MEO CLASS IV FUNCTION-4b (MEOL) ORAL QUESTIONS PART-1

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MAIN ENGINE, MAIN ENGINE SHAFTING AND RELATED SYSTEMS

Q. During manoeuvring, how will you know leakage in Air starting valve?

Q. T/C surging. Procedure to follow during departure of main engine?

Q. Purpose of negative cam in distributor?

Q. Fuel injector leaking? What it indicates? Exhaust temperature will be high or low.

Q. What all will check when you take round of main engine only?

Q. Why turbocharger?

Q. Surging and reasons for it

Q. How main engine reversing takes place?

Q. There is alarm of OMD. What actions will you take?

Q. How main engine reversing takes place?

Q. Main difference between LO oil used in crankcase for 2S & 4S

Q. When you are taking indicator card and engine tripped on some mechanical trip what will be maximum pressure?

Q. Stresses acting on 4stroke conrod. Are they any different than 2s conrod stresses?

Q. Different means of reversing . How reversing took place in ur ship?

Q. Draw indicator diagram for leaking fuel injector.

Q. How is firing order for Main engine decided? Why 1-7-2-4-6-3-5 and not 1-2-3-4-5-6-7?

Q.  Importance of flywheel.

Q. Stern tube lubrication and some cross question.

Q. Piston rings, Determine Condition of piston ring w/o removing piston out.

Q. Coolers on ME / AE

Q. Critical Speed

Q. Why chokes are used in engine, types of chokes?

Q. Starting Air Line Safeties

Q. Advance technlogy in Engines?

Q. Types of crank shaft. Welded crank shaft is welded where? AE has which crank shaft?

Q. How do you measure ovality of big end? Why do u measure at those point only?

Q. Why bottom end serrated?

Q. BSFOC calculation (from qty of FO in liters )

Q. Exhaust manifold- How pulse of exhaust gets converted into constant pressure?

Q. Hydraulic exhaust valve and spring loaded old type valves – what are advantages?

Q. Air cooler maintenance

Q. Starting air line safeties

Q. M/E fuel injector diagram operation.

Q. M/E interlocks.

Q. M/E Manoeuvring

Q. M/E – What S denotes in SMC

Q. What if stroke to bore ratio less.

Q. Advantages of super long stroke.

Q. M/E valve timing diagram.

Q. M/E exhaust v/v how it operates. Function of sealing air. What if sealing air not present.

Q. Why exhaust valve don’t fall in liner when spring air not present.

Q. M/E bottom end bearing clearance procedure.

Q. Cross head-why is it there in 2-s and what does it do primarily.

Q. 2-s /4-s difference and difference between there lubrication system

Q. Difference between c-case oil and cylinder oil, oil used for camshaft lub. , cold corrosion.

Q. Piston cooling in 2/s & 4/s, and parameters.

Q. Jacket cooling Parameters.

Q. Cylinder Lubrication in 2/s & 4/s. some cross questions.

Q. Scavenge fire.

Q. Crank case explosion.

Q. Piston oil cooling line in both aux and main.

Q. Safety valve on ME.

Q. Prepare main engine .but while explaining put lots of cross questions – like what if leak in JCW line etc.

Q. Cylinder line lubrication oil properties?

Q. Full shaft arrangement of M/E, how is it connected to propeller, shafts rest on which thing after the engine room?

Q. What is stern tube? where it is? What is the purpose of it?

Q. Valve timing diagram of the loop scvanging and uni flow scvanging?

Q. What is SFOC? How it is calculated?

Q. Liner calibration which tool?

Q. What is the least count and the zero error with reference to micro meter?

Q. Fuel Pump – Jerk type and Bosch type

Q. MEP – How to calculate? Why to calculate?

Q. Tie bolt function and diagram

Q. Types of turbocharger

Q. Main engine is turning on air but not coming on fuel – reasons?

Q. Types of ME bedplate.

Q. 4 stroke engine for propulsion. Show entire arrangement.

Q. Cylinder oil properties for 2 stroke and 4 stroke. TBN value

Q. Crankshaft deflection – How taken? How to draw the graph of Angle vs Deflection? How will you check misalignment is due?

Q. Safeties for crankcase. Function of breather pipe,. Flash point of Lube oil

Q. OMD alarm. What % OMD alarm will get activated?

Q. Reversing of main engine. Lost motion principle

Q. 4 stroke engine for propulsion. Show entire arrangement.

Q. Cylinder oil properties for 2 stroke and 4 stroke. TBN value

Q. How is camshaft & crankshaft connected in M/E? Lubrication arrangement for them

Q. Safeties for crankcase. Function of breather pipe,. Flash point of Lube oil

Q. OMD alarm. What % OMD alarm will get activated?

Q. Reversing of main engine. Lost motion principle

Q. Crankshaft deflection – How taken? How to draw the graph of Angle vs Deflection? How will you check misalignment is due?

Q. Difference between turbochargers of 2 stroke and 4 stroke

Q. ME Safeties

Q. ME LO line diagram including cross head lubrication and piston return lines

Q. How to calculate power? How it’s done on ship? How to calculate power if there’s no cylmate, no digital indicator and no old school stylus!

Q. RT-Flex distributor reversing, how is it done, construction diagram

Q. Draw card & indicator card difference. Then explain Draw Card

Q. What is puncture valve?

Q. Difference between ME & MC engines

Q. Type of fuel pump in your ship and explain?

Q. Why FQS lever is provided ?

Q. ME cooling water test, values and action Singh

Q. Manoeuvring diag. (Asked for block diagram and safeties/ interlocks)

Q. Starting Air Line Explosion – a) What is it? b) Causes c) During manoeuvring starting air v/v leaking how will you identify which one & what will be your action?

Q. Tie Rods: Functions and Pre-Tensioning Method

Q. Fuel V/v Diagram and working

Q. Turbocharger Surging: explain what is it

Q. Main Engine Reversing- lots of cross questions

Q. How propeller torque is achieved?

Q. ME lub oil line diagram, showing all components in line?

Q. Hydrostatic Hydrodynamic Lubrication

Q. Working of VIT? some cross questions

Q. Working of fuel pump?

Q. Reversing of main engine? Lots of cross question? Exhaust v/v cam need not be set to new position? Why?

Q. Draw power card, compression card, Difference between peak pr, compression pr, mean effective pressure

Q. Difference between RTA engine and MAN MC engine

Q. Safety of T/G and how will u check for over speed trip

Q. How lubrication takes place in LMC engine? Crosshead lubrication. How so small pressure is maintaining the oil film?

Q. Stroke to bore ratio of your engine,

Q. How much was SFOC of your ship.

Q. What type of lubricator in Sulzer RT FLEX?

Q. Longitudinal cross-section of bellow of exhaust valve?

Q. Piston clearances.

Q. How reversing of main engine takes place? Draw how air distributor cam rotates in forward and reverse direction? (basically the operating mechanism).

Q. Scavenge Space inspection.

Q. RT Flex lubrication system

Q. Stuffing box.

Q. How reversing is achieved?

Q. Why turbocharger? Can we run main engines without them? How?

Q. All the clearances and why are they given?

Q. Reversing in MC engines

Q. OMD and its principle

Q. Checks to be made while crank case inspection

Q.  Crank case explosion

Q. How to take all ME bearing clearance and what are the normal values of clearances?

Q. Piston crown checks

Q. Piston ring clearances

Q. Piston checks

Q. Cylinder head overhaul

Q. Tappet clearance

Q. Rocker arm maintenance

Q. Fuel pp onboard, type, parts,construction

Q. Main engine interlocks,

Q. Turning gear interlock, how it works?