DC Generator Functions and Components
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Questions and Answers

What is the function of a DC generator?

  • To store electrical energy
  • To convert electrical energy into mechanical energy
  • To regulate electrical voltage
  • To convert mechanical energy into electrical energy (correct)
  • In a DC generator, what is the role of the commutator?

  • To regulate the electrical output
  • To control the speed of rotation
  • To reverse the direction of current flow (correct)
  • To convert AC to DC
  • What happens if the field winding in a DC generator is open-circuited?

  • The generator will produce no output power (correct)
  • The generator will produce regulated output power
  • The generator will produce excessive output power
  • The generator will reverse the current flow
  • Study Notes

    DC Generator Function

    • The DC generator converts mechanical energy into direct current (DC) electrical energy.

    Commutator Role

    • The commutator serves as a mechanical switch that periodically reverses the current direction in the armature windings, allowing the DC generator to produce a unidirectional output.

    Field Winding Open-Circuit

    • If the field winding in a DC generator is open-circuited, the magnetic field collapses, and the generator stops producing voltage.

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    Description

    Test your knowledge about the function and components of a DC generator with these questions. Learn about the role of the commutator and the consequences of an open-circuited field winding in a DC generator.

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