what is the difference between scaler and vector control in drive and where it is to be used ?

1 Answers   Essar, TCS,

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which oil used in transformer?

5 Answers  

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what is let through energy of mccb

2 Answers  

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What is the difference between harmored cabled and unharmored cables

1 Answers  

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How to calculate the rating of ELCB OR RCCB for an equipment?

2 Answers  

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what is the std. earthing resistance for 440V system or m/c, 33000/440 Volt substation? What is the std.?

2 Answers  

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using in R,Y& B PHASE LTSIDE(415V)ct ratio 4000/5 WITH ENERGYMETR OF 1280 REV./KWH,240V.WHAT WILL BE MF OF METRE.

1 Answers   HCC,

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how many desk top computer can connect to a 25kva 3phase generator?

1 Answers  

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which part of transformer heats up the most and why? windings, core or oil .

3 Answers   Lafarge,

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What is PF? Formula for calculating PF in HT side?

10 Answers   HSL,

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Why we not use the impedance relay in protection of short transmission line ?

4 Answers  

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what is the use of piston rings in the engine used for a generator...........

0 Answers  

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