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Question 1
In a marine four-stroke diesel engine, how many crankshaft revolutions are required to complete one full working cycle in each cylinder?
Correct Answer:
Two revolutions
Question 2
A large slow-speed marine two-stroke crosshead engine produces a power stroke in each cylinder at what frequency?
Correct Answer:
Once every revolution
Question 3
What is the primary purpose of scavenging in a marine two-stroke diesel engine?
Correct Answer:
To remove burnt gases and supply fresh air for the next cycle
Question 4
Which component is fitted to a large two-stroke marine diesel engine but is NOT present in a trunk-piston four-stroke engine?
Correct Answer:
Crosshead and piston rod
Question 5
Why is a separate cylinder lubrication system used on a large crosshead two-stroke marine diesel engine?
Correct Answer:
Because the cylinder liner is isolated from the crankcase and needs its own alkaline oil to neutralise acids
Question 1
Exam overview

About this Exam

Prepare with the MAJ EOOW Engineer Exam Practice Questions - Maritime Authority of Jamaica Engineer Officer of the Watch (STCW III 1) Certificate of Competency Examination Exam practice quiz. This question bank includes 100 questions covering engine, marine, fuel, water, and diesel. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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MAJ EOOW Engineer Exam Practice Questions - Maritime Authority of Jamaica Engineer Officer of the Watch (STCW III 1) Certificate of Competency Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on engine, marine, fuel, water, and diesel. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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