Answer / rakesh kumar

single lay diagram, electrical equipment specification, etc...

Answer / arun kumar

capacitor design

how does calculate loss correction factor in transformer

1 Answers  

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How many current ratings of MCB's are in the market? e.g: 1A, 2A, .......upto.

4 Answers  

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why transformer not used to starter

1 Answers  

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How much duration I can keep open the CT if it is under loading condition(100 Amp load)?

3 Answers   Infosys, NTPC, Suzlon,

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What happen if two protection core (3p) of VT in LAVT are 11kv/root3, 110v/root3 and one protection core (3p) is 11kv/root3, 110v/3

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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Differentiate between induced emf and self inductance?

0 Answers  

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1)What will happen when 240 VDC supply is connected to 240VAC supply(DC supply +ve is connected to phase of AC supply & DC supply is to neutral of AC supply). 2)Also what will happen when 240 VDC supply is connected to 240 VAC supply in reverse polarity as of Sr. No 1.

2 Answers  

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differentiate between remote backup relay and local backup relay?

1 Answers  

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what is mutual induction principle?

6 Answers  

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what is the installation process for lifts

0 Answers   DLF,

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A cylindrical wire is compressed in length by 10%. The percentage decrease in the resistance will be?????

8 Answers  

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