What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?

2 Answers  

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What is a LBB protection and why it is used?

2 Answers   Gridco,

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When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number

0 Answers   TATA,

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1.what is the difference between MPCB and MCB ? 2.what is the difference between MPCB and MCCB ?

6 Answers  

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for 8 mva 33/11 kv transformer what will be the setting of differential relay on which it trip & what is the HF setting in this relay

2 Answers  

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if two transformers are placed parallel & both have fault impedance of 50KA will it increase or decrease show example?

0 Answers  

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ac and dc motor advandtage,disadvantage,aplication

2 Answers   Apollo,

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What type of DC motor would you see for a lift?

0 Answers   Ericsson,

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Explain the functioning of diode?

0 Answers  

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what will happen if neutal in AC ckt will get open

3 Answers  

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how did the testing of protection relays done through current injection

0 Answers   Bhel,

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how to calculate single phase motor efficiency ?

0 Answers   Bhel,

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