Answer Posted / saravanan

2.5 sg.mm copper cable rated amps is ,laying in
underground:27amps,laying in free air:24 amps.

How to improve fuel cell in a distribution system?

1937

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I am applying for NTPC examination.Can we please provide previous paper to my mail prasad.chintala108340@gmail.com

2144

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please tell me, how i clear the objective test? when i studied form the one book after i solved the objective ,that time i solved that qes. but if i tried solve objective form the other book then i could not solved these que.

1611

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whether fibre optic cable in high voltage earth conductor is used for protection circuits

1565

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why we have to particulary use ACB for below ratings,even available of MCB,MCCB with that range ?

2877

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What is Faraday's law

1460

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Do u know any one? how to find out in motor rated amps? formula?

1967

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What are the three major categories of error?

1164

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If 22 KV HT line, Current transformer is 25/5 then how to calculate multiplying factor.

1048

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what is the criterion for selecting vector group of Transformers ? i mean how to decide vector group of Generator transformer, substation trasformer and transformer at consumer end

2279

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1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?

2731

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I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

2254

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Is the installation of the filter cloths necessary before spreading the gravels at the transformer yards?

1897

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In radial network the source is fed from 1 end both ends at central

2063

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How to assume answer to electrical questions

1479

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