In alternator generally we give DC voltage to field of alternator but field (excitor)produce Ac & converts into DC by rotating rectifier(RR ) then fed to rotor .my question is why we cannot give dc voltage directly to rotor instead of Excitor & RR ?

1 Answers  

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transmisssion type

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What is “pu” in ee?

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Which type of control system is expensive — closed loop or open loop?

1 Answers   GE,

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why only exciting current is shown not primary current in transformer???

0 Answers  

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I am gokul. i finished B.E(EEE). I have 2 years experience in maintenance. But now i have not job, so i am searching. i want any effective courses in Electrical field with related to job and good salary. any one will help to me. please tell?

3 Answers  

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How to set the relay,,??

0 Answers   Megatron Solutions, Nestle,

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Differentiate between ideal and non-ideal voltage sources?

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what happens if the phase sequence of parrlel connected sys will changed & phase displacement

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selection of conductor in different voltage?

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What is the exact formula for one weber of magnetic flux?

0 Answers   Bhel,

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how to calculate transformer load?

0 Answers   Lanco,

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