sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan

0 Answers   IOCL,

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I have connected 04nos. earthings to a transformer through 04nos. earthing pits seperately. 02nos. earthings are connected to T/F body, and 02nos. earthings are connected to T/F neutral.T/F capacity is 2000KVA, 11KV/415V. But after completing of 02 years successful operation ,we are facing following problems- 1. CT/PT occured blast one time 2. HT cable box occured blast two times 3. One body earthing strip and one neutral earthing strip of transformer are overlapping at some places. Whenever these two strips are pressed at overlapped points, they made spark. What is the reason of spark? Please explain the reason & rectification of above problems

5 Answers  

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What is Load commutation and how it is done?Cite some example where this type of commutation is used

2 Answers   NTPC,

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why -48 volts dc used in telecommucation

0 Answers  

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what is meant by star/delta voltages as 440/220 in a 3 phase induction motor, and why it should be connected on STAR IN 3 PHASE SUPPLY

0 Answers   L&T,

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How we calculate the current carrying capacity of H.T. cabel?

0 Answers   Bhel,

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A 3 phase motor, 440 voltage, induction motor. If we take out rotor from motor and if we give supply 440 volt to stator then what happens?????

20 Answers  

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how to connect generators in parallel and what are the required equipment to do so?

2 Answers   MSEB,

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What are the effects of electrical faults?

0 Answers  

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what you mean by current? what you mean by voltage? what is difference between star and delta connection in motor side?

2 Answers   Adani,

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why the value of k is more in shell typr transformers?

0 Answers  

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What are the advantages of the three-phase motor over single phase motor?

0 Answers  

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