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Seafarers' Examination and Documents Directorate: Ports and Maritime Organization

The document is an examination paper for the Third Engineer Officer rank, focusing on engineering knowledge related to marine operations. It includes questions on air compressors, main engine cylinder lubrication, safety precautions for auxiliary boilers, turbochargers, and the consequences of fuel injection timing in diesel engines. The exam allows 3 hours for completion with a passing mark of 60%.

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32 views2 pages

Seafarers' Examination and Documents Directorate: Ports and Maritime Organization

The document is an examination paper for the Third Engineer Officer rank, focusing on engineering knowledge related to marine operations. It includes questions on air compressors, main engine cylinder lubrication, safety precautions for auxiliary boilers, turbochargers, and the consequences of fuel injection timing in diesel engines. The exam allows 3 hours for completion with a passing mark of 60%.

Uploaded by

rezbabakhani
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Candidate’s Name :

Ports and Maritime Organization


Seafarers' Examination and Documents Directorate
Exams Code : TEMK - 946

Subject : Engineering Knowledge Motor Date: 1394 .08.26


Rank : Third Engineer Officer (KW>750) Time allowed: 3.0 Hrs
(Pass mark : 60)
Q.1) - With reference to air compressors explain why:
a) - Inter coolers are employed. (6M)
b) - In addition to relief valves, fusible plugs are employed. (5M)
c) - Oil carry over with delivery air is to be minimized and prevented. (5M)

Q.2) - With reference to main engine cylinder lubrication:


a) - State what are the indications of correct quantity of oil being consumed. (6M)
b) - What is the result of excessive oil used? (6M)
c) - What are the consequences of insufficient oil used. (6M)

Q.3) - a) - State the safety precaution which must be taken care of while starting auxiliary oil
fired boiler. (8M)
b) - Explain how the gauge glasses are cleaned. (3M)
c) - State why the boiler water must be chemically tested, and what action should be
taken after observing the results. (5M)

Q.4) - Sketch the main engine "tie rod arrangement" and state; (8M)
a) - How tightness of rods are ensured. (4M)
b) - The factors which tend to loosen the rods. (4M)

Q.5) - With reference to turbochargers:


a) - Explain the term surging, stating how it occurs, its effect on the turbocharger and
how it can be avoided. (6M)
b) - Describe the procedures for cleaning each of the following and explain the precautions
which should be taken:
i) - Suction air filter. (4M)
ii) - Turbine blades and nozzle ring. (6M)

Q.6) - With reference to main diesel engine, explain the consequences of;
a) - Late fuel injection. (9M)
b) - Early fuel injection. (9M)
Candidate’s Name :

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