IG MARITIMEMade by Seafarers for Seafarers

All international training tests on IG MARITIME are free for every seafarer. Register once to save your progress and prepare for your next voyage without limits!

EN-IEB.AEN / OE2, OE3 / 2

Search this section

Choose a question set and start learning or take an exam.

About this collection

The ANR bank contains many sets with original names and codes, including navigation, safety and equipment topics. Select a module by name or use question search.

“ANR — IEB.AEN-Operational — EN-IEB.AEN / OE2, OE3 / 2” contains 51 questions across 1 collection.

Learning

Learning mode has no timer. After answering, you see feedback and the correct options. You can return to a question and repeat a topic.

Exam

A practice exam lasts up to 60 minutes and includes up to 50 questions from the selected collection. Correct answers and results appear after completion.

Sample questions and answers

These examples come from the published collection. Choose Learning to study questions in sequence, or Exam to check your knowledge.

Which of the following statements concerning the specific gravity of a battery electrolyte is true?

One correct answer

  • The electrolyte becomes less dense when it is cooled.
  • The specific gravity reading is lowered when the electrolyte is heated.✓ Correct answer
  • The most accurate hydrometer reading is obtained immediately after water is added.
  • The temperature does not affect the specific gravity of the electrolyte.
An AC generator produces 60 Hz at 1800 RPM If the generator speed is increased to 1830 RPM, the cycles will

One correct answer

  • remain at 60 Hz
  • increase to 61 Hz✓ Correct answer
  • decrease to 59 Hz
  • increase to 63 Hz
When two AC generators are being paralleled, the breaker should be closed with the synchroscope pointer rotating in the

One correct answer

  • 'slow' direction, just before the 12 o'clock position
  • 'fast' direction, just after the 12 o'clock position
  • 'fast' direction, just before the 12 o'clock position✓ Correct answer
  • 'slow' direction, just after the 12 o'clock position
During the charging process of storage batteries, the charging rooms should be well ventilated because

One correct answer

  • without ventilation excessive gassing will occur
  • highly poisonous gases are released
  • highly explosive gases will otherwise accumulate✓ Correct answer
  • without ventilation the battery will not take a full charge
Kilowatt load is divided between two AC generators operating in parallel by

One correct answer

  • adjusting the governor controls✓ Correct answer
  • varying the excitation voltage
  • increasing both prime mover speeds simultaneously
  • decreasing both prime mover speeds simultaneously

Before you start

Do I need to register to start?

Guest access lasts 23 minutes. Free registration lets you continue without limits, save progress and review mistakes in your account.

What language are the questions in?

Questions and answer options retain the language of the original bank. You can change the interface language separately.

Can I use my result as an official document?

No. This is independent practice. A result does not replace an examination, certificate or knowledge check by an authorised organisation.