Electrical Machines
Two DC series motors are connected in series and are driving the same mechanical load. If the motors are now connected in parallel the speed will become

 double.
 one fourth.
 4 times.
 half.

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

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

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