Answer Posted / 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.

how to select size of hardware for linking aluminium busbar is it depend on area of busbar or current flowing through bus bar

1997

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What is the difference between cylindrical-type and sandwich-type winding?

1438

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if any body have question paper of railway (section engineering),then plz send me .i will thank of him/her.

1982

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Why do we use copper cable for HT Supply and why not Aluminium?

1996

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1750

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in india per day how much power is generated including all power station

1925

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1967

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2170

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can anyone please help me to find the rupturing or breaking capacity in KA of circuit breaker (MCCB,VCB,ACB etc) of HT and LT side of a distribution transformer...please help with detailed step by step answer...thank you

1985

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2156

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how to select rating of HT Panel

1430

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what is physical distance of isolator to VCB in 33/11kv sub stations

2121

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Define active filter?

1004

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how to find the Motor,s insulation Power?

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1115

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