trains run on ac or dc??
if ac or dc what are the advantages and disadvantages?????

Answer Posted / rocky

In addition to this , in AC motors, the 25kv ac supply is
first converted to dc ant then again converted to ac to
have a better speed control as we cannot control speed with
50hz supply.

Is This Answer Correct ?    8 Yes 3 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

1.antenna is passive or active?? add why? 2.diff b/w tch drop & tch block?? 3 diff. b/w sdcch drop & sdcch block??

1686


the industires choose embedded system for their applications because of reverse engg is not possible is the only reason or other reasons are available

1400


What ODU work?

1719


Explain how to calculate the rectangle of conductor of different sizes?

631


how do link aT1 from the 1st BTS to 2nd BTS4?

1634






Explain the approximate cost of the corrosion penetration monitoring system(cpmp)?

570


What is a trducer and trponder?

654


What are minterm and maxterm?

661


What is difference between fixed-bias circuit & self-bias circuit?

552


What is difference between 2 quadrant & 4 quadrant digital dc drive.

2515


Typically, an IA has an external resistor used for A Establishing the output impedance B Setting the voltage gain C Setting the current gain D Interfacing with an instrument

1248


Explain the use of ranging and radar?

539


Explain how to design a software ic using vhdl?

659


sir i need a few nots of electronics component cicuit plz send me some nots

1394


name the institue for l1,l2 tranning

1667