Electrical Machines
Which of the following generators are used in arc welding?

 cumulative compound generators
 series generators
 differential compound generators
 shunt generators

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

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

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