How many earthing pits are requier to disapper the surge current of one lighting arrester.

3 Answers  

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1.what is the difference between transformer differential and busbar differential.2)why we are using 2 slope for trafo diif and 1 slope for busbar diff.3)what is the purpose of metrosil and stabilizing resistor in high impedance relay circuit.4)how metrosil reduce the peak volage.5)what is the funtion of stabilizing resistor

0 Answers  

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What are the protections for HT Motors?

1 Answers   BARC,

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Why is shaft current insulation required on large motors & when should it be checked i.e. before or after assembly?

2 Answers   Aramco,

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Which contains in POLE ASSEMBLY of a 11KV Kirloskar-make SF6 (Model No-FP620A12)? Will u clarify with drawing?

0 Answers   Kirloskar,

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1 hp is equal to how much watt?

0 Answers   Blue Star,

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what is gridrotor resistance starter

0 Answers  

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in 3 phase induction motor resistance value is how much

1 Answers  

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What are the two basic types of transformers?

0 Answers  

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what is STUB protection in tranmission system and switch yard area?

9 Answers   KSEB, Power Grid,

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why compound generator is used in generating station?

2 Answers  

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Explain What will happen when direction of field current is changed (i.e, field excitation is reversed) in the following machines? 1) Alternator 2) Synchronous Motor 3) D.C Generator ( Shunt or Seies ) 4) D.C Motor ( Shunt or Seies )

3 Answers   NTPC, Transco,

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