How to prepare electrical preventive maintenance plan & shedule of machine tools.

2 Answers  

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WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM USED FOR RURAL ELECTRIFICATION?

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Necessity of transformer earthing

1 Answers  

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when motor taking high amp what happen.

4 Answers  

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what is real and reactive power?

2 Answers  

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what is ground fault in ACB?

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What are the advantages of speed control using thyristor?

0 Answers  

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why do mostly prefer to generate and distribute electricity in 3 phase..not in 4 phase or 5 phase.??

5 Answers   BSBK, IOCL, NTPC,

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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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Is there any difference of regulation of transformer, alternator , transmission line, if yes, what is it?

1 Answers  

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What are the major types of Curent Transformers?

2 Answers  

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hi frnds can any one help me ? plz send me placement paper of hpcl of Electrical streem .... plz send ....its urgent . The hpcl test is on 17th feb.

1 Answers  

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