Marine Engineering Practice Questions And Answer-Part4

Here are
some of the questions for oral preparation for your engineer COC examinations.
This article covers the Marine Engineering Practice questions.

These are
the questions that we are covering in this article. Some of the questions have
been taken from social platforms as well.

Marine
Engineering Practice Questions

1)   
Freshwater Generator  Starting
Here you can study more about this: Fresh Water Generator
2)   
A/E Sump Going Down
Reasons
1.      Scrapper ring damage
2.      Purifier overflow
3.      Gudgeon pin clearance
increase          
4.      LO going to rocker arm
leaking in guide shoe
5.      If generator stop then
cooler leaking he said no
There are
two possibilities in this.
1) There
is a leakage in the LO cooler and as the LO pressure is higher than the SW
pressure LO may be wasted and can be confirmed by the SW outlet from the
overboard valve of the Aux eng coolers. There film of LO can be observed
floating in the sea.
2) IF the
Oil scrapper rings are fitted in the opposite direction while assembling piston
or the oil scrapper rings may be damaged or worn out. So LO burning takes
place. As due to faulty oil scrapper rings instead of scrapping to the
crankcase LO is directed towards combustion space. This can be confirmed by the
whitish smoke coming out at the funnel of that exhaust pipe of particular auxiliary engine.
Class 4 Exam
3)   
Boiler starting from
cold
4)   
Why only 1/4 th level
initially filled up while firing boiler?
Simple ,
While the boiler is cold the same 1/4 water level will be expand by volume and
it will take more space inside the boiler drum while its heated up for forming
steam
5)   
Windlass Maintenance
Windlass
Maintenance – Foundation bolts to be checked, Gear oil to be checked, gear oil
to be renewed as per OEM, Brake linings gripping surfaces to be checked and to
be roughened if required.
All the
moving parts to be lubricated .
All the
gears should be inspected.
Electrical-
Motor insulation to be checked at regular interval.
Contactors
and relays of the circuit to be checked.
6)   
 How to insure all unit of A/E sharing equal load
·       
We
will check Exhaust temperature
·       
Fuel
rack
·       
Take
Peak pressure
·       
We
will take peak pressure of all unit and compare it with all and approximately
same. Then all are sharing equal load if someone is more than that unit sharing
more load

area of indicator diagram
divided by length of indicator diagram × spring scale= mean effective pressure.

You Might Like to Read These Posts Too:

Harsha Sharma

I sail with one of the leading shipping companies as engine officer. Loves to brag about the places that i have been too. Love Dogs a lot. Would love to talk to different people out there. Writing is my hobby, and loves to write about what i like. Bikes drives me crazy.

Leave a Reply

Your email address will not be published. Required fields are marked *

Special Topics For You

Read these

Naval Architecture Terminology and Coefficients of... The ship is defined in terms of its size and the shape. This is required to find out it’s characteristics for stability, resistance, power needed to...
What Operational Difficulties are there while Star... There are various types of difficulties that you might face as an engineer while starting an engine. Here we have given some of them.Below we have g...
Internal Combustion Engines Nomenclature, Performa... Know about all the engine performance parameters like IHP, BHP Volumetric Efficiency and also about MCR, astern output etc. These are the basic term...
Marine Sewage Treatment Plants, Regulations and Wo... Get to know about the marine sewage treatment plants working, types and regulations concerning the discharging of sewage in to the sea. The importan...
Marine Engineering Practice Question and Answer- P... This is the third article in this series. We have covered topics like Steam, Liner, Control air, Sea Water Line, Expansion tank, Sump, Spanners, O- ...
Preparing Engine Room Before the Arrival-For Engin... This article will be useful for the engineers, when they are getting the engine room ready for the arrival on the port. Getting engine ready for the...
Marine Engineering Practice Questions and Answers-... This is our second article in the Marine Engineering Practice Series which deals in questions related to the troubleshooting of the ship machinery e...
Marine Main Engine Alarms And Trips Here get to know about all the main engine alarms and Trips that we have for the main engine. Most of the times, this questions is asked by the oral...
error: Content is protected !!