What is ISM , certificates issued and validity ?

What is double bottom , what are floors and why lightening holes ?

Starting air line explosion ?

Explain propeller drop , rudder drop ?

Explain alpha lubrication system ?

Explain tappet clearances.what happens if there is no tappet clearance ?

Explain generator 1000hrs overhaul ?

Explain battery room maintenance process ?

What is earthed neutral and insulated neutral ?

Explain principle of induction motor ?

What is a plc(programmable logic controller) ?

Explain limit switches , use of limit switches in the engine room and on the main engine ?

What is the material of a contactor ?

Differentiate between contactor and relays ?

Explain megger , what precautions to take for ir test on alternator ?

Explain star-delta starter ? how the change happens from star to delta ?

Explain cross head engine lubrication ?

Explain exhaust valve working , air pressure , material of construction of the cam & plunger ?

Explain mountings on air receivers ?

Draw lip seal diagram and explanation ?

What is the specialty of the refrigerant valves ?

What is the purpose thermostatic expansion valve and back-pressure valve ?

What is the purpose of vit ?

Explain specific fuel oil calculation(not the formula ?

Draw mechanical seal and name the material with which the rubbing surfaces are made ?

What to do if the boiler alkalinity is increasing ?

What is the working principle of alcap purifier ?

What are orb codes ?

Explain double bottom construction ?

What is the type of sewage valve ?