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

 half.
 4 times.
 one fourth.
 double.

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Electrical Machines
In a DC generator, the armature reaction results in

  magnetization of inter poles.
 magnetization of leading and demagnetization of trailing pole tip.
  demagnetization of leading & magnetization of trailing pole tip.
 demagnetization of centers of poles.

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