Answer / abdul hameed

first we need DC current in the rotor second we need AVR this device controlled the the voltage which feeding the rotor.this
method is suitably for brush and brush less generator

Answer / vinod

EXTERNAL DC SOURCE

Answer / siddhu

In an alternator the rotor acts as a field winding it produces rotating flux when excited with dc current by an external dc source when this flux cuts the armature, current is induced in it.

On what factors the generating voltage depends ? Generating voltage are (3.3kV, 6.6KV , 11KV, 13.8kV) Why so ?

5 Answers   Bhel,

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What is phenomenon of electromagnetic induction and how it works?

0 Answers  

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How to reduce power factor correction capacitors failure in an industrial environment with vsd and computers usage in the system

2 Answers   ABB,

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how calculated Transformer losses.

0 Answers  

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What is systematic error?

0 Answers  

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generally the electrical equipments not to be operated at leading power factor, why?

2 Answers  

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What is the automatic voltage regulator with servomotor?

0 Answers   Simbhaoli Sugars,

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For a certain load i need 100kw load ,In that case what rating mccb should i use?

5 Answers  

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how much value of resistance should connect to 15 kw, 6 pole 3 phase slip ring induction motor having RV-240, RA-42.

0 Answers  

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working principle of UPS

15 Answers   Mantri,

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with out name plate details , how to find the metering ct and protection ct.?pls brif explaination about that.

3 Answers   APNPDCL,

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pls tell me function of closing coil of A.C.B.

0 Answers  

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