Electrical Machines
In speed control of DC Series motor, speed lower than the rated speed can be obtained by

 Connecting an additional resistance in the field circuit.
 Any of the above.
 Connecting an additional resistance in the armature circuit.
 Connecting an additional resistance in stator circuit.

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Electrical Machines
In a step down transformer which one of the following statements is true?

 Secondary current is less than primary current.
 Secondary power is less than primary power.
  Number of secondary turns is less than primary turns.
 Number of secondary turns is more than that of primary.

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