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Motor and Mep

Motor and MEP -
*Creep failure
*Caustic embrittlement and in which part of boiler it occurs.
*Different types of arrangements of bed plate.
*How does tie rod keep the 3 parts fixed. Asked to draw and show and asked how is it fixed on top and bottom, whether it pierces bed plate or not.
*How to prevent tie rod from vibrating.
*What is fatigue.
*What is brinnel hardness number and significance.
*Function of wear rings and lantern ring.
* NPSH- draw and explain  all components.
* rocker arm lubrication in 4-s engine.
* Difference between sfoc and specific cylinder oil consumption. Also asked the values on my ship.
* What type of engine, did not ask specs.
* Types of cylinder oil lubricators, functioning and what type on my ship.
* What is load dependent lubrication.
*How to purify control air on board.(removal of all impurities) after receiver.
Once i said dehumidifier, he asked functioning of dehumidifier.

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