Thyristor Drive Drawbacks Quiz
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Questions and Answers

What is an advantage of using thyristors for controlled rectification?

  • Production of electromagnetic interference due to switching action
  • Ability to constitute a firing circuit with digital electronic devices (correct)
  • Higher overload capability compared to M-G set
  • Lower maintenance requirements and compact size

    • What is a drawback of thyristor drives according to the text?

  • Fast response and reliable operation
  • Compact size and low maintenance requirements
  • Ability to adjust supply power factor with synchronous motor
  • Higher ripple content causing motor heating and commutation problems (correct)

    • How can the power factor in the AC supply be kept high under high firing angle operating conditions?

  • By adopting regenerative braking
  • Adding a reactor in the armature circuit
  • By adjusting the field excitation of the synchronous motor in an M-G set system (correct)
  • Using digital electronic devices for gate control

    • What is a potential issue caused by the switching action of thyristors?

    <p>Distortion of the supply voltage and electromagnetic interference</p> Signup and view all the answers

    What characteristic makes thyristorized rectifier circuits suitable for applications involving regenerative braking?

    <p>Ability to change firing instant for inversions</p> Signup and view all the answers

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