MEK Exit Exam • Set 2 Question 27 of 30

Exhaust gases from the main engine go to the atmosphere through

✓

Direct Answer

Option D: exhaust gas boiler

Exhaust gases from the main engine, after potentially passing through an exhaust gas boiler (economizer) for heat recovery, are released to the atmosphere through the ship's exhaust uptake or funnel. An inert gas generator or exhaust fan serves different purposes.

All Options

A

oil fired boiler

B

inert gasgenerator

C

exhaust fan

D

exhaust gas boiler (Correct Answer)

Detailed Explanation & Context

Exhaust gases from the main engine, after potentially passing through an exhaust gas boiler (economizer) for heat recovery, are released to the atmosphere through the ship's exhaust uptake or funnel. An inert gas generator or exhaust fan serves different purposes.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Marine Engineering Knowledge (MEK).

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Q1 Why is jacket cooling water kept treated with chemical inhibitors in marine diesel engines? Q2 What is the function of the economizer fitted in a ship's main engine exhaust boiler system? Q3 What safety device prevents starting air from entering an engine cylinder when the piston is in motion? Q4 What is the function of an oily water separator (OWS) bilge alarm (15 ppm monitor)? Q5 What causes thermal surging in a marine engine turbocharger? Q6 What is the main advantage of using a variable pitch propeller (CPP) on merchant vessels? Q7 What type of valve is installed on cylinder heads to protect against excessive combustion pressure? Q8 What is the primary function of the stern tube seal assembly? Q9 Why must auxiliary diesel engines be warmed up before applying heavy electrical load? Q10 What is the purpose of an air compressor intercooler?