Answer / sital

The single-phase feed makes it possible to use a single overhead line. More overhead lines increase the costs, and restrict the maximum speed of train.
Three phase inverters and related variable frequency drives, may, under certain circumstances, produce large amounts of harmonic distortion in their output, and the efficiency of the inverter-motor combination can be poor.

what is real , reactive and apparani power

1 Answers  

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I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id: vsujith_rajan@yahoo.co.in

3 Answers   RRB,

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what is reactive power ? what its role in transmission lines?

3 Answers   Thermax,

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What do you mean by distribution transformers?

0 Answers  

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how instantanious short circuit current is calculated ? its formula.

0 Answers   Crompton Greaves,

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How to calculate earth flat size for 250 Kva DG and transformer?

8 Answers   Deepak Fertilisers,

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How many types of instrument cables are there?

0 Answers  

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what maximum load will take a aluminum cable of 50mm 4 core.

3 Answers  

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In the formula : Knee point voltage = Burden X alf / class, Please inform what is alf? regards Shashidhar M.R.

2 Answers  

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Why there are some equipment(i.e:TV) that using 2-pin plug instead of three? What happen if there is current leakage? Are we going to get electric shock??

0 Answers   College School Exams Tests,

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What are documents to be required for export of the material?

1 Answers   Siemens,

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hi engineers,if suppose distribution is going to two diff village mistakenly they r interchange the neutral of twowhat happen?

7 Answers   Bhel, L&T,

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