Electrical Machines
In DC generator, the electricity produced in armature is

  DC.
  AC.
None of these
  armature is not present in DC generator.

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Electrical Machines
Ward-Leonard system for controlling the speed of a DC motor is used where

 The accuracy in speed control is required.
 The speed in both the direction is required.
 All of above.
 Very fine speed control over the whole range from zero to normal speed is required.

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