Answer / vipul

Grabels are used for during leakage the oil may be dump to
dranage and it prevents from fire.
to prevent from vegitation (grass).
To avoid step / touch potential.

How to calculate the current capacity of the 3C / 1C Al/Cu power cable???

2 Answers  

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Why do we generate 3 Phase AC Supply? It is possible to generate 4 Phase and 5 Phase explain it?

3 Answers  

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roles of owslaw explain?

3 Answers   BSNL,

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why we r using alternator instead of d.c generator and induction generator

1 Answers  

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how much speed will trawiling current

3 Answers   TCS,

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Pls tell me what is the exact current conducting capacity of copper and aluminium cables?how much capacity of cables need to 90kw induction motor&how?

1 Answers  

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AVR is used for the Voltage regulation of the Generator using the feedback signal by exciting the field winding of the generator.But how the field winding will be excited & using what?

2 Answers   Alstom,

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What are the advantages and disadvantages of closed-loop control system?

1 Answers  

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I hv a question regarding power factor improvement just after transformer. I request you to reply me plzz. thank you sir. My friend has a small unit of fabrication. in his factory the main load is a welding machine, lathe machine, grinding machine. this load is not continuous type. now our electricity board has installed 16 KVA, 11000/433 V transformer for our factory. In the energy meter (trivector meter) at LV side of transformer, i hv seen power factor value of 0.15 only when only 3 KW load was flowing. Further electricity board has suggested to install 4 KVAR capacitor at LV side after energy meter. Now my question is that if we permanantly install and switch on 4 KVAR capacitor after energy meter, during some load on transformer and also without any load on transformer, wht will be the power factor shown in energy meter?i dont want to get any penalty by electricity board, so plz suggest me if i can permanantly install and switch on the 4 kvar capacitor or not at LV side of transformer just after energy meter? Thank you again and awaiting for ur positive reply soon.

9 Answers  

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what is the use of permanent magnet generator in exciter

1 Answers   TATA,

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In transformer how measure the winding temperature ?

5 Answers  

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what are the necessary basic electrical topics to learn for mechanical engineer to deal practical problems.

1 Answers   Honda,

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