MEO Class 4B Examinations Oral Question bank for f or Electro technology and Control Engineering In this post I have given the list of the questions that were asked in oral examinations of 4B. In this post I have picked some of the famous questions that were asked in the Electro technology and control engineering oral exams. Answer to these will be published shortly. If you have any suggestions, please drop a reply below.
Oral question bank for MEO Class 4B examinations
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FUNCTION : Electro technology and control engineering 1. What is KVA? 2. What is special about Steering gear Overload safety? 3. Explain the condition for Paralleling of Alternators? 4. What does different position of the synchroscope needle mean; what is the difference between 6 o clock and 12 clock? 5. Why do we close the switch at 11 o'clock and not at 12 o' clock? 6. Why 6. Why is a Megger used for used for insulation test and not a multi meter? 7. What are the safeties on MSB? 8. When does Reverse power flow? 9. What is the harm if reverse power flows? 10. How is the protection against reverse power given? ................................................................................................................................................. ................You Might Also Like to Read: MEO Class 4B Oral Questions For Ship Construction and Stability 11. How do you test reverse power trip? 12. What is the full form of ACB? 13. If you press the ACB Close button on an idle generator what will happen? 14. What is Under-voltage protection? protection? 15. What is the meaning of preferential trip? Why is it provided? 16. What is the purpose of the earth fault indication on the switch board? 17. If you get an earth fault alarm what will you do? 18. What is Direct Current? 19. What is alternating current? 20. What is meant by phase in AC? ................................................................................................................................................. .......... 21. Is there phase in DC? 22. Why is DC not much in use now? 23. Where are you likely to see it used? 24. What does three-phase current mean?
25. What is rms value? 26. What is the meaning of power factor? 27. What is the usual value you see onboard? 28. What is the best value possible? 29. What is the benefit of improving power factor? 30. How can it be improved? ................................................................................................................................................. ......... 31. What is the meaning of saying I and V are in phase? 32. What is the difference between KW, KVA and KVAR? 33. Why are motor ratings given in KW and that of alternator and transformer given in KVA? 34. Where does reactive power go? 35. What is a semi conductor? 36. What is doping? 37. What happens to insulation when temperature rises? 38. What happens to resistance of conductors when temperature rises 39. What is an induction motor? 40. What is "slip"? ................................................................................................................................................. ...... 41. What 41. What is a synchronous motor? motor? 42. Where is it used? 43. How do you use a multimeter? 44. What is an AVO meter? 45. How do you check continuity? 46. What limits the electrical load? 47. What is the voltage used in a meggar? 48. How does current flow during welding? 49. What do we use for f or welding on ships? AC or DC? 50. What is the voltage? ................................................................................................................................................. ...... 51. What is the voltage used for ignition in boilers/incinerators etc.? 52. Why is it different from that for welding? 53. Does current flow through hull during welding? 54. If so why don't you get a shock? 55. What is safe voltage to prevent shock? 56. What is the meaning of earthing in a ship? 57. What is the meaning of Star winding/ Delta winding? 58. Is the ship's alternator Star wound or Delta wound? 59. What is the meaning of ACB, MCCB, NFB? 60. What is a magnetic contactor? Where is it used? ................................................................................................................................................. .......... 61. What is a relay? How is it different from a magnetic contactor? 62. Can you draw a DOL starter circuit? 63. What is the meaning of overload? 64. What is meaning of short circuit? 65. How is protection provided for OL and SC? 66. What is the function of a fuse? 67. What is the normal setting of overload relays? 68. How does a thermal overload relay work?
69. What is single phasing? 70. How can it happen? ................................................................................................................................................. ............. 71. What is the harm caused by this? 72. What protection is provided against this? 73. Why is it necessary that incoming alternator frequency is more than bus bar? 74. What is dark lamp and bright lamp method for synchronizing? How is the connection made? 75. Apart from renewing bearings is there any reason for opening up motors for maintenance? 76. Why is reverse power protection required? 77. Why is this reverse power used instead of reverse current in alternators? 78. What is the meaning of excitation in an alternator? 79. Is the field current in an alternator AC or DC ? 80. Is the field rotating or stationary? ................................................................................................................................................. . 81. How is it supplied? 82. What 82. What is a brush less alternator? alternator? 83. How is the excitation achieved in this? 84. What is the meaning of residual magnetism? 85. Why is an air compressor started unloaded? 86. How is the speed of a 3-phase induction motor varied? 87. How is the direction of rotation varied? 88. How does this cause a rotation to change? 89. How is the speed of a DC motor varied? 90. How is the direction varied? ................................................................................................................................................. ....... 91. What is a diode? 92. What is a zener diode? 93. What is a thyristor? What is an SCR? 94. How does an inverter work? 95. How does a tube light work? 96. What is the function of the starter in a tube light? 97. What is the function of the choke? 98. Where is a slip ring used and where is a commutator used? 99. What is capacitance? 100. Does current flow through a capacitor? capacitor? ................................................................................................................................................. ... 101. What is the unit for capacitance ? 102. What is a neutral? 103. What is the difference between neutral and earth? 104. What is a synchronous condenser? 105. Where and why is it used? 106. If a motor is wound star and you want to change to delta what should you do? 100 If the AVR, is defective, when additional loads come on will the generator be able to take it?
