AC Machines Quiz
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Questions and Answers

What is the origin of the name 'synchronous' for synchronous machines?

  • It comes from 'syn' meaning system and 'chronos' meaning frequency
  • It comes from 'syn' meaning symmetrical and 'chronos' meaning rotation
  • It comes from 'syn' meaning synchronized and 'chronos' meaning speed
  • It comes from 'syn' meaning equal and 'chronos' meaning time (correct)

    • What type of AC machine has a field circuit supplied by an external DC source?

  • Synchronous machines (correct)
  • Induction machines
  • Single-phase machines
  • Three-phase machines

    • What determines the mechanical shaft speed of synchronous machines?

  • The induced voltage frequency
  • The DC field winding on the rotor
  • The power system’s line frequency (correct)
  • The AC armature winding on the stator

    • What is the function of the field circuit in synchronous machines?

    <p>To be supplied by an external DC source</p> Signup and view all the answers

    Why are synchronous machines called 'synchronous'?

    <p>Because their mechanical shaft speed is directly related to the power system’s line frequency</p> Signup and view all the answers

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