1|Page
Engineering BDOC Exam 2025/ 2026 – Basic Officer
Course Military Engineering Test with Questions and
Answers|| Latest Exam!!!
What type of electricity is generated on-board most ships?
- ANSWER-450V, 60Hz, 3 phase electricity
What type of electricity is generated on-board a carrier? -
ANSWER-4160V, 60Hz, 3 phase electricity
What is the use of 400Hz? - ANSWER-most electronics
(fire control and sonar) use 440V, 400Hz, 3 phase
electricity
What is a prime mover? - ANSWER-provides mechanical
energy to generate electrical energy in the generator
What are 3 examples of prime movers? - ANSWER--
Steam turbine
- Gas turbine
- Diesel engine
What types of fuel are used on-board ships? - ANSWER--
F-44 (JP-5) Kerosene type
- Fuel System Icing Inhibitor
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(FSII)
- Depresses freezing point to
-43F
- F-76 (primary)
- Gasoline type fuel used for
propulsion
Where is fuel stored? - ANSWER-in Service Tanks
(ballasting tanks allow ship to maintain stability as fuel
levels decrease)
How is fuel transferred? - ANSWER-using fuel oil transfer
pumps (centrifugal)
Describe the fuel oil service system. - ANSWER-2 service
tanks and 2 service pumps
How is fuel oil purified? - ANSWER-fuel oil transfer heater
heats fuel to bring it to optimum temperature, F/O purifier
centrifugal pump
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When is fuel tested? - ANSWER-- during receipt of fuel at
beginning, middle, and endpoint and every 15 minutes
Describe the fuel test. - 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
a flash is detected
What type of oil is used on-board ships? - ANSWER-2190
aka Steam Turbine Lubricating Oil
Engineering BDOC Exam 2025/ 2026 – Basic Officer
Course Military Engineering Test with Questions and
Answers|| Latest Exam!!!
What type of electricity is generated on-board most ships?
- ANSWER-450V, 60Hz, 3 phase electricity
What type of electricity is generated on-board a carrier? -
ANSWER-4160V, 60Hz, 3 phase electricity
What is the use of 400Hz? - ANSWER-most electronics
(fire control and sonar) use 440V, 400Hz, 3 phase
electricity
What is a prime mover? - ANSWER-provides mechanical
energy to generate electrical energy in the generator
What are 3 examples of prime movers? - ANSWER--
Steam turbine
- Gas turbine
- Diesel engine
What types of fuel are used on-board ships? - ANSWER--
F-44 (JP-5) Kerosene type
- Fuel System Icing Inhibitor
,2|Page
(FSII)
- Depresses freezing point to
-43F
- F-76 (primary)
- Gasoline type fuel used for
propulsion
Where is fuel stored? - ANSWER-in Service Tanks
(ballasting tanks allow ship to maintain stability as fuel
levels decrease)
How is fuel transferred? - ANSWER-using fuel oil transfer
pumps (centrifugal)
Describe the fuel oil service system. - ANSWER-2 service
tanks and 2 service pumps
How is fuel oil purified? - ANSWER-fuel oil transfer heater
heats fuel to bring it to optimum temperature, F/O purifier
centrifugal pump
, 3|Page
When is fuel tested? - ANSWER-- during receipt of fuel at
beginning, middle, and endpoint and every 15 minutes
Describe the fuel test. - 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
a flash is detected
What type of oil is used on-board ships? - ANSWER-2190
aka Steam Turbine Lubricating Oil
