BD Marine Engineer Class 1 (Chief Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 1 (Chief Engineer) Certificate of Competency Exam - BD Marine Engineer Class 1 (Chief Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 1 (Chief Engineer) Certificate of Competency Exam

Question 1

What is the primary function of the crosshead in a large slow-speed two-stroke crosshead marine diesel engine?

To increase the engine's compression ratio during the compression stroke To transmit the piston's side thrust to the guide shoes, keeping the connecting rod free of lateral load from the cylinder liner To control the timing of fuel injection into the cylinder To cool the piston crown using lubricating oil

Correct Answer:

To transmit the piston's side thrust to the guide shoes, keeping the connecting rod free of lateral load from the cylinder liner

Question 2

In a modern low-speed two-stroke marine diesel engine with a single exhaust valve mounted in the cylinder head and scavenge air ports low in the liner, what type of scavenging arrangement is this?

Cross scavenging Loop scavenging Uniflow scavenging Reverse scavenging

Correct Answer:

Uniflow scavenging

Question 3

What is the main purpose of a turbocharger fitted to a marine diesel engine?

To reduce the engine's fuel injection pressure To compress the intake air above atmospheric pressure so more air, and therefore more fuel, can be burned, increasing power output To cool the exhaust gas before it leaves the funnel To reduce the engine's compression ratio at low load

Correct Answer:

To compress the intake air above atmospheric pressure so more air, and therefore more fuel, can be burned, increasing power output

Question 4

What does a Variable Injection Timing (VIT) device on a marine diesel engine fuel pump allow the engineer to achieve?

Change the grade of fuel oil being burned Advance or retard the start of fuel injection relative to engine load, to optimise combustion and control peak firing pressure Change the number of cylinders firing Adjust the turbocharger boost pressure directly

Correct Answer:

Advance or retard the start of fuel injection relative to engine load, to optimise combustion and control peak firing pressure

Question 5

What is the main danger addressed by fitting a crankcase explosion relief door to a marine diesel engine crankcase?

Overheating of the turbocharger bearings Ignition of an oil mist that has accumulated in the crankcase, typically from a hot spot such as an overheated bearing Excessive fuel rack movement Loss of scavenge air pressure

Correct Answer:

Ignition of an oil mist that has accumulated in the crankcase, typically from a hot spot such as an overheated bearing

Exam overview

About this Exam

Prepare with the BD Marine Engineer Class 1 (Chief Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 1 (Chief Engineer) Certificate of Competency Exam practice quiz. This question bank includes 100 questions covering engine, diesel, main, marine, and ship. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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BD Marine Engineer Class 1 (Chief Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 1 (Chief Engineer) Certificate of Competency Exam

This practice set contains 100 questions from the matching question bank and focuses on engine, diesel, main, marine, and ship. 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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BD Marine Engineer Class 1 (Chief Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 1 (Chief Engineer) Certificate of Competency Exam

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