ETO ORAL QUESTIONS | FREQUENTLY ASKED | FROM 2018-20 | ETO COC | PART 2

Eto ORAL questions asked in Chennai MMD, Mumbai MMD, Kochin MMD, and Kolkata MMD
(ignore the grammar mistake)

• How will you enter duct keel
• How will you extinguish the fire in a container?
• How will you identify a PCB and what all components are fitted and how will you identify it and working of all semiconductor components
• How will you know that the flame sensor is faulty?
• How will you order cable?
• How will you reset the system after you tried the level alarm?
• How will you work on any high voltage equipment?
• How would you install a new pressure switch in hydrophore?
• How would you test the main LO standby pump in case running p/p failures and what r the condition standby p/p will take over
• How you decide to use DOL, Star delta and auto transformer when installing new equipment.
• How you will connect the synchronous condenser to MSB and how it will help to improve the power factor?
• How you will extinguish the fire in between containers on deck.
• How you will get Vrms equal to Vm/root 2
• How you will increase the insulation of cargo pumps if it’s an emergency and you need to improve the insulation in order to discharge.
• How you will release CO2.
• How Zener diode working what is break down voltage in Zener diode
• Hydric locking alarm
• Hydrophore p/p is cut in cut off what is the reasons
• Hyper mist and co2
• Hyper mist system, how it works, how it extinguishes the fire, how activate, the protection given where
• ICCP draw and explain
• ICCP? (Why we using zinc as ref electrode)
• IF - a narrow amplifier which having very high gain i.e. 60 to 70 MHz
• If 2 gen is running and one v is 440v other is 410v.   What u will check other than AVR?      If 9 terminals in motor what for 9 terminals?
• If any motor comes to ship what is your job on that
• if bow thruster use to take on the load at 3 generators but now we want to take on the load at 2 generators which have sufficient load capacity then will bow thruster come load at 2 generators if yes then how?
• If connected in the Zener diode series what will happen?
• If earth fault in 24 v DC what you will do? Can you use Megger for rectifying the earth's fault?
• If in your motor inside seawater gone, how will rectify?
• If the steering gear system is not working, what could be the possible reason?
• If the Synchro scope is malfunctioning, which instrument is most essential to parallel an alternator with the bus bar?
• If there is a fire in the CO2 room how will you fight?
• If there is no STP on-board can we discharge sewage?
• If we have 300 ton AC and it is not working, the company send 500 ton AC. How you run the compressor?
• If you hear the 220V low insulation alarm what is your action?
• If your synchroscope is not working how you will parallel the Generator?
• IG alarms and trips.
• IG requirements
• IG System detailed explanation.
• IGBT
• IGBT and SCR (VFD and soft starter)
• IGBT symbol and explain, MOSFET feature.
• IGG not firing also no alarm on the control panel, what is your action.
• IMDG class
• IMDG codes.
• IMDG purpose, Classes, UN and PSN
• IMDG volumes, UN number, how many books, classes, and some cross questions
• In MOSFET and transistor which is a voltage device which is current device?
• In ODME which data record
• In reefer, high discharge trip again and again why?
• In reefer, what are the causes of air ingress in the system?
• In the RLC circuit when will get maxim current.
• In sea passage, if you get 440v low insulation alarm what will be your action.
• In solenoid coil, D. C. current is there or A. C. current
• In ST. Gear PID sequence.
• In the UMS ship before departure, what will check as an ETO?
• Incinerator and boiler flame eye is there any difference?
• Induction motor principle
• Infrared and UV flame detectors
• Input-Output signals in PLC
• Insulation class and temperature
• Insulation class?
• International Shore coupling dimensions
• Ionization type of fire detector.
• IOPP issued by
• IP and what is it based on?
• IR Flame sensor, in detail.
• Is synchronous motor self-starting?
• ISM DOC and SOC
• ISPS (SOLAS chapter 11-2)
• ISPS drill frequency
• ISPS, procedure, plan, etc.?
• Jacket water control system
• Latest regulation regarding garbage disposal
• Lifeboat launching procedure
• Lifeboat SOLAS regulations. Safeties and how to launch lifeboat and checks to be carried out before launch and so many cross questions till not satisfied.
• Life raft
• Life throwing apparatus
• Lifeboat safeties
• List all the components illustrated in it
• List of MARPOL equipment in your ship
• List of navigational equipment’s
• List the possible causes.
• LRIT.
• Lub oil pump running and can't stop the main engine you want to test the other pump working or not? The answer is not the pressure switch.
• M/E after stand by, 2/E says to you check the M/E and everything good or not? And how u know.
• M/E LO cooler block and explain
• Magnetron changing procedure
• Main air compressor diagram, unloader, and safeties
• Main air compressor starter diagram, functions of pressure switches, setting, priority selection pressure switches
• Main engine safeties.
• Main engine starting air system automation and control system.
• Main engine tacho system how it works
• Main engine trips in LOLP how the trip is executed electrically.
