ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

MEO Class 4 Oral and Written Questions Part 4

Updated on April 12, 2010

Marine Electro Technology

  1. What is the use of 'kvar' meter fitted on the MSB?
  2. Where auto transformer starter is used on board ships and why?
  3. Explain star delta starter?
  4. Why starters are not used for land based installations?
  5. Any two applications of zener diode on board ships?
  6. How will you come to know whether a fuse is blown out or not, explain two methods?
  7. What is meant by intrinsically safe?
  8. Name any three intrinsically safe equipments on board other than a torch light and lamp?
  9. Explain the working principle of an explosimeter and reasons for false readings?
  10. How will you check reverse power and overload relay in the MSB?
  11. What are the routine maintenance in an alternator?
  12. How will you confirm a solenoid is working or not?
  13. What kind of starter could be used for force draught fan for the boiler?
  14. How to check the insulation resistance of a DC motor?
  15. How to use a voltmeter for synchronization in the absence of synchroscope and synchronizing lamps?
  16. How does earth fault detector work?
  17. Explain the conditions of paralleling alternators?
  18. Draw the synchronizing method?
  19. What is he difference between a megger and a multimeter?
  20. Comment on air circuit breakers?
  21. What are the safeties provided on Main Switch Board?
  22. Describe how a self excited generator works?
  23. What is the function of AVR?
  24. How will you find out earth fault in the system?
  25. What is reverse power protection for?
  26. What is Wheatstone bridge?
  27. Draw the synchroscope system?
  28. What do you understand by preferential trip and when they operate?
  29. Describe AC and DC? Where DC is used on board ships?
  30. What is induction motor?
  31. What are star delta windings?
  32. What is a short circuit?
  33. What is meant by earth fault?
  34. What is meant by overload?
  35. What is single phasing and how it happens?
  36. What is fuse and how many types of fuses have seen before?
  37. Why an air compressor is started unloaded?
  38. What is the difference between ordinary diode and zener diode?
  39. What is the function of starter and choke in a tube light?
  40. What is the regular maintenance done on batteries?
  41. How does salinometer work?
  42. What will be your action on a blackout a sea?
  43. How does emergency generator starts on its own?
  44. What are the cut out provided on the OWS and checks to be done before putting it into operation?
  45. Draw star, delta 3 phase connections?
  46. What are the motor safeties, deck crane safeties, and engine room over head safeties to be checked?
  47. What is relay? How it is different from a magnetic contactor?
  48. What is ohm's law?
  49. What is the expression for resistance in terms of length and area of conductor?
  50. What is sequential starting?
  51. What is the function of circuit breaker?
  52. What essentials are supplied from emergency switchboard?
  53. How will you confirm a minimum insulation resistance reading?
  54. Describe steering power supply regulations?
  55. What is Coulomb's law?
  56. Describe Fleming's left and right hand rule?
  57. Describe lenz's law?
  58. What is the difference between electric and magnetic circuit?
  59. Describe and Draw battery charging method?
  60. How many types of DC motors are there?
  61. How many types of AC motors are there?
  62. What is magnetic hysteresis?
  63. What is eddy current and how to minimize it?
  64. How many types of electric circuits are there?
  65. Describe Kirchoff's laws?
  66. How many types of battery used on board ships?
  67. What is the constructional difference between AC and DC generators?
  68. How to calculate number of poles of a generator?
  69. What are the causes of zero voltage in a running generator?
  70. What is the difference between an induction motor and synchronous motor?
  71. What is the reading of hydrometer reading in full charge and discharge?
  72. What is meant by transformer and rectifier?
  73. What is he units for voltage, current, power and resistance?
  74. Comment on the starting current while using a direct online starter for an induction motor?
  75. What is reluctance?


    0 of 8192 characters used
    Post Comment
    • profile image


      9 years ago



    This website uses cookies

    As a user in the EEA, your approval is needed on a few things. To provide a better website experience, uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

    For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at:

    Show Details
    HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
    LoginThis is necessary to sign in to the HubPages Service.
    Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
    AkismetThis is used to detect comment spam. (Privacy Policy)
    HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
    HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
    Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
    CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
    Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the or domains, for performance and efficiency reasons. (Privacy Policy)
    Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
    Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
    Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
    Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
    Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
    VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
    PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
    Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
    MavenThis supports the Maven widget and search functionality. (Privacy Policy)
    Google AdSenseThis is an ad network. (Privacy Policy)
    Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
    Index ExchangeThis is an ad network. (Privacy Policy)
    SovrnThis is an ad network. (Privacy Policy)
    Facebook AdsThis is an ad network. (Privacy Policy)
    Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
    AppNexusThis is an ad network. (Privacy Policy)
    OpenxThis is an ad network. (Privacy Policy)
    Rubicon ProjectThis is an ad network. (Privacy Policy)
    TripleLiftThis is an ad network. (Privacy Policy)
    Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
    Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
    Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
    Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
    ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
    Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)
    ClickscoThis is a data management platform studying reader behavior (Privacy Policy)