OIC-EW MARINA REVIEWER / QUIZ COMPETENCE 7 – PART 4

COMPETENCE 7 – Maintenance and Repair of Electronics and Electrical Equipment

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QUIZ START

#1. How are the line losses in a distribution circuit kept to a minimum?

Incorrect!

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#2. How is the output voltage of a 440 volt, 60 hertz, AC generator controlled?

Incorrect!

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#3. How is the speed of the propeller shaft directly coupled to an AC synchronous drive motor changed when powered by either a dedicated or integrated constant frequency alternator in an AC diesel-electric drive system?

Incorrect!

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#4. How will a molded-case circuit breaker with a thermal trip unit react immediately after it has tripped, as a result of an overloaded motor circuit?

Incorrect!

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#5. How many possible states does a binary logic circuit have?

Incorrect!

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#6. How is the rated temperature rise of an electric motor defined?

Incorrect!

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#7. How many cells are within a twelve volt lead acid battery?

Incorrect!

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#8. How is the full-load (rated) torque of an induction motor defined?

Incorrect!

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#9. How are the field windings of a DC shunt generator connected?

Incorrect!

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#10. How are the number of cycles per second developed by the alternator aboard your vessel determined?

Incorrect!

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#11. How would a DC ammeter designed to directly measure current be connected?

Incorrect!

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#12. How will the value of the output frequency change if the load is removed from a turbo generator having a governor speed droop setting of 3%?

Incorrect!

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#13. How should the shunt of a DC ammeter be connected?

Incorrect!

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#14. How is the frequency output of an operating alternator controlled?

Incorrect!

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#15. How is the power factor of an AC generator operating singularly determined?

Incorrect!

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Finish

There are 15 questions for the actual examination for Competence 7 for OIC-EW with a passing rate of 70%. This means that you are only allowed to make 4 mistakes.

DISCLAIMER

The questionnaires contained in this “reviewer” are extracted from the post released by MARINA on their official website and other review materials. Please note that Seaman Kowts is not affiliated with, endorsed by, or connected to the official website of MARINA. The information provided on this website is for general informational and educational purposes only and should not be relied upon as official or authoritative. If you require official information or services, please visit the official website or any relevant review center. We do not assume any responsibility or liability for any consequences resulting from the use of information or services provided on this website.

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