Electrical Machines
With the increase in speed of DC motor

  Back emf increase but line current falls.
 Both back emf as well as line current fall.
 Back emf falls and line current increase.
 Both back emf as well as line current increase.

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Electrical Machines
DC Motor

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

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