Electrical Machines
In a synchronous motor torque or load angle δ ------------- with increase in load

 increases
 decreases
None of these
 remains unaffected

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Electrical Machines
Flashing the field of DC generator means

 increasing flux density by adding extra turns of winding.
  neutralising residual magnetism.
  creating residual magnetism by a DC source.
  making the magnetic losses forces parallel.

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