in india are trains run by DC or AC? if DC , from where it receives negative potential? because pentograph receives singe potential only?

2 Answers   GATE, PSU,

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i want to apper for apgenco or aptransco or related can any one sugest me where can i get previous papers of thouse exams

0 Answers  

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how does a shunt reactor maintains the bus voltage???

0 Answers  

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what should be correct gas pressures to be a 1.5 ac unite

0 Answers   DDK,

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What are dcs and plc?

0 Answers  

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What is the difference between phase, neutral wire and earth cable. if neutral is connected to ground, y we need earthing cable? what difference in hot and cold wire? do neutral wire carry current?

1 Answers  

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please mention the minimum IR value for different voltage systems

6 Answers  

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what to do with nuetral when Generators are running in parrellel

11 Answers   APTransco,

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What is meant by sotf,lbb,power swing,pole discrepency,auto reclose?

1 Answers   Bunge, Electrical, Omega, TCS, TNEB Tamil Nadu Electricity Board,

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What is the d/f b/w MCCB & MCB

6 Answers   ABC, LMN,

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Why do we need interlocking in a HT metering or Ring main unit switchgear?

0 Answers  

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why power factor is important?

6 Answers   Dalkia, MGC,

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