how work the lighting arrestor?

2 Answers  

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What is the difference between neutral and ground?

3 Answers   Cethar Limited, Torrent Power,

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how much GROUND & NEUTRAL VOLT maintain in data center.

0 Answers  

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Draw SLD for a panel has 500A Bus Bar rating, with 4 outgoing, each is 80 A (load current), showing the transformer and capacitor bank rating.

0 Answers   FEWA,

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If current flows through conductor it produce magnetic field only.but if current flows through vaccum both magnetic & electrical field produce why ?

4 Answers   NTPC,

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How to calculate the size of cables (all minium/copper) for a particular load

1 Answers   BSL, Galaxy Power System,

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Why does not AC excitation use in rotor of AC Generator instead of DC excitation?

2 Answers   A2Z Group,

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what is relation of rpm with Power supply? rpm directly Proposational to power ?

2 Answers  

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why we used dc supply for field in dg set

0 Answers   Hindusthan National Glass,

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why dc motor is called constant flux motor?

1 Answers  

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what is post close & pre close of trip circuit supervision relay in circuit breaker control scheme?

2 Answers   ABB, NEK, Power,

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why transmission lines traveled in high voltage?

5 Answers   TATA,

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