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EN-IEB.AEN / OE1 / 5

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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 / 5” contains 25 questions across 1 collection.

Learning

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Sample questions and answers

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

If a magnetic controller contactor fails to pick up when the coil voltage is applied to the contactor coil, the cause may be

One correct answer

  • overload
  • misalignment of the affected contactor contacts
  • low spring pressure
  • an open contactor coil✓ Correct answer
Which of the following statements represents an application of a silicon controlled rectifier?

One correct answer

  • To provide DC power for a main propulsion motor.✓ Correct answer
  • For use as a voltage reference diode.
  • For sensing flame in an automated burner.
  • To eliminate power supply hum.
A contactor differs from a relay in that:

One correct answer

  • it operates on a different principle.
  • its contacts can interrupt large motor currents.✓ Correct answer
  • gravity and spring tension open contacts.
  • all of these
A semiconductor is a material with a

One correct answer

  • conductivity higher than a normal conductor
  • conductivity higher than a normal insulator✓ Correct answer
  • high conductivity at low temperatures
  • low conductivity at high temperatures
A semiconductor that decreases in resistance with an increase in temperature is known as a

One correct answer

  • resistor
  • thermistor✓ Correct answer
  • diode
  • thermopile

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