Electrical Machines
Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will

 remains same.
 increase.
 Decrease.d
 none of these.

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Electrical Machines
Flashing of DC generator means

  creation of residual magnetism by a DC source.
None of these
  increasing flux density by providing extra ampere-turns in field.
 neutralization of residual magnetism.

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