DC Motor Basics
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Questions and Answers

What type of current does a DC motor use?

  • Alternating current (AC)
  • Variable current (VC)
  • Direct current (DC) (correct)
  • Indirect current (IC)

    • Where are small DC motors commonly used?

  • Tools, toys, and appliances (correct)
  • Industrial machinery
  • Power plants
  • Automobile engines

    • What is the function of the internal mechanism in a DC motor?

  • To generate an electromagnetic field
  • To periodically change the direction of current (correct)
  • To increase the voltage supply
  • To regulate the speed of the motor

    • What has made replacement of DC motors with AC motors possible in many applications?

    <p>The advent of power electronics</p> Signup and view all the answers

    How is an electromagnetic field generated in a DC motor?

    <p>A coil of wire with a current running through it generates an electromagnetic field aligned with the center of the coil</p> Signup and view all the answers

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