• Maintenance on alkaline batteries
• Maintenance on gyro
• Manual testing of Reverse power relay
• MARPOL all annex from 1 to 6
• MARPOL Annex 6 equipment’s
• MARPOL Annex 6? What other pollutants except  SOX, NOX??
• MARPOL how will u pump out bilges and regulations?
• Master-slave control
• ME alarms & trips with value
• ME ENGINE
• ME Governor Controller
• ME piston ring calibration
• Meaning of expansion valve in AC.
• MGPS + cross questions
• MLC CERTIFICATES
• MLC regulation, when it comes in Regulation, and why the need of MLC
• Monthly routine of DCP.
• Motor enclosures
• Motor taking 100A full load current then. Tell the starting current of the motor
• Motor terminal identification
• MOU?
• MSB fire. What u will do?
• MSB safety                        
• MSB safety check in front of the surveyor on board.
• MSW motor is immersed in seawater, what is your action and cross-questions.
• Multi-Gas Detector
• Name Ozone Depleting substance which is having ODP value one.
• Navigation light comes under which SOLAS regulation
• Navigational light circuit and if the main bulb fused, state of standby bulb
• Need of Loadicator
• NER value calculation
• NOX tier 2 and tier 3
• OCM working
• ODMCS principle operation in details. Cross questions.
• ODMCS requirements and discharging criteria.
• OFF delay timer
• Oil record book entries
• Oily water separator is running for 4 hours but oiler came to u and said bilge tank level is rising. What can be the reason!?
• OMD purpose and testing procedure what is flashpoint and y it is important
• OMD sensor
• ON delay and OFF delay timer symbols
• On the ship, which place you will get more earth faults?
• On UMS ships what all other alarms etc.
• One dark two bright lamp method?
• One of motor man or engineer said one seawater pipeline is leaking and falling on motor .what is your Acton
• One portable co2 extinguisher is placed near MSB to fight the fire on it.
• Operating range of aux. /main S/G & time
• OWS discharge criteria
• OWS purpose and testing procedure
• OWS types and working
• OWS working principle and testing procedure.
• Oxygen analyzer working and how to calibrate
• Parametric movement of the container
• Performance of fire fighting equipment?
• PID tuning
• PID working and concerned equipment on-board?
• Piercing applicator for container fire fighting
• Piezoelectric effect
• PLC battery change procedure?
• PLC controller explains in brief.
• Pneumatic control by Flapper and Nozzle method.
• PNP and NPN
• Portable fire extinguishers, weight, SOLAS regulations, maintenance, etc.?
• Power generation
• Precautions while loading IMDG cargo
• Preferential trip explain with diagram?
• Preferential trip method of overcurrent protection?
• Preferential Trip relay explain
• Pressure drop test for compressors?
• Pressure sensor type and calibration.
• PRESSURE SETTING FOR MARVS
• Primary and secondary winding in the lightning transformer
• Procedure for changing the fire sensor
• Procedure to work on the radar?
• Proportionate valve and IP converter
• Proximity sensor how it works?
• Proximity sensor, working, where it is used. Difference between proximity and limit switch.
• PSC preparedness by ETO
• PT 100 working range and zero calibration? fish room/meat r00m temp sensor calibration.
• Pump room safeties and timing for light after you switch on the fan
• Purpose of Torsion box in a container ship
• Radar and its possible faults and troubleshooting magnetron changing procedure
• Radar block diagram and frequencies of VHF and Doppler’s log
• Radar frequencies. And Working.
• Radar maintenance.
• Read switch testing.
• Read the drawing of a motor which is having sequential starting
• Reefer container alarm/ Trips & operation.
• Reefer containers, working, power ratings, generator capacity of the ship.
• Reefer gas charging procedure & Gas recovery
• Reefer- refrigeration cycle, gas charging, and recovery
• Refer cable of regulation
• Refrigeration charging processor and how it recover?
• Refrigeration plant in detail.
• Regulation for ballast water management
• Regulation for steering gear motor
• Regulation for steering gear?
• Reliquefaction plant
• Return path of current in 3 phase
• Reverse power relay working
• RTD
• Rudder not responding for autopilot command. Necessary actions
• Safe container conventions, total no of the annexe, and explain (date of enforcement)
• Safeties of co2 system
• Safeties of compressor room and motor room
• Safeties of the deck and engine crane and precautions
• Safety convention follows on the ship.
• Safety devises on-board to detect the presence of h2s?
• Safety inside the boiler furnace?
• Safety Management Certificate
• Safety of IG, type of Radar used for tank gauging and how is the signal transmitted?
• Safety precautions for working on H.V. equipment.
• Saturday routine how to check hyper mist and flame sensor
• SCADA? Difference between SCADA and PLC? Uses?
• SCBA pre-check.
• SCBA, safety checks, Pressure, Whistle timing and at what pressure it starts whistling
• Second Engineer tells you one motor is not starting and what are the reasons and how would you check?
• SEEMP and role of ETO in it.
• Sensors fitted in on-board
• Sequential starting of motor - which motor will start first after blackout?
• Setting of Reverse power relay what and explain why it is this?
