Electrical and Electronics Engineering Machines Quiz
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Questions and Answers

What is the major difference between a BLDC motor and a DC motor?

  • BLDC motor has a physical commutator, while a DC motor has an electronically commutated system
  • BLDC motor does not require torque, while a DC motor relies on torque for operation
  • BLDC motor does not have brushes, while a DC motor uses brushes for commutation (correct)
  • BLDC motor uses brushes for commutation, while a DC motor does not have brushes

    • What powers the permanent magnet of a BLDC motor?

  • Mechanical force through a physical commutator
  • Magnetic field generated by the motor's movement
  • Electrical current through an electronically commutated system (correct)
  • Frictional force from the motor's rotation

    • What is the function of a physical commutator in a DC motor?

  • Controls the speed of the motor
  • Regulates the temperature of the motor
  • Changes the motor phase at the appropriate times for torque production (correct)
  • Generates electrical current to power the motor

    • How does a BLDC motor differ from a synchronous generator?

    <p>BLDC motor is electronically commutated, while a synchronous generator uses a physical commutator</p> Signup and view all the answers

    What characteristic does a BLDC motor share with a DC motor?

    <p>Torque and speed performance</p> Signup and view all the answers

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