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.

Dg daily a check duration

5 Answers   AirIndia,

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What happens if we give the supply to the rotor of induction motor and make its terminal shorted?

2 Answers  

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What is the difference between rated and maximum speed of 3phase induction motor.....? Can the motor speed exceeds the rated speed..?

1 Answers  

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what are the various types of earthing? plz give brief detail of all. also post pictures if u have.

22 Answers   Aster Teleservices, Era Infra Engineering, Micron Electricals,

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How to calculate the 2500 Kva Transformer losses Primary 11KV Secondary 415volts

1 Answers   Laurus,

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Which one hurts more AC or DC Current ?

10 Answers  

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what is the working principle of tube light?

2 Answers  

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sir, in a industry present pf is 0.54 pf 25hp power is there its want improve 0.9 pf. which suitable capacity capacitor is suitable please inform me.

2 Answers  

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in 220/132 substation in place of PT what equipment used & what r the role of that equipment

2 Answers  

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what is skin effect? why is it absentin dc system

22 Answers  

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how the earthing point or earthing is taken for ships and airplanes?

1 Answers  

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In ACS 1000 drive we used 12 pulse convertor.Why dont used 6 pulse or 3 pulse convetor

1 Answers  

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