Electrical Machines
For a given torque, reducing divertor resistance of a DC series motor

  Increase in speed demanding more armature current.
  Decrease in speed but armature current remains the same.
  Decrease in speed demanding less armature current.
  Increase in speed but armature currnet remains the same.

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Electrical Machines
For a single phase capacitor start induction motor which of the following is valid?

 Direction of rotation cannot be changed.
 Rotation can be changed by interchanging supply terminals.
 None of these.
  Rotation can be changed by reversing main winding terminals.

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