Main engine: All important question asked in meo class IV exam regarding main engine(last two years)

Function 4B

• What is mean effective pressure of diesel engine?
• What is stroke?
• Exhaust temp of one unit is high; what could be the reason?
• How is LO for X head lubrication delivered in (B&W/ SULZER Engines)?
• RPM of Low, Medium and High speed engines?
• Draw and explain Timing diagram of 2-stroke engine?
• What is Cross flow, Loop flow and Uniflow scavenging?
• What is over speed trip and how it works?
• How does the Oil mist detector work?
• How will you test the opening pressure of a crank case relief door?
• How many tie rods will be there? Function of tie rods?
• What is stroke to bore ratio?
• What is turbocharger?Why air is passes through the air cooler?
• How you prepare Main engine in 1 hour notice?
• What is the purpose of cylinder relief valve?
• What is a lantern ring?
• M/E stuffing box components?
• What is the role of the stuffing box?
• What is the difference between stuffing box drain oil and scavenge space drain oil?
• At what speed air break for main engine can be given?
• Causes of water coming out during blow through?
• Why are piston rings changed?
• Why is Fuel timing important?How is checked and adjusted? (engine type based on candidate's experience) 
• How is BHP calculation using indicator diagram done?
• What is MEP and MIP ?What is the difference between the two?
• Why is cylinder head fitted in engines?Are there engines w/o cylinder head?
• Draw 2s timing diagram.
• How to take the liner calibration?
• What will be your action on a vibrating turbocharger?
• How to overhaul a fuel injector?
• What are main engine safety devices?
• What is the difference between SMC and ordinary engine?
• Why do we Blow through' Engines?
• How is T/C RPM measured?
• Is there any difference between A/E and M/E Governors
• 8 Indicator cards why and how are they taken?
• What is Hydrodynamic lubrication?
• What is a rolling contact bearing?
• What is MCR and CSR?
• What is PS? What is its relation to kW?
• What was the specific fuel consumption in your last ship?
• What was the specific Cyl oil consumption?
• How will you decarbonise your main engine?
• Why noises coming from telescopic pipes?
• How oil mist detector works?
• How to remove crankshaft?
• How to take crankshaft deflection?
• How will you take tappet clearance?
• What is the relation between power and rpm of a main diesel engine?
• What will be the power developed by a main engine if it runs in DD?
• What is the relation between the ship's speed and engine power?
• Will the engine develop any power, if it is run when a ship is aground?
• What is the difference between fuel valve opening pressure and fuel injection pressure?
• What is an under slung crankshaft?
• How are connecting rods fitted?
• Do two stroke engines need tappet clearance adjustment?
• How will you know, without opening anything, that an engine is 2S or 4S?
• What are the two strokes in 2S engines called?
• Why does Sulzer use hydraulic jack bolts for main bearings?
• What is the meaning of TBN in lub oils?
• Why is LO of different TBN used for M/E cyl oil and Crankcase oil?
• What are the values of TBN for A/E crankcase oil?
• What is the difference between "heat" and "temperature" ?
• If water is found in crank case lo, what could be the cause?
• How will you check main, big end, thrust and cross head bearing clearances?
• What are the normal clearances obtained?
• What are the causes of sudden over speed of main engine?
• What are the causes of engine power loss?
• What are the causes of speed fluctuation of engine?
• What are the causes of reduced compression pressure?
• What are the causes of knocking?
• What is ignition delay and how to reduce it?
• What will you do for proper atomisation?
• What is the difference between clearance volume and swept volume?