................................................................................................................................................. ............... How do you test, reverse power trip, trip, high current trip, preferential trip? 102. What is residual magnetism? Where is it important? 103. Sometimes, when you change the running direction of a E/R blower (from supply to exhaust) it trips. Why? 104. What is the function of the friction clutch mechanism used in purifiers? 105. What is the regular maintenance done on batteries? 106. What safety precautions need to be taken during maintenance on batteries? 107. Why is special lighting used in battery rooms? 108. What is the voltage available from each cell in a lead acid battery? 109. What is the full battery voltage ? 110. How is this voltage achieved? ................................................................................................................................................. ........... 111. What is the meaning of a normally open contact? 112. How does a Salinometer function? 113. How does the air compressor start and stop automatically? 114. How is the cold room temperature maintained? 115. What is a self-monitoring alarm circuit? 116. Out at sea, if there is a black out during your watch, what action will you take? 117. After a black out the emergency generator comes on; On restoring the main supply we are closing the circuit breaker of the main generator with out bothering about synchronizing. How is this possible? 118. How does the emergency generator start automatically? 119. If all your air bottles are at low pressure and there is a blackout how do you start the generators? 120. What is a shaft generator? 121. Even though the main engine runs at varying speeds, how does the alternator maintain constant frequency? 122. Is the alternator connected star or delta 123. Why is 440 V used for motors and 110/220 V used for lighting? Hope you liked my article.
MEO CLASS 4B Orals Exam Questions, Function 4 Motor In this post we have MEO CLASS 4B ORALS Exam Questions for Function 4. All the questions that are given here were asked to the th e Class 4B aspirants. Now you must mu st be aware about the fact that all the written examof the 4B are now being conducted online called as MEO Class 4B e-Pariksha. You can browse other articles also. At various places hints to the questions are given. Answers to these questions will be shortly published.
Q1 Tell the engine specification, SFOC, lube oil consumption, bore diameter of the ship that you sailed in.
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Q2. Tell me the main engine and auxiliary auxiliary engine lube oil properties and also for cylinder oil. Also tell the TBN value and how to calculate the same. Q3 How you will change boiler to EGB. Why circulating pump kept running, what will happen if not, hydrogen fire, what is primary detonation and secondary. What would be effect from the same? Q4. What seawater pump you had in your previous ship. After dismantling that pump what are all the checks you will carry out. How you will check shaft trueness. Q5. Tell me the configuration of your main engine. You may also like to read: MSC Shipping Line Interview Questions Q6 How it was controlled, means through camshaft or what? Q7 Are you sure camshaft controlled and not moment compensated? control engine had? Q8) What type of exhaust valve control engine Q9) What type of exhaust valve wear protection? safeties like explosion doors, omd, bearing oil Q10 Tell me the Crankcase safeties like temperature indicators,lube indicators,lube oil high temp and low pressure trips. Q11 Type of material in temperature sensors. Q12 Type of moments in that- primary and secondary and explain the same. Q13) Moment compensators for primary, webs, for secondary, separate weights etc. Q14 Vibration dampers types like axial and torsional. Q15 How axial damper works, explain this by the diagram. Also read: Oral question bank for class 4 Q16 Do dampers have any type of speed reducing or increasing arrangements? arrangements? Q17 Drawn power and compression cards.
Q18 Nuts flushed with bulkhead, how to remove. Q19 Name the latest engines that have been manufactures by the Man and Sulzer, explain their features. And what beneeffit we are getting from those. Q20 Tell me about the NOX emission control by the RTFLEX Engines. Q21 Tell me about the Hardening. Q22 Name one material used in Main Engine which is hardened. Q23 What is ignition delay and draw two diagrams showing perfect ignition and with ignition delay. Q24 Purpose of intercooler and jacket water in air compressor. Q25 How you prepare DB tank for Survey, How is survey carried out, what checks done during survey. Hint: Hydraulic and Alarm test. Q26 Cold starting of the boiler after survey till the load. Hint: Tell about the rate of heating. Q27 what is scavenge fire and how stuffing box can lead to it. Q28 What is sacrificial anode, how it works, where fitted? So these were the questions that are asked in the MEO CLASS 4B ORALS Exam Questions for Function 4. 4 . If you have suggestions, then please post them below.
