Explain main engine bearing clearances approximate values ?

Explain mechanical seal working with aid of sketch ?

Explain aux engine head overhauling- cross questions regarding stem seals , valve leakage ?

Explain air in refrigeration system: symptoms , rectification , & confirmation ?

Evaluation of compressor efficiency ?

What is d.p test procedure

What are air cooler tubes leaking symptoms , tests for leaking tube identification ?

Explain PV valve ?

What sbt and cbt ? tell the procedure of putting of water in cbt.

How will you do COW ? how will you remove the sludge with dirty crude oil in COW ?

What is ows ? what is odmcs ? what is the need of slop tank ?

What will happen if o2 content goes less than 2 % and how it will affect your ship ?

What is the o2 content which you maintain in the tank ?

What is the need of IG ?

Tell MARPOL annexes , how many chapters are there in annex 1 ?

Tell boiler water tests ? how much should be the alkalinity ?

What will you do if chloride content is more ?

What is boiler water treatment and why do you want to do that ?

Why do you want to do blow down ?

How will you do bottom blow down ?

What is scum blow down and how will you do that ? , tell how scum blow down is happens ?

Explain the procedure of burner cleaning

What are the maintenance needed in the boiler ?

What are the maintenance needed to be done in compressor ?

What is the difference between compressor and an engine ?

What will happen if water enters inside the cylinder ?

What will happen if liner cracks ?

What type of air you will use for blow through of engine ?

What is that important check which you have to do with in 20 mins after starting decarb ?

After finishing the decarb , how will you run the aux eng ?