Answer / prashant

in track electrification actually the power is supplied
from the over head line while the tracksthemselves acts as
the return conductor

Answer / amit rajak

in india we actually uses single conductor for track
electrification. aswell the railway track or track which is
itself a conductor acts as the return conductor.

it has the following advantages.
1).easy handling.
2).smooth control where the train track terminates.
2).low cost aS only single conductor is used.
4).low losses as if there is two or more than
two wire system the overall loss
will be high
5). high efficiency.
6).safe as the risk of breaking of conductor is high

I want to ask that is there any relation between current denesity of copper and material purity. also is ther any standard which defines the standard current denesity of material.

0 Answers  

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How to select a cable size for particular load?

0 Answers   Amit Enterprises, Takasago Engineering, Techno Electric and Engineering,

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We know that, in case if there is a faulty insulation,or sc, the current is bypassed to earth through the earth wire that has low resistance.Actually, what will happen to that current that flows through gnd?In that case,if we come in contact with that faulty appliance, wont that current flow through us as we form a closed path by standing in gnd?Is grounding a safety measure?

3 Answers  

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if i get a drop in my 1st year and the i clear my 2nd year and 3rd year all clear and i dont have any back logs so can i be able to sit in campus selection??

0 Answers  

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how to find total current when kva is 30.4 given ? should we use root 3 (1.732) in the formula?

2 Answers  

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If I want to buy a new Xformer for my plant what are the main parameter will I need to check?

0 Answers  

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What are the operation carried out in thermal power station?

0 Answers  

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what is the difference between the electrical and electroncis

15 Answers   TCS,

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What is the effect on in Zone and out zone fault if Phase side CT is Vk/2<30 mA and Neutral side is CT is Vk/4<30 mA for Transformer REF protection

0 Answers   ABB,

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in a simple IDMT relay we use neutral point of ct for earth fault then what is the requirement of neutral ct and cbct?

0 Answers  

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which type of winding is used for high voltage & low current?

1 Answers   GEB,

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What is mean by vector group? For what purposes we doing vector group test in transformers?

2 Answers  

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