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EN-IEB.AEN / OE1 / 4

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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-Manag — EN-IEB.AEN / OE1 / 4” contains 30 questions across 1 collection.

Learning

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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.

A loud buzzing noise in an AC controller is probably caused by

One correct answer

  • poor contact with the overload relay
  • an incorrectly sized heater
  • a broken shading coil✓ Correct answer
  • abnormal starting current
An advantage of DC motors over AC motors is that they

One correct answer

  • are less expensive
  • require less maintenance
  • can be started across the line
  • offer a more effective means of controlling speed✓ Correct answer
If a small electric motor has been submerged in saltwater for a short period of time, you should

One correct answer

  • send it ashore for rewinding
  • rinse it with warm freshwater and bake it dry in an oven✓ Correct answer
  • soak it in a bucket of commercial solvent and bake with internal heat
  • clean it with carbon tetrachloride and blow it out with compressed air
Magnetic controller contacts may become welded together during operation because of

One correct answer

  • excessive magnetic gap
  • low contact pressure✓ Correct answer
  • an open coil
  • excessive ambient temperature
If the line voltage to the controller shown in the illustration is 440 volts, what is applied across the control circuit?

One correct answer

Question illustration
  • 110 volts
  • 220 volts
  • 440 volts✓ Correct answer
  • 660 volts

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