Question

In the armature and the field magnet of a generator; the stationary part is the

• A. Rotor
• B. Stator
• C. Power
• D. Excitor

Answer 1

Answer:

B. Stator

• we have to give supply to the field winding and the generated current is taken from armature winding.

•  

  As the ratings of alternators are in kVA and MVA, the current and voltages proeuced will be very large.

•  

  So if the armature winding is placed in rotor, the generated large amount of current need to be collected from the rotating part by using slip rings or carbon brushes. And it is not feasible to do that.

  In Synchronous Machine, the armature winding is provided on Stator and field winding on Rotor which is contrary to other Electrical Machines. In fact there are certain issues due to which we provide armature winding on Stator