Answer / prabhakar

We use DC voltage with DC series motor bcoz it can start
with load

Answer / bipin

it is 1-phase...25kv ac, 50Hz. actually traction substations
are there which recieve 3 phase supply and divide these
phases into sections of about 30-40 kms along the line. each
of these sections are completely electrically isolated from
each other by using dead sections.

Answer / kapil

25 kv single phase ac.converters are installed in engine because we need ac also to supply auxiluries like blowers etc.

A 60w bulb & a room heater are connected in series.if 60 w bulb is replaced by 100w then what will be the effect on heater out & why?

6 Answers  

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What are the different power system losses and how can it be eliminated?

0 Answers  

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what is the maximum demand how it is defined

1 Answers  

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How to design constatnt power source with variable current and Voltage.

2 Answers  

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Why corona takes place?

4 Answers   L&T,

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WORKING PRINCIPLE OF HALOGEN LAMP & MEQUERY LAMP

1 Answers  

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what questions are asked in the interview for the post of an electrical maintenance engineer in FMCG companies?

0 Answers  

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can induction motor becomes as a generator. if yes how it is possible. if there is a squirrel cage rotor.

6 Answers  

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Why CT secondary should not left open??????????

2 Answers  

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why we are using the ac supply in domestic purpose, why don't use dc supply.

5 Answers  

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what are different types of alternator and discuss about the methods of cooling

16 Answers   Bhel, Jindal, L&T, Nalco, Vedanta,

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what is ceiling voltage in an exciter?

1 Answers   KEPCO Energy Service Company,

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