MEK Exit Exam • Set 3 Question 7 of 30

The lower most ring on a diesel engine piston is called

✓

Direct Answer

Option A: oil scraper ring

The bottom-most ring on a piston, typically featuring a tapered or spring-loaded design, is the oil scraper ring. Its function is to scrape excess lubricating oil from the cylinder walls during the piston's downstroke, preventing it from entering the combustion chamber.

All Options

A

oil scraper ring (Correct Answer)

B

compression ring

C

pressure ring

D

split ring

Detailed Explanation & Context

The bottom-most ring on a piston, typically featuring a tapered or spring-loaded design, is the oil scraper ring. Its function is to scrape excess lubricating oil from the cylinder walls during the piston's downstroke, preventing it from entering the combustion chamber.

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

Practice Full MEK Set 3

Test yourself with 30 interactive questions, live timer, and instant score.

Launch Practice Simulator →

Question Discussion & Notes

0

Have a doubt, memory trick, or exam update? Share your insights with fellow mariners.

Loading mariner discussions...

« Previous Question Next Question »

More Questions in MEK Set 3

View All 30 →

Q1 If cooling water becomes less in a diesel engine the engine will Q2 Diesel engine bearing will get damaged if supply of ___________ is not enough Q3 Speed of diesel engine is adjusted by changing the supply of Q4 While diesel engine is operating ,one of the important pressure to check is ______ Q5 One of the function of lubricating oil in a diesel engine is to reduce Q6 Function of crankcase lubricating oil in a diesel engine is to ____ Q7 The lower most ring on a diesel engine piston is called Q8 For good combustion,the color of the exhaust from diesel engine should be Q9 Ships propeller is fitted to Q10 The type of engine normally used for generators on a ship is ____________