• SF6 breaker content
• Shaft earthing and why we need and used to preventing what. And Cross questions.
• Ship's construction
• Short circuit in single-phase how?
• Short circuit Vs earth fault?
• Sine waveform for voltage current and power for one cycle.
• Single phasing-what happens in the delta and star-connected motors.
• Skin effect
• Slip in induction motor
• Smoke detection system and how it works.
• Smoke detection system for cargo hold
• Soft starter (cross-questions) SCR working& its layer
• Soft starter circuit diagram and cross-questions
• SOLAS chapter 11.2 and instruments on board related to it.
• SOLAS chapter 12 in detail & cargo hold safeties in the bulk carrier.
• SOLAS chapter 12 WIDAS, Loadicator, co2, smoke detection system
• SOLAS chapter 14
• SOLAS chapter 9
• SOLAS Chapter name and explain chapter 12
• SOLAS chapter number, the name for the bulk carrier regulations and what the chapter says.
• SOLAS full form, all chapters include Chapter-II -1 Part D in details + Regulation 44
• SOLAS regulations for bulk career
• SOLAS regulations for the sprinkler system and on board where it uses
• SOLAS related to the electrical system.
• SOLAS requirement of the steering system. Type of steering motor. What is the difference in steering motors and other motors? Safety alarms. Hydraulic lock. What is 100% redundancy in the steering?
• SOPEP equipment’s
• Space heater for the motor, where it is fitted in the system
• Special about LPG ship compared to other ships
• Specification of lamps used in cargo clusters
• Speed control of squirrel cage induction motor electrically and mechanically.
• Speed torque curve of induction motor.
• SSAS block diagram and regulations.
• Stability questions: trim, list, draft.
• Staffing valve in co2
• STAR AND DELTA MOTORS
• Star delta and auto transformer starters.
• Star delta starter cross-question
• Starter routine
• Starter type fire pump
• State the regulation for steering gear
• Steering gear alarms
• Steering gear diagram tracing.
• Steering gear hydraulic lock alarm and how will you rectify it?
• Steering gear hydraulic lock alarm not resetting your actions
• Steering gear hydraulic lock reset?
• Steering gear regulation and safeties in that how auto isolation will work.
• Steering gear safematic. Block explains.
• STEL value for h2s
• STP working principle
• Suction discharge pressure relation with AC/Reefer plant starting stopping?
• Suppose CE told you to check star delta motor what all cold checks you will do (without dismantling the motor)
• Tell about pyrotechnics
• Temperature class and insulation class of motors.
• Temperature sensor
• Temperature sensor calibration
• Tender ship
• Testing of emergency lights weekly from the transition source.
• Testing procedures sprinkler system.
• The induction motor has maximum efficiency at which time?
• The relay which is giving starting signal for an emergency generator.
• This rheostat type voltage regulator.  Anyone know why shunt field is connected in series with rheostat
• Thyristor working.
• Time delay in the fire detection system
• Timer circuit explanation
• Torque speed characteristics
• Toxic gases in enclosed space
• Transformer efficiency
• Transformer parallel operation
• Transformer paralleling cross questions
• Transformers secondary is open will current flow in it
• Transistor as an amplifier
• Trigger, IF, Magnetron?
• True North and other north
• Turbocharger rpm sensor working
• Types of fire sensors?
• Types of heat detectors and working
• Types of insulation class
• Types of materials used for insulation
• Types of motors ac and dc and different type of rotors
• Types of packing for IMDG
• Types of RADAR
• Types of reefers on-board
• Types of timers & their use with drawings.
• UMS checklist procedure
• UN and PSN
• UTI tape
• UV level sensor. Block and explain
• Values of PI and DAR
• Various batteries on-board, VRLA batteries, capacity and charging method, maintenance on batteries,
• VCB rack out procedure
• VCB safeties
• VDR working various inputs
• VFD, speed control of the motor, 
• Viscotherm meter diagram and explanation
• Viscotherm why we use and a motor is running continuously on-board to maintain viscosity where it is located
• Voltage or current is danger to the human body? Current and Voltage values that can cause electrical shock/death to human being and cross-questions
• Water ingress alarm system, sensor locations, purpose, indicator the panel, SOLAS chapter 12?
• Welding machine has step up or step down transformer
• Welding transformer 
• What action u take fire in the galley
• What action you will take in case of an OMD alarm?
• What all checks to be done on cables to find cable is good or bad
• What all frequencies we have to remember from Pulse Radar
• What all gas measuring meter provide on board how will u measure it's working principles.
• What all gases measures in the multi-gas detector
• What all information in capacity plan
• What all information in fire fighting plan
• What all works done on reefer without anyone helping
• What and all conventions applied to the container ship
• What and all extinguishing systems in the galley
• What are active devices and passive devices?
• What are the different alarms in the gas detection system?
• What are frame cargo pump interlocks?
• What are markings on portable fire extinguisher?
• What are the alarms provided in the refrigeration system and what safety provided inside the meet room and fish room
• What is the cause of the defect of PLC?
• What are the classes of garbage?
• What are the components of ICCP?