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.

show the single line diagram of star delta starter with single phase preventer

0 Answers  

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I would like to know that the fault curretn at base load and at 10% generation will be same? Fault level of BUS remain same with different generation?

0 Answers  

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what's the meaning of the negative going half cycle in the circuit containing a bulb and a switch in series with a input ac source. i mean what happens in the -ve cycle. the dir. of current changes or any other thing. if dir. changes then why we use fuse in only phase wire.

2 Answers  

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Please mention available current rating for MCB,RCCB,MCCB in the market or any website

1 Answers   ETCO,

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Why Exciter higher ferquency ?

1 Answers   Core Logic,

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what is the full form of KVAR

6 Answers  

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what is the difference between id fans and fd fans

12 Answers   Perkins Thermal Systems,

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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.

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How to the calculating the Reactive power ( kvar )

3 Answers  

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Anybody now how to claculate the Bescom power consumption?

1 Answers  

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I am having a DG set.The 415 V from Generator is step up to 460 v and then the same is used for Induction furnace. before Step up, I am connecting LT load to my factory use. When Induction furnace is in service from DG, when i try to start a motor, the generator is tripped.Please tell me the reason.

3 Answers  

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why we are useing capciter in EB meter?

2 Answers  

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