air? ---------CORRECT ANSWER--- --------------150 psig and below What are the modes of operation for LPA? ---------CORRECT ANSWER------------------ automatic
- manual
