How to calculate Earth busbar size & what is the procedure we make for determine that?

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Can u explain : what is supply for train (whether a,c or d.c ).I know that supply is 25000v a.c .But there is rumour that supply is D.C. And also explain how lights and fans inside the trains are working ,and what type of motors are used in trains whether D.C motors or induction motors .If d.c motor, how it gets supply.If traction motors are used then what are traction motors and its functions and how it differs from other motors and also explain about locomotive . y d.c series motor in train.train wheels r driven by D.C shunt motor ,at what voltage,and at what speed. please reply..............

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how to calculate the phase diffrence beetween given two equetion  y= 15sin(wt+pi/3) and y=10sin(wt-pi/4)

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what is the diff between mcb and vcb

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what happen if generator of micro hydro running at only a small percentage of its capacity, as a comparison, if the diesel generator that runs on only a fraction of its capacity there will be a wet stacking

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how to calculate the cable size

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What is VCB? Where it is installed?

11 Answers   Hyundai,

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How can you measure the signal from the PT100 sensor?

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how to select cable size for three phase?

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What is minimum phase system?

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Explain how Hormonics will effect the Electrical System?

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Why 50hz and 60hz frequencies are used by the world, why they are not taking 55hz?

3 Answers  

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