Answer / guest

25kv AC line normally used, current collector pentograph is
used to collect current then this power transform to a lower
level(voltage) by transformer. now this power is converted to
DC and used to drive DC motors. these DC Motors drive the
train.
25 KV AC supply collected from the Grid and transmitted in the
railway grid along the tracks boosters are arranged at
different section to maintain voltage level.

What is the function of RCBO? What are the different sensitivity ratings & each application?

0 Answers   L&T, Legrand,

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What the purpose of transient fault recoredr in substation

2 Answers   NCC,

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Why C.T secondary s2 done earthing?

4 Answers  

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what is the fuction of electrical transducer in control pannel?

6 Answers  

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What is the function of isolater

4 Answers   Getco, Gland Pharma,

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2 Answers   Jindal,

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whenewher three phase supply is given to induction motors revolving/rotating field is created & rotor rotates.When the three phase supply is given to three phase transformer then revolving,/rotating field is created or not? if not why?

1 Answers  

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Which modulation has higher data rates a.fm b.am c.qam d.qpsk

1 Answers   NTDC,

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how inductance related to number of turns in a choke

3 Answers  

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Why corona takes place?

4 Answers   L&T,

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How one can check the charger of the mobile phone or any other charger .......... that is it working ? if , working is it delivering the required supply which is needed by the battery to charge properly ?

4 Answers  

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A distribution transformer giving afrequency of 200HZ, where it is rated for 50HZ. when it will occure?

2 Answers  

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