Answer / mohan kumar

mot only violet glow it has.....when there is positive point
corona bluish white sheath or violet appears on conductor
surface but during negative point corona reddish spots will
occur on conductor surface

Why 9KV surge arrester having 7.65KV of MCOV?

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why 120 devided with pole and speed multiplication to determine frequency

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current cyring capacity of .75sqmm copper cable

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in our sub station why we step down firstly 33kv\11kv then 11kv to 430v. can we direct step down 33v to 430.v.

7 Answers  

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what is meant by CT burden = 10 VA?

1 Answers  

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which %age if losses increases when frequency is increased to 25%

4 Answers   Maihar Cement, Siemens,

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What is the difference between Isolator annd Circuit Breaker.

21 Answers   ABB, Lanco, NTPC, Power Grid, RInfra,

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What is meant by turbo alternators?

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I want to calculate how much capacitor we connect to maintain the unity power factor? Is there any formula? Pls give me the answer

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in trains i have seen the terminal which is connected at the top of the train is positive .where is negative ? track? i dont think so

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length of 4 core cable 95mm from substation LV VFD panel to Motor at field approximately 150 meter. Motor stop and power has been isolated from LV MCC ( Substation )to disconnect Motor for services. After Motor completed service propose to reinstall and reconnect Motor Cable, found earth cable sparkling during touching at metal / motor body. Inspect by clamp meter found earth cable have current flow AC 1-2amps and all earth cable at MCC LV also have current flow as same value. why it is happen?

2 Answers  

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List of equipments required foe industrial repair lab.

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