what is the use of commutator in dc motor if we supply ac ? commutator is used to convert ac to dc.and it is used to arrange the flux in unidirectional in case of dc supply. if we give ac as supply to dc motor what is the use of commutator?

0 Answers  

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hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible

0 Answers   Engineers India, Engineers India Limited,

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Why 11KV/440V distribution supply use for Domestic use?

3 Answers   Essar, Getco, Nissan,

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What it the purpose of parallel phasing transfomers??

4 Answers   ABB, Reliance,

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Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?

1 Answers  

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we have 400kv/6.6kv transformer ,it has total 9 taps on HV side with normal tap on tap no 5.when we took the ratio test we observed that ratio was decreasing from tap 1 to tap 5 and was found increasing from tap 5 to tap 9.What is the reason?if anyone have related document then please send me on the email id ankushbahale@gmail.com......plz plz

1 Answers  

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How can step up and step down process in power transformer

1 Answers   MSETCL Maharashtra State Electricity Transmission Co Ltd,

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sir what is the minimum IR value of 11 KV alternator?

4 Answers   Kirloskar,

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hi if anybody got model questions for cpcl Grade'A' electrical engineer position.send it to my mail please krishkumar22@gmail.com

0 Answers  

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I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?

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how is the magnetic current test is different in delta-star and delta delta transformer.

0 Answers   Bhel,

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What's ND relay & it's functions?

2 Answers  

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