BD Marine Engineer Class 2 (Second Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 2 (Second Engineer) Certificate of Competency Exam - BD Marine Engineer Class 2 (Second Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 2 (Second Engineer) Certificate of Competency Exam

Question 1

What is the primary purpose of scavenging in a two-stroke marine diesel engine?

To expel burnt exhaust gases from the cylinder and replace them with fresh air before the next compression stroke To cool the piston crown using lubricating oil To atomize the fuel before injection To control the engine's rotational direction

Correct Answer:

To expel burnt exhaust gases from the cylinder and replace them with fresh air before the next compression stroke

Question 2

In a trunk-piston type diesel engine, such as those commonly used to drive auxiliary generators, which component directly absorbs the piston's side thrust?

The camshaft bearings A separate crosshead and guide shoe The piston skirt bearing against the cylinder liner wall The flywheel

Correct Answer:

The piston skirt bearing against the cylinder liner wall

Question 3

What is turbocharger surging and why is it a dangerous condition?

A normal, beneficial vibration that occurs at full load and improves scavenge air delivery An unstable, pulsating reverse flow through the compressor when air demand is too low for the pressure the compressor is trying to develop, causing vibration and potential mechanical damage A condition caused only by excess fuel injection that has no effect on the turbocharger itself A deliberate operating mode used during maneuvering to increase engine response

Correct Answer:

An unstable, pulsating reverse flow through the compressor when air demand is too low for the pressure the compressor is trying to develop, causing vibration and potential mechanical damage

Question 4

What is the function of the delivery valve in a jerk-type fuel injection pump?

It meters the total quantity of fuel delivered per injection stroke It maintains a residual pressure in the high-pressure fuel line after injection ends, ensuring rapid closure of the injector needle valve and preventing dribbling or secondary injection It atomizes the fuel as it leaves the injector nozzle It sets the exact start-of-injection timing independent of the pump plunger

Correct Answer:

It maintains a residual pressure in the high-pressure fuel line after injection ends, ensuring rapid closure of the injector needle valve and preventing dribbling or secondary injection

Question 5

What is the purpose of the turning (barring) gear fitted to a main propulsion diesel engine?

To increase engine speed during maneuvering To rotate the engine slowly by electric motor or by hand for maintenance and inspection, with a safety interlock that prevents starting air admission while it is engaged To reverse the direction of rotation while running at sea To test the governor's response under full engine load

Correct Answer:

To rotate the engine slowly by electric motor or by hand for maintenance and inspection, with a safety interlock that prevents starting air admission while it is engaged

Question 1

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Prepare with the BD Marine Engineer Class 2 (Second Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 2 (Second Engineer) Certificate of Competency Exam practice quiz. This question bank includes 100 questions covering engine, diesel, main, fitted, and generator. 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 2 (Second Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 2 (Second Engineer) Certificate of Competency Exam

This practice set contains 100 questions from the matching question bank and focuses on engine, diesel, main, fitted, and generator. 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 2 (Second Engineer) Practice Questions - Bangladesh DoS Marine Engineer Officer Class 2 (Second Engineer) Certificate of Competency Exam

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