MEO Class 4B Exam Questions and Answer of MEP In this post we have given the list of the questions that were asked in oral examinations of 4B. In this post I have picked some of the famous questions that were asked in the Marine engineering practice oral exams. Answer to these will be published shortly. If you have any suggestions, please drop a reply below.
Oral Question Bank for MEO Class 4B Examinations FUNCTION 3: Marine engineering practice
1. Explain how will you o'haul a fuel injector 2. Explain how you will change gland packing of a pump. 3. What is a SDNR valve ? 4. How do you o'haul a globe valve? 5. How does a gate valve work? 6. If a gate valve is stuck, what could be the reason? 7. How is a job centered on a chuck in a lathe 8. What safety precautions will you take if working on a lathe? 9. What is a reamer? Where is it used? 10. How does a Quick closing valve work? 11. How do you reset a QC valve after operation? 12. Is there any difference between relief valve and safety valve? 13. Explain how will you prepare for Bunkering? 14. How do you set tappet clearance? 15. What are the steps to take after a blackout at sea? 16. How do you pressure test a fuel vale? 17. How will you replace an exhaust valve seat? 18. How do you install a bearing on a shaft? 19. How do you specify pipe size? 20. What do the numbers on bearings mean? 21. What is the common size between different schedules of a pipe? 22. If an A/E does not start what will be your action? 23. Your action if T/C is surging? 24. Why is a Steam trap used in condensate return lines? 25. How is gas cutting done? 26. How many valves are there on a gas-cutting torch? 27. How do you light a gas-cutting torch and adjust the flame? 28. How do you set up a new pipe for welding? 29. What is GPR/GPO/LH electrodes? 30. How do you select the correct current setting for welding? 31. Crank pin bearing clearance 32. Telescopic feeler gauge 33. Piston removal procedure 34. Welding defects? 35. Bridge gauge main brg clearance 36. How does a Stud extractor work? 37. How does a chain block work? 38. What are the safeties on cargo cranes ? 39. What are the safeties on ER crane? c rane? 40. How is the load controlled during lowering? 41. How is the E/R crane load tested? 42. Fuel valve not coming out? 43. Setting exhaust valve timing 44. Pumps o'haul? 45. Type of drill bits? 46. Types of threads? 47. Pipe schedule? 48. Important dimensions of flanges? Types of flanges? 49. Indications of scavenge fire? What action will you take? 50. Where are wear rings used? What is their purpose? .......................................................................................................... .........................................................
51. Boiler gauge glass? Reflex type? Blow through procedure? 52. .ISSA code book? 53. SG hunting gear? 54. Axe blade? How fitted? 55. Load test? 56. SCBA pressure testing 57. Welding surface preparation 58. No water in GG ? What action 59. Flaring tool 60. What is an ermato joint? 61. Why is a copper c opper gasket annealed ? 62. How will you supervise a lub oil Filter cleaning? 63. What precautions have to be taken during cleaning of SW line filters? 64. What is a Dead mans alarm 65. What will be your action if your Reliever appears drunk 66. Your oiler appears drunk. What is your action? 67. Compound gauge? 68. Method of blowing through gauge glass 69. Pump shaft broken? Suggest epairs? 70. What is Gear Back lash? 71. What are different types of gears seen in ship? 72. What is hunting tooth 73. Why is gear oil different others? 74. What are the different types of Taps and Dies? 75. Why do you take Ullages? How do you calculate liquid quantity? 76. What is VRF? 77. What do you check c heck up while opening piston? 78. Q closing valve operation? Why do you shut the valve again before opening? 79. Start airline getting hot - what action? 80. Draw a LS of ball bearing fitted on a shaft. 81. What is a lip seal? Sketch 82. Sketch a mechanical seal. 83. Exhaust bellow sketch? 84. What is a dresser coupling 85. What is Bumping Clearance? How do you measure it? 86. Why is a centrifugal c entrifugal pump started with its discharge valve shut? 87. How will you align a pump to its motor? 88. What checks will you make on a bottom end bearing bolt? 89. How do you measure ovality of a crank pin? 90. How does hydraulic tightening work? 91. Why is the jack turned back a little while slackening? 92. What will you check in UP space inspection? 93. How will you do crankcase inspection? 94. Shipside valve is leaking into E/R. What will you do? Hope you liked my article.
