Answer / gangadhar

in tractoions dc series and separatly excited moters are
used

Answer / guest

both ac$ dc

Answer / ankit

its single phase ac.. with frequency 50/3 Hz...

You can find it written on any delhi metro track... :)

Answer / varma

AC 25 KV 1 PHASE SUPPLY

Answer / amit

to overcome losses dc is transmitted but in electric locomotive it is converted into ac and feed to induction motor which is controlled by VVVF and EMF injection method

What is the minimum value required for Neutral to Earth in UPS Panels

3 Answers  

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I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

0 Answers   US Electrofused Minerals,

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1)What will be full load current for 1000kva 3 phase generator. 2)What will be full load current for 20Kva 1 phase inverter.

5 Answers  

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if we want to convert the two 12 V DC batteries in parallel for UPS ? what would be the result ? which is better for a UPS , connect two batteries in series or connect them in parallel ?

2 Answers  

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why does spark appears when we swith on the light

1 Answers  

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How can we increase the capacity of exixting capacitor bank??????????????? PLS. Help

1 Answers  

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what is electronic regulator and how we can use that in fans?

3 Answers  

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What is current and voltage?

5 Answers  

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what is 3rd Harmonics? how it is generated in alternator

2 Answers   Aditya Birla,

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what is field flash

4 Answers   Bhel,

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why it is so called as xlpe(cross linked poly ethyline) cable?

0 Answers  

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In an electrical power supply,why if neutral phase of a 3phase supply fail over current occur but if it's single phase supply neutral phase fail low current occur? 

1 Answers  

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