Electrical Machines
DC Motor

  dc shunt with armature resistance control.
  dc series motor.
  dc shunt motor with field weakening.
  dc compound motor.

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

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

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Electrical Machines
When the supply terminal of a DC shunt motor are interchanged

 The motor will run much faster in the same direction.
 The motor will stop.
  The motor will run at its normal speed in the same direction as before.
 The direction of rotation will reverse.

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