MEO Class 4 Oral Questions
Marine Electro Technology
- What is the use of 'kvar' meter fitted on the MSB?
- Where auto transformer starter is used on board ships and why?
- Explain star delta starter?
- Why starters are not used for land based installations?
- Any two applications of zener diode on board ships?
- How will you come to know whether a fuse is blown out or not, explain two methods?
- What is meant by intrinsically safe?
- Name any three intrinsically safe equipments on board other than a torch light and lamp?
- Explain the working principle of an explosimeter and reasons for false readings?
- How will you check reverse power and overload relay in the MSB?
- What are the routine maintenance in an alternator?
- How will you confirm a solenoid is working or not?
- What kind of starter could be used for force draught fan for the boiler?
- How to check the insulation resistance of a DC motor?
- How to use a voltmeter for synchronization in the absence of synchroscope and synchronizing lamps?
- How does earth fault detector work?
- Explain the conditions of paralleling alternators?
- Draw the synchronizing method?
- What is he difference between a megger and a multimeter?
- Comment on air circuit breakers?
- What are the safeties provided on Main Switch Board?
- Describe how a self excited generator works?
- What is the function of AVR?
- How will you find out earth fault in the system?
- What is reverse power protection for?
- What is Wheatstone bridge?
- Draw the synchroscope system?
- What do you understand by preferential trip and when they operate?
- Describe AC and DC? Where DC is used on board ships?
- What is induction motor?
- What are star delta windings?
- What is a short circuit?
- What is meant by earth fault?
- What is meant by overload?
- What is single phasing and how it happens?
- What is fuse and how many types of fuses have seen before?
- Why an air compressor is started unloaded?
- What is the difference between ordinary diode and zener diode?
- What is the function of starter and choke in a tube light?
- What is the regular maintenance done on batteries?
- How does salinometer work?
- What will be your action on a blackout a sea?
- How does emergency generator starts on its own?
- What are the cut out provided on the OWS and checks to be done before putting it into operation?
- Draw star, delta 3 phase connections?
- What are the motor safeties, deck crane safeties, and engine room over head safeties to be checked?
- What is relay? How it is different from a magnetic contactor?
- What is ohm's law?
- What is the expression for resistance in terms of length and area of conductor?
- What is sequential starting?
- What is the function of circuit breaker?
- What essentials are supplied from emergency switchboard?
- How will you confirm a minimum insulation resistance reading?
- Describe steering power supply regulations?
- What is Coulomb's law?
- Describe Fleming's left and right hand rule?
- Describe lenz's law?
- What is the difference between electric and magnetic circuit?
- Describe and Draw battery charging method?
- How many types of DC motors are there?
- How many types of AC motors are there?
- What is magnetic hysteresis?
- What is eddy current and how to minimize it?
- How many types of electric circuits are there?
- Describe Kirchoff's laws?
- How many types of battery used on board ships?
- What is the constructional difference between AC and DC generators?
- How to calculate number of poles of a generator?
- What are the causes of zero voltage in a running generator?
- What is the difference between an induction motor and synchronous motor?
- What is the reading of hydrometer reading in full charge and discharge?
- What is meant by transformer and rectifier?
- What is he units for voltage, current, power and resistance?
- Comment on the starting current while using a direct online starter for an induction motor?
- What is reluctance?
General Engineering Knowledge
- What is glide?
- Describe bunkering procedure?
- How the tail shaft sealing arrangement is done?
- What are the measures you will take if the gland packing leaks continuously?
- Why intermediate shaft is given?
- How will you take out the valves of air compressor?
- During dry dock what will you check in seachest valves?
- What are the safeties of air compressor?
- What is Heleshaw pump?
- Define valves and cocks and their functions
- Which valve is suitable for remote controlled operation and why?
- What is rudder drop and jumping clearance?
- Where and why bursting disc is provided in an air compressor?
- What are reasons of lifting up inter stages safety valves in an air compressor?
- How to test compressor safety valve?
- How will you overhaul a globe valve?
- What are the reasons for a sticking gate valve?
- What is the theory of density correction?
- How does quick closing valve function?
- How do you specify pipe sizes?
- How do you select correct current setting for welding?
- What is the common size between different schedules of pipes?
- Where telescopic feeler gauges are used?
- What are the safeties of cargo crane?
- What are the safeties provided on engine room overhead crane?
- Where are wear rings used?
- What is hunting gear?
- Explain welding surface preparation?
- Draw a lip seal and how it works?
- Who will you align a pump and its motor?
- Sketch exhaust bellow?
- What are the testings carried out on steering gear during a drill?
- Mention fresh water generator shell temperature, vacuum, and other parameters?
- What is the significance of stern tube header tank?
