Electrical Machines
Ward Leonard control is provides speed control

  In one direction only.
  Below rated speed.
  Above rated speed.
  In both direction.

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Electrical Machines
Armature reaction in a DC machine

  makes an angle of 90° with the main pole axis.
 is in the same direction as the main poles.
 makes an angle with the main pole axis which is load dependent.
 is in direct opposition to the main poles.

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