Which of the following windings are necessary in case of all dc machines

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Electrical Engineering XYZ MCQs

Which of the following windings are necessary in case of all DC machines:

  1. Wave winding
  2. Open type winding
  3. Closed winding
  4. Lap winding

Correct answer: 3. Closed winding

Explanation: Closed winding is the winding that is necessary in case of all DC machines.

  • Closed winding refers to a winding in which each coil is completely closed upon itself, forming a complete loop.
  • In DC machines, closed winding is a common feature of armature windings.
  • Closed winding ensures that current flows in a closed loop, providing a continuous path for the magnetic field to interact with the armature conductors.
  • Closed winding is a necessary feature for the operation of all DC machines.

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