What is meant by RVT and NDR ? expansion and details of it

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plz send me Bhel, Mahagenco, sbi previous exam paper for electrical engineer on my email-id kambali_smita@yahoo.co.in

0 Answers   Bhel,

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how step up transformer step up the voltage and what is the reason behind it?

3 Answers  

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Can we use a Potential Transformer for Auxilliary Power supply( Spring charge Motor, Lighting etc)?

1 Answers  

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We have a 62.5 KVA DG with Leyland engine and kirloskar slipring alternator. We have earthed the neutral, and another earthing for the dg body. is it necessary to isolate the dg foundation with rubber pads?

1 Answers  

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1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

0 Answers   Bhel,

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Is Neutral earthing necessary for single phase system or Genset? if yes or no then why?

1 Answers  

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what should be the minimum rating for using HT Motors?

1 Answers   BSL,

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What happens if the negative to earth voltage is greater than positive to earth voltage in the battery of substation?

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What is the difference between LT & HT Cable

4 Answers   ETA,

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what is RR number Abbreviation energy meter

2 Answers   Trimax,

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The capacity of the transformer is 20/25 MVA, Ratio is 132/11 KV, Vactor group YNyno. and impedance is 10.07%. As per the calculation the secondary current is 1312.2Amps. The maximum fault current the transformer should sustain is 13.030KA. How many times the transformer should sustain the maximum short circuit current of 13.030KA over a period up 1 Year. The transformer is repaired one & 10 Years old.

1 Answers  

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