Answer / iamdon

Exitation voltage is the voltage required to establish the
working flux in the air gap.It is DC in nature and applied
across the field winding which is generally placed on the
rotor in the case of alternator.

With the application of exitation voltage, current strats
flowing through short circuited rotor windings,this current
is termed as exitation current.

Alternator works on the principle of magnetic locking
between stator and rotor fields.The exitation provide the
neccessary rotor field,without which alternator would not
convert mechanical energy into electrical energy.

Author:arbelectbit@yahoo.com

Answer / m tashfeen abbasi

excitation used in alternater for armature excite .dc voltage applied for excitation which is excitation voltage ,and current passes throught in armature which is current.

Hello, I am just preparing my self for a university interview and struck on the 11kv ring main unit system network. I just know that ring main unit has total three breakers, fuses and use to supply a power to any load/ building without any interrupt. But i am not be able to visualize the connections, either Ring main unit getting power from two different power sources? or there is always one feeder in complete ring circuit??? I would be highly thanks full of you help me.

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