- What are the advantages of four ram steering gear?
- Describe checks on fresh water generator during watch?
- What is the significance of greasing steering gear?
- What is reverse osmosis?
- What is purifier and clarifier?
- Discuss purifier operation?
- What are fuel oil testings done on board ships?
- What on board tests are done in lube oil?
- What is the correct procedure to collect lube oil for testing?
- What is the temperature of fuel oil entering and leaving purifier?
- What are the safeties of fresh water generator, steering gear and oily water separator?
- Why purifier overflows?
- What is viscometer?
- What is the function of air compressor unloader?
- What is the function of expansion valve?
- How the unloader works in an ac compressor?
- Why fridge compressor is belt driven?
- How is the temperature of cold rooms maintained?
- What is he difference between air compressor and ac compressor?
- What is critical temperature and pressure?
- What is latent heat?
- What is meant by short cycling in fridge compressor?
- Different types of pumps and where they are used?
- What is the discharge pattern of reciprocating pumps and other pumps?
- What is jumping clearance?
- How many types of steering gear are there?
- Describe arrangement of stern tube?
- How stern tube cooling is done?
- How to take crank shaft deflection?
- Why the suction pressure of refrigeration plant and ac plant are different?
- What is the function of rudder carrier bearing?
- How many types of fresh water generator are there?
- Why centrifugal pump has no relief valve?
- Arrangements for relieving shocks in the steering gear?
- What is bell mouth?
- What is interface of purifier?
- What are swash plate pumps?
- Why is oil coming from the water side of purifier?
- Explain the significance of heat treatment in steels?
- Hosing down procedure for engine room tank top?
- What are the precautions before entering inside an air reservoir?
General Engineering Knowledge
- Why certain back pressure is maintained for purifier?
- What is the use of purifier breaks?
- Explain the functions of purifier centrifugal clutch?
- What are ALCAP purifiers?
- Explain the importance of gravity disc in a purifier?
- How will you manage your air compressor without automatic unloader?
- How will you confirm that air compressor valves are not leaking after overhauling?
- Why oil film is coated on a compressor air filter?
- Effect of air filter mesh size in an air compressor?
- What is the working principle of an air drier?
- Name five non metals used on board ships?
- Routine checks on a fixed foam fire fighting system?
- How many types of steels and brief their carbon contents?
- What is the material of safety valve?
- Define flash point, fire point, viscosity?
- How many types of propeller?
- What will you do if emergency alarm raise?
- What is the function of fire detector?
- What is saturation temperature?
- What is humidity?
- What is the material of cooler tubes?
- What is specific gravity?
- What is vacuum?
- What is meant by critical speed?
- What do you know about 'M' notices?
- What s the function of poker gauge?
- What s the function of lubricating oil?
- What is hydrostatic lubrication?
- What is inerting, purging and gas freeing in inert gas system?
- What are fire man's outfit?
- What is cetane number and calorific value of a fuel?
- How will you buy a boiler?
- What is the formula of stress in longitudinal and circumferential joint?
- Describe boiler starting procedure from cold?
- Why boiler water treatment is required?
- How many types of marine boilers are used on ships?
- What are the tests carried out for a low pressure boiler water?
- What is your action on finding high chloride levels in a boiler?
- What will you do if no water level in the gauge glass?
- How would you blow down a boiler gauge glass?
- What are boiler mountings?
- What will you check while watch on a boiler?
- What is allowable chloride content in boiler water?
- If the steam nozzle of the gauge glass is chocked then how will you confirm water level?
- Why purge a boiler furnace?
- What is superheated steam?
- How many types of boiler safety valve?
- Describe boiler survey procedure?
- How to check alkalinity, acidity, chloride content in boiler?
- Draw the lip clearance of safety valve?
- What is the difference between safety valve and relief valve?
- What is corrosion, erosion, and abrasion?
- Comment on materials of boiler construction?
- Why and how soot blowing is done?
- Describe automatic combustion system in a boiler?
- Why flame failure alarm comes and what will be your action?
- When do you start the boiler circulating water pump?
- How will you know that EGB is leaking and how to arrest the leak?
- How boiler safety valve is set?
- Show the calculation of safety valve area?
- What do you know about economiser?
- Describe setting of safety valve?
- What is steam hammering?
- What is manometer?
- What is steam trap?
- How will you prevent uptake fire?
- What is dry distillation?
- What action o be taken if oil is found in the cascade tank?
- What colour flame indicates efficient or poor combustion?
- What is Ogee ring?
- Where the boiler fusible plugs are used?
- What are the densities of boiler water and seawater?
- What is the diameter of safety valve?
- What is the purpose of blow down ring?
- Is there any arrangement for boiler safety valve draining?