Q.

The speed of a dc shunt motor can be raised above its rated value by 

  • AInserting an additional resistance in the armature circuit 
  • BInserting an additional resistance in the field circuit 
  • CReducing the applied voltage
  • DUsing either of the above methods
Correct Answer : (B)

Inserting an additional resistance in the field circuit 

Hints :

The speed of a dc shunt motor can be raised above its rated value by inserting an additional resistance in the field circuit.

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